	FIPS Hydrologic Unit Codes.  Column header "HUC" in Station Reports

Code	Category	Name
----	---------	-------------------------------------
01	Region	New England Region (CT,ME,MA,NH,NY,RI,VT)
0101	Subregion	St. John River Basin (ME)
010100	Accounting Unit	St. John (ME)
01010001	Cataloging Unit	Upper St. John (ME)
01010002	Cataloging Unit	Allagash (ME)
01010003	Cataloging Unit	Fish (ME)
01010004	Cataloging Unit	Aroostook (ME)
01010005	Cataloging Unit	Meduxnekeag (ME)
0102	Subregion	Penobscot River Basin (ME)
010200	Accounting Unit	Penobscot (ME)
01020001	Cataloging Unit	West Branch Penobscot (ME)
01020002	Cataloging Unit	East Branch Penobscot (ME)
01020003	Cataloging Unit	Mattawamkeag (ME)
01020004	Cataloging Unit	Piscataquis (ME)
01020005	Cataloging Unit	Lower Penobscot (ME)
0103	Subregion	Kennebec River Basin (ME)
010300	Accounting Unit	Kennebec (ME)
01030001	Cataloging Unit	Upper Kennebec (ME)
01030002	Cataloging Unit	Dead (ME)
01030003	Cataloging Unit	Lower Kennebec (ME)
0104	Subregion	Androscoggin River Basin (ME,NH)
010400	Accounting Unit	Androscoggin (ME,NH)
01040001	Cataloging Unit	Upper Androscoggin (ME,NH)
01040002	Cataloging Unit	Lower Androscoggin (ME,NH)
0105	Subregion	Maine Coastal (ME)
010500	Accounting Unit	Maine Coastal (ME)
01050001	Cataloging Unit	St. Croix (ME)
01050002	Cataloging Unit	Maine Coastal (ME)
01050003	Cataloging Unit	St. George-Sheepscot (ME)
0106	Subregion	Saco (ME,MA,NH)
010600	Accounting Unit	Saco (ME,MA,NH)
01060001	Cataloging Unit	Presumpscot (ME)
01060002	Cataloging Unit	Saco (ME,NH)
01060003	Cataloging Unit	Piscataqua-Salmon Falls (ME,MA,NH)
0107	Subregion	Merrimack (MA,NH)
010700	Accounting Unit	Merrimack (MA,NH)
01070001	Cataloging Unit	Pemigewasset (NH)
01070002	Cataloging Unit	Merrimack (MA,NH)
01070003	Cataloging Unit	Contoocook (NH)
01070004	Cataloging Unit	Nashua (MA,NH)
01070005	Cataloging Unit	Concord (MA)
0108	Subregion	Connecticut (CT,MA,NH,VT)
010801	Accounting Unit	Upper Connecticut (NH,VT)
01080101	Cataloging Unit	Upper Connecticut (NH,VT)
01080102	Cataloging Unit	Passumpsic (VT)
01080103	Cataloging Unit	Waits (VT)
01080104	Cataloging Unit	Upper Connecticut-Mascoma (NH,VT)
01080105	Cataloging Unit	White (VT)
01080106	Cataloging Unit	Black-Ottauquechee (VT)
01080107	Cataloging Unit	West (VT)
010802	Accounting Unit	Lower Connecticut (CT,MA,NH,VT)
01080201	Cataloging Unit	Middle Connecticut (MA,NH,VT)
01080202	Cataloging Unit	Miller (MA,NH)
01080203	Cataloging Unit	Deerfield (MA,VT)
01080204	Cataloging Unit	Chicopee (MA)
01080205	Cataloging Unit	Lower Connecticut (CT,MA)
01080206	Cataloging Unit	Westfield (CT,MA)
01080207	Cataloging Unit	Farmington (CT,MA)
0109	Subregion	Massachusetts-Rhode Island Coastal (CT,MA,RI)
010900	Accounting Unit	Massachusetts-Rhode Island Coastal (CT,MA,RI)
01090001	Cataloging Unit	Charles (MA)
01090002	Cataloging Unit	Cape Cod (MA,RI)
01090003	Cataloging Unit	Blackstone (MA,RI)
01090004	Cataloging Unit	Narragansett (MA,RI)
01090005	Cataloging Unit	Pawcatuck-Wood (CT,RI)
0110	Subregion	Connecticut Coastal (CT,MA,NY,RI)
011000	Accounting Unit	Connecticut Coastal (CT,MA,NY,RI)
01100001	Cataloging Unit	Quinebaug (CT,MA,RI)
01100002	Cataloging Unit	Shetucket (CT,MA)
01100003	Cataloging Unit	Thames (CT)
01100004	Cataloging Unit	Quinnipiac (CT)
01100005	Cataloging Unit	Housatonic (CT,MA,NY)
01100006	Cataloging Unit	Saugatuck (CT,NY)
01100007	Cataloging Unit	Long Island Sound (CT)
0111	Subregion	St. Francois (VT)
011100	Accounting Unit	St. Francois (VT)
01110000	Cataloging Unit	St. Francois (VT)
02 	Region	Mid Atlantic Region (CT,DE,DC,MD,MA,NJ,NY,PA,VT,VA,WV)
0201	Subregion	Richelieu (NY,VT)
020100	Accounting Unit	Richelieu (NY,VT)
02010001	Cataloging Unit	Lake George (NY,VT)
02010002	Cataloging Unit	Otter (VT)
02010003	Cataloging Unit	Winooski (VT)
02010004	Cataloging Unit	Ausable (NY)
02010005	Cataloging Unit	Lamoille (VT)
02010006	Cataloging Unit	Great Chazy-Saranac (NY)
02010007	Cataloging Unit	Missisquoi (VT)
0202	Subregion	Upper Hudson (MA,NJ,NY,VT)
020200	Accounting Unit	Upper Hudson (MA,NJ,NY,VT)
02020001	Cataloging Unit	Upper Hudson (NY)
02020002	Cataloging Unit	Sacandaga (NY)
02020003	Cataloging Unit	Hudson-Hoosic (MA,NY,VT)
02020004	Cataloging Unit	Mohawk (NY)
02020005	Cataloging Unit	Schoharie (NY)
02020006	Cataloging Unit	Middle Hudson (MA,NY)
02020007	Cataloging Unit	Rondout (NJ,NY)
02020008	Cataloging Unit	Hudson-Wappinger (NY)
0203	Subregion	Lower Hudson-Long Island (CT,NJ,NY)
020301	Accounting Unit	Lower Hudson (CT,NJ,NY)
02030101	Cataloging Unit	Lower Hudson (CT,NJ,NY)
02030102	Cataloging Unit	Bronx (CT,NY)
02030103	Cataloging Unit	Hackensack-Passaic (NJ,NY)
02030104	Cataloging Unit	Sandy Hook-Staten Island (NJ,NY)
02030105	Cataloging Unit	Raritan (NJ)
020302	Accounting Unit	Long Island (NY)
02030201	Cataloging Unit	Northern Long Island (NY)
02030202	Cataloging Unit	Southern Long Island (NY)
0204	Subregion	Delaware (DE,MD,NJ,NY,PA)
020401	Accounting Unit	Upper Delaware (NJ,NY,PA)
02040101	Cataloging Unit	Upper Delaware (NY,PA)
02040102	Cataloging Unit	East Branch Delaware (NY)
02040103	Cataloging Unit	Lackawaxen (PA)
02040104	Cataloging Unit	Middle Delaware-Mongaup-Brodhead (NJ,NY,PA)
02040105	Cataloging Unit	Middle Delaware-Musconetcong (NJ,PA)
02040106	Cataloging Unit	Lehigh (PA)
020402	Accounting Unit	Lower Delaware (DE,MD,NJ,PA)
02040201	Cataloging Unit	Crosswicks-Neshaminy (NJ,PA)
02040202	Cataloging Unit	Lower Delaware (NJ,PA)
02040203	Cataloging Unit	Schuylkill (PA)
02040204	Cataloging Unit	Delaware Bay (DE,NJ)
02040205	Cataloging Unit	Brandywine-Christina (DE,MD,PA)
02040206	Cataloging Unit	Cohansey-Maurice (NJ)
02040207	Cataloging Unit	Broadkill-Smyrna (DE)
020403	Accounting Unit	New Jersey Coastal (NJ)
02040301	Cataloging Unit	Mullica-Toms (NJ)
02040302	Cataloging Unit	Great Egg Harbor (NJ)
0205	Subregion	The Susquehanna River Basin (MD,NY,PA)
020501	Accounting Unit	Upper Susquehanna (NY,PA)
02050101	Cataloging Unit	Upper Susquehanna (NY,PA)
02050102	Cataloging Unit	Chenango (NY)
02050103	Cataloging Unit	Owego-Wappasening (NY,PA)
02050104	Cataloging Unit	Tioga (NY,PA)
02050105	Cataloging Unit	Chemung (NY,PA)
02050106	Cataloging Unit	Upper Susquehanna-Tunkhannock (PA)
02050107	Cataloging Unit	Upper Susquehanna-Lackawanna (PA)
020502	Accounting Unit	West Branch Susquehanna (PA)
02050201	Cataloging Unit	Upper West Branch Susquehanna (PA)
02050202	Cataloging Unit	Sinnemahoning (PA)
02050203	Cataloging Unit	Middle West Branch Susquehanna (PA)
02050204	Cataloging Unit	Bald Eagle (PA)
02050205	Cataloging Unit	Pine (PA)
02050206	Cataloging Unit	Lower West Branch Susquehanna (PA)
020503	Accounting Unit	Lower Susquehanna (MD,PA)
02050301	Cataloging Unit	Lower Susquehanna-Penns (PA)
02050302	Cataloging Unit	Upper Juniata (PA)
02050303	Cataloging Unit	Raystown (PA)
02050304	Cataloging Unit	Lower Juniata (PA)
02050305	Cataloging Unit	Lower Susquehanna-Swatara (PA)
02050306	Cataloging Unit	Lower Susquehanna (MD,PA)
0206	Subregion	Upper Chesapeake (DE,MD,PA,VA)
020600	Accounting Unit	Upper Chesapeake (DE,MD,PA,VA)
02060001	Cataloging Unit	Upper Chesapeake Bay (MD)
02060002	Cataloging Unit	Chester-Sassafras (DE,MD,PA)
02060003	Cataloging Unit	Gunpowder-Patapsco (MD,PA)
02060004	Cataloging Unit	Severn (MD)
02060005	Cataloging Unit	Choptank (DE,MD)
02060006	Cataloging Unit	Patuxent (MD)
02060007	Cataloging Unit	Blackwater-Wicomico (DE,MD)
02060008	Cataloging Unit	Nanticoke (DE,MD)
02060009	Cataloging Unit	Pocomoke (DE,MD,VA)
02060010	Cataloging Unit	Chincoteague (DE,MD,VA)
0207	Subregion	Potomac (DC,MD,PA,VA,WV)
020700	Accounting Unit	Potomac (DC,MD,PA,VA,WV)
02070001	Cataloging Unit	South Branch Potomac (VA,WV)
02070002	Cataloging Unit	North Branch Potomac (MD,PA,WV)
02070003	Cataloging Unit	Cacapon-Town (MD,PA,WV)
02070004	Cataloging Unit	Conococheague-Opequon (MD,PA,VA,WV)
02070005	Cataloging Unit	South Fork Shenandoah (VA)
02070006	Cataloging Unit	North Fork Shenandoah (VA,WV)
02070007	Cataloging Unit	Shenandoah (VA,WV)
02070008	Cataloging Unit	Middle Potomac-Catoctin (DC,MD,VA)
02070009	Cataloging Unit	Monocacy (MD,PA)
02070010	Cataloging Unit	Middle Potomac-Anacostia-Occoquan (DC,MD,VA)
02070011	Cataloging Unit	Lower Potomac (MD,VA)
0208	Subregion	Lower Chesapeake (VA,WV)
020801	Accounting Unit	Lower Chesapeake (VA)
02080101	Cataloging Unit	Lower Chesapeake Bay (VA)
02080102	Cataloging Unit	Great Wicomico-Piankatank (VA)
02080103	Cataloging Unit	Rapidan-Upper Rappahannock (VA)
02080104	Cataloging Unit	Lower Rappahannock (VA)
02080105	Cataloging Unit	Mattaponi (VA)
02080106	Cataloging Unit	Pamunkey (VA)
02080107	Cataloging Unit	York (VA)
02080108	Cataloging Unit	Lynnhaven-Poquoson (VA)
02080109	Cataloging Unit	Western Lower Delmarva (VA)
02080110	Cataloging Unit	Eastern Lower Delmarva (VA)
020802	Accounting Unit	The James River Basin (VA,WV)
02080201	Cataloging Unit	Upper James (VA,WV)
02080202	Cataloging Unit	Maury (VA)
02080203	Cataloging Unit	Middle James-Buffalo (VA)
02080204	Cataloging Unit	Rivanna (VA)
02080205	Cataloging Unit	Middle James-Willis (VA)
02080206	Cataloging Unit	Lower James (VA)
02080207	Cataloging Unit	Appomattox (VA)
02080208	Cataloging Unit	Hampton Roads (VA)
03 	Region	South Atlantic-Gulf Region (AL,FL,GA,LA,MS,NC,SC,TN,VA)
0301	Subregion	Chowan-Roanoke (NC,VA)
030101	Accounting Unit	Roanoke (NC,VA)
03010101	Cataloging Unit	Upper Roanoke (VA)
03010102	Cataloging Unit	Middle Roanoke (NC,VA)
03010103	Cataloging Unit	Upper Dan (NC,VA)
03010104	Cataloging Unit	Lower Dan (NC,VA)
03010105	Cataloging Unit	Banister (VA)
03010106	Cataloging Unit	Roanoke Rapids (NC,VA)
03010107	Cataloging Unit	Lower Roanoke (NC)
030102	Accounting Unit	Albemarle-Chowan (NC,VA)
03010201	Cataloging Unit	Nottoway (NC,VA)
03010202	Cataloging Unit	Blackwater (NC,VA)
03010203	Cataloging Unit	Chowan (NC,VA)
03010204	Cataloging Unit	Meherrin (NC,VA)
03010205	Cataloging Unit	Albemarle (NC,VA)
0302	Subregion	Neuse-Pamlico (NC)
030201	Accounting Unit	Pamlico (NC)
03020101	Cataloging Unit	Upper Tar (NC)
03020102	Cataloging Unit	Fishing (NC)
03020103	Cataloging Unit	Lower Tar (NC)
03020104	Cataloging Unit	Pamlico (NC)
03020105	Cataloging Unit	Pamlico Sound (NC)
03020106	Cataloging Unit	Bogue-Core Sounds (NC)
030202	Accounting Unit	Neuse (NC)
03020201	Cataloging Unit	Upper Neuse (NC)
03020202	Cataloging Unit	Middle Neuse (NC)
03020203	Cataloging Unit	Contentnea (NC)
03020204	Cataloging Unit	Lower Neuse (NC)
0303	Subregion	Cape Fear (NC)
030300	Accounting Unit	Cape Fear (NC)
03030001	Cataloging Unit	New (NC)
03030002	Cataloging Unit	Haw (NC)
03030003	Cataloging Unit	Deep (NC)
03030004	Cataloging Unit	Upper Cape Fear (NC)
03030005	Cataloging Unit	Lower Cape Fear (NC)
03030006	Cataloging Unit	Black (NC)
03030007	Cataloging Unit	Northeast Cape Fear (NC)
0304	Subregion	Pee Dee (NC,SC,VA)
030401	Accounting Unit	Upper Pee Dee (NC,SC,VA)
03040101	Cataloging Unit	Upper Yadkin (NC,VA)
03040102	Cataloging Unit	South Yadkin (NC)
03040103	Cataloging Unit	Lower Yadkin (NC)
03040104	Cataloging Unit	Upper Pee Dee (NC,SC)
03040105	Cataloging Unit	Rocky (NC,SC)
030402	Accounting Unit	Lower Pee Dee (NC,SC)
03040201	Cataloging Unit	Lower Pee Dee (NC,SC)
03040202	Cataloging Unit	Lynches (NC,SC)
03040203	Cataloging Unit	Lumber (NC,SC)
03040204	Cataloging Unit	Little Pee Dee (NC,SC)
03040205	Cataloging Unit	Black (SC)
03040206	Cataloging Unit	Waccamaw (NC,SC)
03040207	Cataloging Unit	Carolina Coastal-Sampit (NC,SC)
0305	Subregion	Edisto-Santee (GA,NC,SC)
030501	Accounting Unit	The Santee River Basin (NC,SC)
03050101	Cataloging Unit	Upper Catawba (NC,SC)
03050102	Cataloging Unit	South Fork Catawba (NC)
03050103	Cataloging Unit	Lower Catawba (NC,SC)
03050104	Cataloging Unit	Wateree (SC)
03050105	Cataloging Unit	Upper Broad (NC,SC)
03050106	Cataloging Unit	Lower Broad (SC)
03050107	Cataloging Unit	Tyger (SC)
03050108	Cataloging Unit	Enoree (SC)
03050109	Cataloging Unit	Saluda (SC)
03050110	Cataloging Unit	Congaree (SC)
03050111	Cataloging Unit	Lake Marion (SC)
03050112	Cataloging Unit	Santee (SC)
030502	Accounting Unit	Edisto-South Carolina Coastal (GA,SC)
03050201	Cataloging Unit	Cooper (SC)
03050202	Cataloging Unit	South Carolina Coastal (SC)
03050203	Cataloging Unit	North Fork Edisto (SC)
03050204	Cataloging Unit	South Fork Edisto (SC)
03050205	Cataloging Unit	Edisto (SC)
03050206	Cataloging Unit	Four Hole Swamp (SC)
03050207	Cataloging Unit	Salkehatchie (SC)
03050208	Cataloging Unit	Broad-St. Helena (GA,SC)
0306	Subregion	Ogeechee-Savannah (GA,NC,SC)
030601	Accounting Unit	The Savannah River Basin (GA,NC,SC)
03060101	Cataloging Unit	Seneca (NC,SC)
03060102	Cataloging Unit	Tugaloo (GA,NC,SC)
03060103	Cataloging Unit	Upper Savannah (GA,SC)
03060104	Cataloging Unit	Broad (GA)
03060105	Cataloging Unit	Little (GA)
03060106	Cataloging Unit	Middle Savannah (GA,SC)
03060107	Cataloging Unit	Stevens (SC)
03060108	Cataloging Unit	Brier (GA)
03060109	Cataloging Unit	Lower Savannah (GA,SC)
030602	Accounting Unit	Ogeechee (GA)
03060201	Cataloging Unit	Upper Ogeechee (GA)
03060202	Cataloging Unit	Lower Ogeechee (GA)
03060203	Cataloging Unit	Canoochee (GA)
03060204	Cataloging Unit	Ogeechee Coastal (GA)
0307	Subregion	Altamaha-St. Marys (FL,GA)
030701	Accounting Unit	The Altamaha River Basin (GA)
03070101	Cataloging Unit	Upper Oconee (GA)
03070102	Cataloging Unit	Lower Oconee (GA)
03070103	Cataloging Unit	Upper Ocmulgee (GA)
03070104	Cataloging Unit	Lower Ocmulgee (GA)
03070105	Cataloging Unit	Little Ocmulgee (GA)
03070106	Cataloging Unit	Altamaha (GA)
03070107	Cataloging Unit	Ohoopee (GA)
030702	Accounting Unit	St. Marys-Satilla (FL,GA)
03070201	Cataloging Unit	Satilla (GA)
03070202	Cataloging Unit	Little Satilla (GA)
03070203	Cataloging Unit	Cumberland-St. Simons (GA)
03070204	Cataloging Unit	St. Marys (FL,GA)
03070205	Cataloging Unit	Nassau (FL)
0308	Subregion	St. Johns (FL)
030801	Accounting Unit	The St. Johns River Basin (FL)
03080101	Cataloging Unit	Upper St. Johns (FL)
03080102	Cataloging Unit	Oklawaha (FL)
03080103	Cataloging Unit	Lower St. Johns (FL)
030802	Accounting Unit	East Florida Coastal (FL)
03080201	Cataloging Unit	Daytona-St. Augustine (FL)
03080202	Cataloging Unit	Cape Canaveral (FL)
03080203	Cataloging Unit	Vero Beach (FL)
0309	Subregion	Southern Florida (FL)
030901	Accounting Unit	The Kissimmee River Basin (FL)
03090101	Cataloging Unit	Kissimmee (FL)
03090102	Cataloging Unit	Northern Okeechobee Inflow (FL)
03090103	Cataloging Unit	Western Okeechobee Inflow (FL)
030902	Accounting Unit	Southern Florida (FL)
03090201	Cataloging Unit	Lake Okeechobee (FL)
03090202	Cataloging Unit	Everglades (FL)
03090203	Cataloging Unit	Florida Bay-Florida Keys (FL)
03090204	Cataloging Unit	Big Cypress Swamp (FL)
03090205	Cataloging Unit	Caloosahatchee (FL)
0310	Subregion	Peace-Tampa Bay (FL)
031001	Accounting Unit	Peace (FL)
03100101	Cataloging Unit	Peace (FL)
03100102	Cataloging Unit	Myakka (FL)
03100103	Cataloging Unit	Charlotte Harbor (FL)
031002	Accounting Unit	Tampa Bay (FL)
03100201	Cataloging Unit	Sarasota Bay (FL)
03100202	Cataloging Unit	Manatee (FL)
03100203	Cataloging Unit	Little Manatee (FL)
03100204	Cataloging Unit	Alafia (FL)
03100205	Cataloging Unit	Hillsborough (FL)
03100206	Cataloging Unit	Tampa Bay (FL)
03100207	Cataloging Unit	Crystal-Pithlachascotee (FL)
03100208	Cataloging Unit	Withlacoochee (FL)
0311	Subregion	Suwannee (FL,GA)
031101	Accounting Unit	Aucilla-Waccasassa (FL,GA)
03110101	Cataloging Unit	Waccasassa (FL)
03110102	Cataloging Unit	Econfina-Steinhatchee (FL)
03110103	Cataloging Unit	Aucilla (FL,GA)
031102	Accounting Unit	The Suwannee River Basin (FL,GA)
03110201	Cataloging Unit	Upper Suwannee (FL,GA)
03110202	Cataloging Unit	Alapaha (FL,GA)
03110203	Cataloging Unit	Withlacoochee (FL,GA)
03110204	Cataloging Unit	Little (GA)
03110205	Cataloging Unit	Lower Suwannee (FL)
03110206	Cataloging Unit	Santa Fe (FL)
0312	Subregion	Ochlockonee (FL,GA)
031200	Accounting Unit	Ochlockonee (FL,GA)
03120001	Cataloging Unit	Apalachee Bay-St. Marks (FL,GA)
03120002	Cataloging Unit	Upper Ochlockonee (GA)
03120003	Cataloging Unit	Lower Ochlockonee (FL,GA)
0313	Subregion	Apalachicola (AL,FL,GA)
031300	Accounting Unit	Apalachicola (AL,FL,GA)
03130001	Cataloging Unit	Upper Chattahoochee (GA)
03130002	Cataloging Unit	Middle Chattahoochee-Lake Harding (AL,GA)
03130003	Cataloging Unit	Middle Chattahoochee-Walter F. George Reservoir (AL,GA)
03130004	Cataloging Unit	Lower Chattahoochee (AL,FL,GA)
03130005	Cataloging Unit	Upper Flint (GA)
03130006	Cataloging Unit	Middle Flint (GA)
03130007	Cataloging Unit	Kinchafoonee-Muckalee (GA)
03130008	Cataloging Unit	Lower Flint (GA)
03130009	Cataloging Unit	Ichawaynochaway (GA)
03130010	Cataloging Unit	Spring (GA)
03130011	Cataloging Unit	Apalachicola (FL,GA)
03130012	Cataloging Unit	Chipola (AL,FL)
03130013	Cataloging Unit	New (FL)
03130014	Cataloging Unit	Apalachicola Bay (FL)
0314	Subregion	Choctawhatchee-Escambia (AL,FL)
031401	Accounting Unit	Florida Panhandle Coastal (AL,FL)
03140101	Cataloging Unit	St. Andrew-St. Joseph Bays (FL)
03140102	Cataloging Unit	Choctawhatchee Bay (FL)
03140103	Cataloging Unit	Yellow (AL,FL)
03140104	Cataloging Unit	Blackwater (AL,FL)
03140105	Cataloging Unit	Pensacola Bay (FL)
03140106	Cataloging Unit	Perdido (AL,FL)
03140107	Cataloging Unit	Perdido Bay (AL,FL)
031402	Accounting Unit	The Choctawhatchee River Basin (AL,FL)
03140201	Cataloging Unit	Upper Choctawhatchee (AL)
03140202	Cataloging Unit	Pea (AL,FL)
03140203	Cataloging Unit	Lower Choctawhatchee (AL,FL)
031403	Accounting Unit	The Escambia River Basin (AL,FL)
03140301	Cataloging Unit	Upper Conecuh (AL)
03140302	Cataloging Unit	Patsaliga (AL)
03140303	Cataloging Unit	Sepulga (AL)
03140304	Cataloging Unit	Lower Conecuh (AL,FL)
03140305	Cataloging Unit	Escambia (AL,FL)
0315	Subregion	The Alabama River Basin (AL,GA,TN)
031501	Accounting Unit	Coosa-Tallapoosa (AL,GA,TN)
03150101	Cataloging Unit	Conasauga (GA,TN)
03150102	Cataloging Unit	Coosawattee (GA)
03150103	Cataloging Unit	Oostanaula (GA)
03150104	Cataloging Unit	Etowah (GA)
03150105	Cataloging Unit	Upper Coosa (AL,GA)
03150106	Cataloging Unit	Middle Coosa (AL)
03150107	Cataloging Unit	Lower Coosa (AL)
03150108	Cataloging Unit	Upper Tallapoosa (AL,GA)
03150109	Cataloging Unit	Middle Tallapoosa (AL)
03150110	Cataloging Unit	Lower Tallapoosa (AL)
031502	Accounting Unit	The Alabama River Basin (AL)
03150201	Cataloging Unit	Upper Alabama (AL)
03150202	Cataloging Unit	Cahaba (AL)
03150203	Cataloging Unit	Middle Alabama (AL)
03150204	Cataloging Unit	Lower Alabama (AL)
0316	Subregion	Mobile-Tombigbee (AL,MS)
031601	Accounting Unit	Black Warrior-Tombigbee (AL,MS)
03160101	Cataloging Unit	Upper Tombigbee (AL,MS)
03160102	Cataloging Unit	Town (MS)
03160103	Cataloging Unit	Buttahatchee (AL,MS)
03160104	Cataloging Unit	Tibbee (MS)
03160105	Cataloging Unit	Luxapallila (AL,MS)
03160106	Cataloging Unit	Middle Tombigbee-Lubbub (AL,MS)
03160107	Cataloging Unit	Sipsey (AL)
03160108	Cataloging Unit	Noxubee (AL,MS)
03160109	Cataloging Unit	Mulberry (AL)
03160110	Cataloging Unit	Sipsey Fork (AL)
03160111	Cataloging Unit	Locust (AL)
03160112	Cataloging Unit	Upper Black Warrior (AL)
03160113	Cataloging Unit	Lower Black Warrior (AL)
031602	Accounting Unit	Mobile Bay-Tombigbee (AL,MS)
03160201	Cataloging Unit	Middle Tombigbee-Chickasaw (AL,MS)
03160202	Cataloging Unit	Sucarnoochee (AL,MS)
03160203	Cataloging Unit	Lower Tombigbee (AL)
03160204	Cataloging Unit	Mobile-Tensaw (AL)
03160205	Cataloging Unit	Mobile Bay (AL)
0317	Subregion	Pascagoula (AL,MS)
031700	Accounting Unit	Pascagoula (AL,MS)
03170001	Cataloging Unit	Chunky-Okatibbee (MS)
03170002	Cataloging Unit	Upper Chickasawhay (AL,MS)
03170003	Cataloging Unit	Lower Chickasawhay (AL,MS)
03170004	Cataloging Unit	Upper Leaf (MS)
03170005	Cataloging Unit	Lower Leaf (MS)
03170006	Cataloging Unit	Pascagoula (MS)
03170007	Cataloging Unit	Black (MS)
03170008	Cataloging Unit	Escatawpa (AL,MS)
03170009	Cataloging Unit	Mississippi Coastal (AL,MS)
0318	Subregion	The Pearl River Basin (LA,MS)
031800	Accounting Unit	Pearl (LA,MS)
03180001	Cataloging Unit	Upper Pearl (MS)
03180002	Cataloging Unit	Middle Pearl-Strong (MS)
03180003	Cataloging Unit	Middle Pearl-Silver (MS)
03180004	Cataloging Unit	Lower Pearl (LA,MS)
03180005	Cataloging Unit	Bogue Chitto (LA,MS)
04 	Region	Great Lakes Region (IL,IN,MI,MN,NY,OH,PA,WI)
0401	Subregion	Western Lake Superior (MI,MN,WI)
040101	Accounting Unit	Northwestern Lake Superior (MN)
04010101	Cataloging Unit	Baptism-Brule (MN
04010102	Cataloging Unit	Beaver-Lester (MN
040102	Accounting Unit	The St. Louis River Basin (MN,WI)
04010201	Cataloging Unit	St. Louis (MN,WI)
04010202	Cataloging Unit	Cloquet (MN)
040103	Accounting Unit	Southwestern Lake Superior (MI,MN,WI)
04010301	Cataloging Unit	Beartrap-Nemadji (MN,WI)
04010302	Cataloging Unit	Bad-Montreal (MI,WI)
0402	Subregion	Southern Lake Superior-Lake Superior (MI,MN,WI)
040201	Accounting Unit	Southcentral Lake Superior (MI,WI)
04020101	Cataloging Unit	Black-Presque Isle (MI,WI)
04020102	Cataloging Unit	Ontonagon (MI,WI)
04020103	Cataloging Unit	Keweenaw Peninsula (MI)
04020104	Cataloging Unit	Sturgeon (MI)
04020105	Cataloging Unit	Dead-Kelsey (MI)
040202	Accounting Unit	Southeastern Lake Superior (MI)
04020201	Cataloging Unit	Betsy-Chocolay (MI)
04020202	Cataloging Unit	Tahquamenon (MI)
04020203	Cataloging Unit	Waiska (MI)
040203	Accounting Unit	Lake Superior (MI,MN,WI)
04020300	Cataloging Unit	Lake Superior (MI,MN,WI)
0403	Subregion	Northwestern Lake Michigan (MI,WI)
040301	Accounting Unit	Northwestern Lake Michigan (MI,WI)
04030101	Cataloging Unit	Manitowoc-Sheboygan (WI)
04030102	Cataloging Unit	Door-Kewaunee (WI)
04030103	Cataloging Unit	Duck-Pensaukee (WI)
04030104	Cataloging Unit	Oconto (WI)
04030105	Cataloging Unit	Peshtigo (WI)
04030106	Cataloging Unit	Brule (MI,WI)
04030107	Cataloging Unit	Michigamme (MI)
04030108	Cataloging Unit	Menominee (MI,WI)
04030109	Cataloging Unit	Cedar-Ford (MI)
04030110	Cataloging Unit	Escanaba (MI)
04030111	Cataloging Unit	Tacoosh-Whitefish (MI)
04030112	Cataloging Unit	Fishdam-Sturgeon (MI)
040302	Accounting Unit	The Fox River Basin (WI)
04030201	Cataloging Unit	Upper Fox (WI)
04030202	Cataloging Unit	Wolf (WI)
04030203	Cataloging Unit	Lake Winnebago (WI)
04030204	Cataloging Unit	Lower Fox (WI)
0404	Subregion	Southwestern Lake Michigan (IL,IN,MI,WI)
040400	Accounting Unit	Southwestern Lake Michigan (IL,IN,MI,WI)
04040001	Cataloging Unit	Little Calumet-Galien (IL,IN,MI)
04040002	Cataloging Unit	Pike-Root (IL,WI)
04040003	Cataloging Unit	Milwaukee (WI)
0405	Subregion	Southeastern Lake Michigan (IN,MI)
040500	Accounting Unit	Southeastern Lake Michigan (IN,MI)
04050001	Cataloging Unit	St. Joseph (IN,MI)
04050002	Cataloging Unit	Black-Macatawa (MI)
04050003	Cataloging Unit	Kalamazoo (MI)
04050004	Cataloging Unit	Upper Grand (MI)
04050005	Cataloging Unit	Maple (MI)
04050006	Cataloging Unit	Lower Grand (MI)
04050007	Cataloging Unit	Thornapple (MI)
0406	Subregion	Northeastern Lake Michigan-Lake Michigan (IL,IN,MI,WI)
040601	Accounting Unit	Northeastern Lake Michigan (MI)
04060101	Cataloging Unit	Pere Marquette-White (MI)
04060102	Cataloging Unit	Muskegon (MI)
04060103	Cataloging Unit	Manistee (MI)
04060104	Cataloging Unit	Betsie-Platte (MI)
04060105	Cataloging Unit	Boardman-Charlevoix (MI)
04060106	Cataloging Unit	Manistique (MI)
04060107	Cataloging Unit	Brevoort-Millecoquins (MI)
040602	Accounting Unit	Lake Michigan (IL,IN,MI,WI)
04060200	Cataloging Unit	Lake Michigan (IL,IN,MI,WI)
0407	Subregion	Northwestern Lake Huron (MI)
040700	Accounting Unit	Northwestern Lake Huron (MI)
04070001	Cataloging Unit	St. Marys (MI)
04070002	Cataloging Unit	Carp-Pine (MI)
04070003	Cataloging Unit	Lone Lake-Ocqueoc (MI)
04070004	Cataloging Unit	Cheboygan (MI)
04070005	Cataloging Unit	Black (MI)
04070006	Cataloging Unit	Thunder Bay (MI)
04070007	Cataloging Unit	Au Sable (MI)
0408	Subregion	Southwestern Lake Huron-Lake Huron (MI)
040801	Accounting Unit	Southwestern Lake Huron (MI)
04080101	Cataloging Unit	Au Gres-Rifle (MI)
04080102	Cataloging Unit	Kawkawlin-Pine (MI)
04080103	Cataloging Unit	Pigeon-Wiscoggin (MI)
04080104	Cataloging Unit	Birch-Willow (MI)
040802	Accounting Unit	The Saginaw River Basin (MI)
04080201	Cataloging Unit	Tittabawassee (MI)
04080202	Cataloging Unit	Pine (MI)
04080203	Cataloging Unit	Shiawassee (MI)
04080204	Cataloging Unit	Flint (MI)
04080205	Cataloging Unit	Cass (MI)
04080206	Cataloging Unit	Saginaw (MI)
040803	Accounting Unit	Lake Huron (MI)
04080300	Cataloging Unit	Lake Huron (MI)
0409	Subregion	The St. Clair And Detroit River Basins (MI)
040900	Accounting Unit	St. Clair-Detroit (MI)
04090001	Cataloging Unit	St. Clair (MI)
04090002	Cataloging Unit	Lake St. Clair (MI)
04090003	Cataloging Unit	Clinton (MI)
04090004	Cataloging Unit	Detroit (MI)
04090005	Cataloging Unit	Huron (MI)
0410	Subregion	Western Lake Erie (IN,MI,OH)
041000	Accounting Unit	Western Lake Erie (IN,MI,OH)
04100001	Cataloging Unit	Ottawa-Stony (MI,OH)
04100002	Cataloging Unit	Raisin (MI,OH)
04100003	Cataloging Unit	St. Joseph (IN,MI,OH)
04100004	Cataloging Unit	St. Marys (IN,OH)
04100005	Cataloging Unit	Upper Maumee (IN,OH)
04100006	Cataloging Unit	Tiffin (MI,OH)
04100007	Cataloging Unit	Auglaize (IN,OH)
04100008	Cataloging Unit	Blanchard (OH)
04100009	Cataloging Unit	Lower Maumee (OH)
04100010	Cataloging Unit	Cedar-Portage (OH)
04100011	Cataloging Unit	Sandusky (OH)
04100012	Cataloging Unit	Huron-Vermilion (OH)
0411	Subregion	Southern Lake Erie (OH,PA)
041100	Accounting Unit	Southern Lake Erie (OH,PA)
04110001	Cataloging Unit	Black-Rocky (OH)
04110002	Cataloging Unit	Cuyahoga (OH)
04110003	Cataloging Unit	Ashtabula-Chagrin (OH,PA)
04110004	Cataloging Unit	Grand (OH)
0412	Subregion	Eastern Lake Erie-Lake Erie (MI,NY,OH,PA)
041201	Accounting Unit	Eastern Lake Erie (NY,OH,PA)
04120101	Cataloging Unit	Chautauqua-Conneaut (NY,OH,PA)
04120102	Cataloging Unit	Cattaraugus (NY)
04120103	Cataloging Unit	Buffalo-Eighteenmile (NY)
04120104	Cataloging Unit	Niagara (NY)
041202	Accounting Unit	Lake Erie (MI,NY,OH,PA)
04120200	Cataloging Unit	Lake Erie (MI,NY,OH,PA)
0413	Subregion	Southwestern Lake Ontario (NY,PA)
041300	Accounting Unit	Southwestern Lake Ontario (NY,PA)
04130001	Cataloging Unit	Oak Orchard-Twelvemile (NY)
04130002	Cataloging Unit	Upper Genesee (NY,PA)
04130003	Cataloging Unit	Lower Genesee (NY)
0414	Subregion	Southeastern Lake Ontario (NY)
041401	Accounting Unit	Southeastern Lake Ontario (NY)
04140101	Cataloging Unit	Irondequoit-Ninemile (NY)
04140102	Cataloging Unit	Salmon-Sandy (NY)
041402	Accounting Unit	The Oswego River Basin (NY)
04140201	Cataloging Unit	Seneca (NY)
04140202	Cataloging Unit	Oneida (NY)
04140203	Cataloging Unit	Oswego (NY)
0415	Subregion	Northeastern Lake Ontario-Lake Ontario-St. Lawrence (NY)
041501	Accounting Unit	Northeastern Lake Ontario (NY)
04150101	Cataloging Unit	Black (NY)
04150102	Cataloging Unit	Chaumont-Perch (NY)
041502	Accounting Unit	Lake Ontario (NY)
04150200	Cataloging Unit	Lake Ontario (NY)
041503	Accounting Unit	St. Lawrence (NY)
04150301	Cataloging Unit	Upper St. Lawrence (NY)
04150302	Cataloging Unit	Oswegatchie (NY)
04150303	Cataloging Unit	Indian (NY)
04150304	Cataloging Unit	Grass (NY)
04150305	Cataloging Unit	Raquette (NY)
04150306	Cataloging Unit	St. Regis (NY)
04150307	Cataloging Unit	English-Salmon (NY)
05 	Region	Ohio Region (IL,IN,KY,MD,NY,NC,OH,PA,TN,VA,WV)
0501	Subregion	The Allegheny River Basin (NY,PA)
050100	Accounting Unit	Allegheny (NY,PA)
05010001	Cataloging Unit	Upper Allegheny (NY,PA)
05010002	Cataloging Unit	Conewango (NY,PA)
05010003	Cataloging Unit	Middle Allegheny-Tionesta (PA)
05010004	Cataloging Unit	French (NY,PA)
05010005	Cataloging Unit	Clarion (PA)
05010006	Cataloging Unit	Middle Allegheny-Redbank (PA)
05010007	Cataloging Unit	Conemaugh (PA)
05010008	Cataloging Unit	Kiskiminetas (PA)
05010009	Cataloging Unit	Lower Allegheny (PA)
0502	Subregion	The Monongahela River Basin (MD,PA,WV)
050200	Accounting Unit	Monongahela (MD,PA,WV)
05020001	Cataloging Unit	Tygart Valley (WV)
05020002	Cataloging Unit	West Fork (WV)
05020003	Cataloging Unit	Upper Monongahela (PA,WV)
05020004	Cataloging Unit	Cheat (PA,WV)
05020005	Cataloging Unit	Lower Monongahela (PA,WV)
05020006	Cataloging Unit	Youghiogheny (MD,PA,WV)
0503	Subregion	The Ohio River Basin (OH,PA,WV)
050301	Accounting Unit	Upper Ohio-Beaver (OH,PA,WV)
05030101	Cataloging Unit	Upper Ohio (OH,PA,WV)
05030102	Cataloging Unit	Shenango (OH,PA)
05030103	Cataloging Unit	Mahoning (OH,PA)
05030104	Cataloging Unit	Beaver (PA)
05030105	Cataloging Unit	Connoquenessing (PA)
05030106	Cataloging Unit	Upper Ohio-Wheeling (OH,PA,WV)
050302	Accounting Unit	Upper Ohio-Little Kanawha (OH,WV)
05030201	Cataloging Unit	Little Muskingum-Middle Island (OH,WV)
05030202	Cataloging Unit	Upper Ohio-Shade (OH,WV)
05030203	Cataloging Unit	Little Kanawha (WV)
05030204	Cataloging Unit	Hocking (OH)
0504	Subregion	The Muskingum River Basin (OH)
050400	Accounting Unit	Muskingum (OH)
05040001	Cataloging Unit	Tuscarawas (OH)
05040002	Cataloging Unit	Mohican (OH)
05040003	Cataloging Unit	Walhonding (OH)
05040004	Cataloging Unit	Muskingum (OH)
05040005	Cataloging Unit	Wills (OH
05040006	Cataloging Unit	Licking (OH
0505	Subregion	The Kanawha River Basin (NC,VA,WV)
050500	Accounting Unit	Kanawha (NC,VA,WV)
05050001	Cataloging Unit	Upper New (NC,VA)
05050002	Cataloging Unit	Middle New (VA,WV)
05050003	Cataloging Unit	Greenbrier (WV)
05050004	Cataloging Unit	Lower New (WV)
05050005	Cataloging Unit	Gauley (WV)
05050006	Cataloging Unit	Upper Kanawha (WV)
05050007	Cataloging Unit	Elk (WV)
05050008	Cataloging Unit	Lower Kanawha (WV)
05050009	Cataloging Unit	Coal (WV)
0506	Subregion	The Scioto River Basin (OH)
050600	Accounting Unit	Scioto (OH)
05060001	Cataloging Unit	Upper Scioto (OH)
05060002	Cataloging Unit	Lower Scioto (OH)
05060003	Cataloging Unit	Paint (OH)
0507	Subregion	The Big Sandy And Guyandotte River Basins (KY,VA,WV)
050701	Accounting Unit	The Guyandotte River Basin (WV)
05070101	Cataloging Unit	Upper Guyandotte (WV)
05070102	Cataloging Unit	Lower Guyandotte (WV)
050702	Accounting Unit	The Big Sandy River Basin (KY,VA,WV)
05070201	Cataloging Unit	Tug (KY,VA,WV)
05070202	Cataloging Unit	Upper Levisa (KY,VA)
05070203	Cataloging Unit	Lower Levisa (KY)
05070204	Cataloging Unit	Big Sandy (KY,WV)
0508	Subregion	The Great Miami River Basin (IN,OH)
050800	Accounting Unit	Great Miami (IN,OH)
05080001	Cataloging Unit	Upper Great Miami (IN,OH)
05080002	Cataloging Unit	Lower Great Miami (IN,OH)
05080003	Cataloging Unit	Whitewater (IN,OH)
0509	Subregion	The Ohio River Basin (IN,KY,OH,WV)
050901	Accounting Unit	Middle Ohio-Raccoon (KY,OH,WV)
05090101	Cataloging Unit	Raccoon-Symmes (OH,WV)
05090102	Cataloging Unit	Twelvepole (WV)
05090103	Cataloging Unit	Little Scioto-Tygarts (KY,OH)
05090104	Cataloging Unit	Little Sandy (KY)
050902	Accounting Unit	Middle Ohio-Little Miami (IN,KY,OH)
05090201	Cataloging Unit	Ohio Brush-Whiteoak (KY,OH)
05090202	Cataloging Unit	Little Miami (OH)
05090203	Cataloging Unit	Middle Ohio-Laughery (IN,KY,OH)
0510	Subregion	The Licking and Kentucky River Basins (KY)
051001	Accounting Unit	The Licking River Basin (KY)
05100101	Cataloging Unit	Licking (KY)
05100102	Cataloging Unit	South Fork Licking (KY)
051002	Accounting Unit	The Kentucky River Basin (KY)
05100201	Cataloging Unit	North Fork Kentucky (KY)
05100202	Cataloging Unit	Middle Fork Kentucky (KY)
05100203	Cataloging Unit	South Fork Kentucky (KY)
05100204	Cataloging Unit	Upper Kentucky (KY)
05100205	Cataloging Unit	Lower Kentucky (KY)
0511	Subregion	The Green River Basin (KY,TN)
051100	Accounting Unit	Green (KY,TN)
05110001	Cataloging Unit	Upper Green (KY)
05110002	Cataloging Unit	Barren (KY,TN)
05110003	Cataloging Unit	Middle Green (KY)
05110004	Cataloging Unit	Rough (KY)
05110005	Cataloging Unit	Lower Green (KY)
05110006	Cataloging Unit	Pond (KY)
0512	Subregion	The Wabash River Basin (IL,IN,OH)
051201	Accounting Unit	The Wabash River Basin (IL,IN,OH)
05120101	Cataloging Unit	Upper Wabash (IN,OH)
05120102	Cataloging Unit	Salamonie (IN)
05120103	Cataloging Unit	Mississinewa (IN,OH)
05120104	Cataloging Unit	Eel (IN)
05120105	Cataloging Unit	Middle Wabash-Deer (IN)
05120106	Cataloging Unit	Tippecanoe (IN)
05120107	Cataloging Unit	Wildcat (IN)
05120108	Cataloging Unit	Middle Wabash-Little Vermilion (IL,IN)
05120109	Cataloging Unit	Vermilion (IL,IN)
05120110	Cataloging Unit	Sugar (IN)
05120111	Cataloging Unit	Middle Wabash-Busseron (IL,IN)
05120112	Cataloging Unit	Embarras (IL)
05120113	Cataloging Unit	Lower Wabash (IL,IN)
05120114	Cataloging Unit	Little Wabash (IL)
05120115	Cataloging Unit	Skillet (IL)
051202	Accounting Unit	The Patoka and White River Basins (IN)
05120201	Cataloging Unit	Upper White (IN)
05120202	Cataloging Unit	Lower White (IN)
05120203	Cataloging Unit	Eel (IN)
05120204	Cataloging Unit	Driftwood (IN)
05120205	Cataloging Unit	Flatrock-Haw (IN)
05120206	Cataloging Unit	Upper East Fork White (IN)
05120207	Cataloging Unit	Muscatatuck (IN)
05120208	Cataloging Unit	Lower East Fork White (IN)
05120209	Cataloging Unit	Patoka (IN)
0513	Subregion	The Cumberland River Basin (KY,TN)
051301	Accounting Unit	Upper Cumberland (KY,TN)
05130101	Cataloging Unit	Upper Cumberland (KY,TN)
05130102	Cataloging Unit	Rockcastle (KY)
05130103	Cataloging Unit	Upper Cumberland-Lake Cumberland (KY,TN)
05130104	Cataloging Unit	South Fork Cumberland (KY,TN)
05130105	Cataloging Unit	Obey (KY,TN)
05130106	Cataloging Unit	Upper Cumberland-Cordell Hull Reservoir (TN)
05130107	Cataloging Unit	Collins (TN)
05130108	Cataloging Unit	Caney (TN)
051302	Accounting Unit	Lower Cumberland (KY,TN)
05130201	Cataloging Unit	Lower Cumberland-Old Hickory Lake (TN)
05130202	Cataloging Unit	Lower Cumberland-Sycamore (TN)
05130203	Cataloging Unit	Stones (TN)
05130204	Cataloging Unit	Harpeth (TN)
05130205	Cataloging Unit	Lower Cumberland (KY,TN)
05130206	Cataloging Unit	Red (KY,TN)
0514	Subregion	The Ohio River Basin (IL,IN,KY)
051401	Accounting Unit	Lower Ohio-Salt (IN,KY)
05140101	Cataloging Unit	Silver-Little Kentucky (IN,KY)
05140102	Cataloging Unit	Salt (KY)
05140103	Cataloging Unit	Rolling Fork (KY)
05140104	Cataloging Unit	Blue-Sinking (IN,KY)
051402	Accounting Unit	Lower Ohio (IL,IN,KY)
05140201	Cataloging Unit	Lower Ohio-Little Pigeon (IN,KY)
05140202	Cataloging Unit	Highland-Pigeon (IN,KY)
05140203	Cataloging Unit	Lower Ohio-Bay (IL,KY)
05140204	Cataloging Unit	Saline (IL)
05140205	Cataloging Unit	Tradewater (KY)
05140206	Cataloging Unit	Lower Ohio (IL,KY)
06 	Region	Tennessee Region (AL,GA,KY,MS,NC,TN,VA)
0601	Subregion	Upper Tennessee (GA,NC,TN,VA)
060101	Accounting Unit	French Broad-Holston (NC,TN,VA)
06010101	Cataloging Unit	North Fork Holston (TN,VA)
06010102	Cataloging Unit	South Fork Holston (TN,VA)
06010103	Cataloging Unit	Watauga (NC,TN)
06010104	Cataloging Unit	Holston (TN)
06010105	Cataloging Unit	Upper French Broad (NC,TN)
06010106	Cataloging Unit	Pigeon (NC,TN)
06010107	Cataloging Unit	Lower French Broad (TN)
06010108	Cataloging Unit	Nolichucky (NC,TN)
060102	Accounting Unit	Upper Tennessee (GA,NC,TN,VA)
06010201	Cataloging Unit	Watts Bar Lake (TN)
06010202	Cataloging Unit	Upper Little Tennessee (GA,NC)
06010203	Cataloging Unit	Tuckasegee (NC)
06010204	Cataloging Unit	Lower Little Tennessee (NC,TN)
06010205	Cataloging Unit	Upper Clinch (TN,VA)
06010206	Cataloging Unit	Powell (TN,VA)
06010207	Cataloging Unit	Lower Clinch (TN)
06010208	Cataloging Unit	Emory (TN)
0602	Subregion	Middle Tennessee-Hiwassee (AL,GA,NC,TN)
060200	Accounting Unit	Middle Tennessee-Hiwassee (AL,GA,NC,TN)
06020001	Cataloging Unit	Middle Tennessee-Chickamauga (AL,GA,TN)
06020002	Cataloging Unit	Hiwassee (GA,NC,TN)
06020003	Cataloging Unit	Ocoee (GA,NC,TN)
06020004	Cataloging Unit	Sequatchie (TN)
0603	Subregion	Middle Tennessee-Elk (AL,GA,MS,TN)
060300	Accounting Unit	Middle Tennessee-Elk (AL,GA,MS,TN)
06030001	Cataloging Unit	Guntersville Lake (AL,GA,TN)
06030002	Cataloging Unit	Wheeler Lake (AL,TN)
06030003	Cataloging Unit	Upper Elk (AL,TN)
06030004	Cataloging Unit	Lower Elk (AL,TN)
06030005	Cataloging Unit	Pickwick Lake (AL,MS,TN)
06030006	Cataloging Unit	Bear (AL,MS)
0604	Subregion	Lower Tennessee (KY,MS,TN)
060400	Accounting Unit	Lower Tennessee (KY,MS,TN)
06040001	Cataloging Unit	Lower Tennessee-Beech (MS,TN)
06040002	Cataloging Unit	Upper Duck (TN)
06040003	Cataloging Unit	Lower Duck (TN)
06040004	Cataloging Unit	Buffalo (TN)
06040005	Cataloging Unit	Kentucky Lake (KY,TN)
06040006	Cataloging Unit	Lower Tennessee (KY,TN)
07 	Region	Upper Mississippi Region (IL,IN,IA,MI,MN,MO,SD,WI)
0701	Subregion	Mississippi Headwaters (MN)
070101	Accounting Unit	Mississippi Headwaters (MN)
07010101	Cataloging Unit	Mississippi Headwaters (MN)
07010102	Cataloging Unit	Leech Lake (MN)
07010103	Cataloging Unit	Prairie-Willow (MN)
07010104	Cataloging Unit	Elk-Nokasippi (MN)
07010105	Cataloging Unit	Pine (MN)
07010106	Cataloging Unit	Crow Wing (MN)
07010107	Cataloging Unit	Redeye (MN)
07010108	Cataloging Unit	Long Prairie (MN)
070102	Accounting Unit	Upper Mississippi-Crow-Rum (MN)
07010201	Cataloging Unit	Platte-Spunk (MN)
07010202	Cataloging Unit	Sauk (MN)
07010203	Cataloging Unit	Clearwater-Elk (MN)
07010204	Cataloging Unit	Crow (MN)
07010205	Cataloging Unit	South Fork Crow (MN)
07010206	Cataloging Unit	Twin Cities (MN)
07010207	Cataloging Unit	Rum (MN)
0702	Subregion	The Minnesota River Basin (IA,MN,SD)
070200	Accounting Unit	Minnesota (IA,MN,SD)
07020001	Cataloging Unit	Upper Minnesota (MN,SD)
07020002	Cataloging Unit	Pomme De Terre (MN)
07020003	Cataloging Unit	Lac Qui Parle (MN,SD)
07020004	Cataloging Unit	Hawk-Yellow Medicine (MN)
07020005	Cataloging Unit	Chippewa (MN)
07020006	Cataloging Unit	Redwood (MN)
07020007	Cataloging Unit	Middle Minnesota (MN)
07020008	Cataloging Unit	Cottonwood (MN)
07020009	Cataloging Unit	Blue Earth (IA,MN)
07020010	Cataloging Unit	Watonwan (MN)
07020011	Cataloging Unit	Le Sueur (MN)
07020012	Cataloging Unit	Lower Minnesota (MN)
0703	Subregion	The St. Croix River Basin (MN,WI)
070300	Accounting Unit	St. Croix (MN,WI)
07030001	Cataloging Unit	Upper St. Croix (MN,WI)
07030002	Cataloging Unit	Namekagon (WI)
07030003	Cataloging Unit	Kettle (MN)
07030004	Cataloging Unit	Snake (MN)
07030005	Cataloging Unit	Lower St. Croix (MN,WI)
0704	Subregion	Upper Mississippi-Black-Root (IA,MN,WI)
070400	Accounting Unit	Upper Mississippi-Black-Root (IA,MN,WI)
07040001	Cataloging Unit	Rush-Vermillion (MN,WI)
07040002	Cataloging Unit	Cannon (MN)
07040003	Cataloging Unit	Buffalo-Whitewater (MN,WI)
07040004	Cataloging Unit	Zumbro (MN)
07040005	Cataloging Unit	Trempealeau (WI)
07040006	Cataloging Unit	La Crosse-Pine (MN,WI)
07040007	Cataloging Unit	Black (WI)
07040008	Cataloging Unit	Root (IA,MN)
0705	Subregion	The Chippewa River Basin (MI,WI)
070500	Accounting Unit	Chippewa (MI,WI)
07050001	Cataloging Unit	Upper Chippewa (WI)
07050002	Cataloging Unit	Flambeau (MI,WI)
07050003	Cataloging Unit	South Fork Flambeau (WI)
07050004	Cataloging Unit	Jump (WI)
07050005	Cataloging Unit	Lower Chippewa (WI)
07050006	Cataloging Unit	Eau Claire (WI)
07050007	Cataloging Unit	Red Cedar (WI)
0706	Subregion	Upper Mississippi-Maquoketa-Plum (IL,IA,MN,WI)
070600	Accounting Unit	Upper Mississippi-Maquoketa-Plum (IL,IA,MN,WI)
07060001	Cataloging Unit	Coon-Yellow (IA,MN,WI)
07060002	Cataloging Unit	Upper Iowa (IA,MN)
07060003	Cataloging Unit	Grant-Little Maquoketa (IA,WI)
07060004	Cataloging Unit	Turkey (IA)
07060005	Cataloging Unit	Apple-Plum (IL,IA,WI)
07060006	Cataloging Unit	Maquoketa (IA)
0707	Subregion	The Wisconsin River Basin (MI,WI)
070700	Accounting Unit	Wisconsin (MI,WI)
07070001	Cataloging Unit	Upper Wisconsin (MI,WI)
07070002	Cataloging Unit	Lake Dubay (WI)
07070003	Cataloging Unit	Castle Rock (WI)
07070004	Cataloging Unit	Baraboo (WI)
07070005	Cataloging Unit	Lower Wisconsin (WI)
07070006	Cataloging Unit	Kickapoo (WI)
0708	Subregion	Upper Mississippi-Iowa-Skunk-Wapsipinicon (IL,IA,MN)
070801	Accounting Unit	Upper Mississippi-Skunk-Wapsipinicon (IL,IA,MN)
07080101	Cataloging Unit	Copperas-Duck (IL,IA)
07080102	Cataloging Unit	Upper Wapsipinicon (IA,MN)
07080103	Cataloging Unit	Lower Wapsipinicon (IA)
07080104	Cataloging Unit	Flint-Henderson (IL,IA)
07080105	Cataloging Unit	South Skunk (IA)
07080106	Cataloging Unit	North Skunk (IA)
07080107	Cataloging Unit	Skunk (IA)
070802	Accounting Unit	The Iowa River Basin (IA,MN)
07080201	Cataloging Unit	Upper Cedar (IA,MN)
07080202	Cataloging Unit	Shell Rock (IA,MN)
07080203	Cataloging Unit	Winnebago (IA,MN)
07080204	Cataloging Unit	West Fork Cedar (IA)
07080205	Cataloging Unit	Middle Cedar (IA)
07080206	Cataloging Unit	Lower Cedar (IA)
07080207	Cataloging Unit	Upper Iowa (IA)
07080208	Cataloging Unit	Middle Iowa (IA)
07080209	Cataloging Unit	Lower Iowa (IA)
0709	Subregion	The Rock River Basin (IL,WI)
070900	Accounting Unit	Rock (IL,WI)
07090001	Cataloging Unit	Upper Rock (IL,WI)
07090002	Cataloging Unit	Crawfish (WI)
07090003	Cataloging Unit	Pecatonica (IL,WI)
07090004	Cataloging Unit	Sugar (IL,WI)
07090005	Cataloging Unit	Lower Rock (IL,WI)
07090006	Cataloging Unit	Kishwaukee (IL,WI)
07090007	Cataloging Unit	Green (IL)
0710	Subregion	The Des Moines River Basin (IA,MN,MO)
071000	Accounting Unit	Des Moines (IA,MN,MO)
07100001	Cataloging Unit	Des Moines Headwaters (MN)
07100002	Cataloging Unit	Upper Des Moines (IA,MN)
07100003	Cataloging Unit	East Fork Des Moines (IA,MN)
07100004	Cataloging Unit	Middle Des Moines (IA)
07100005	Cataloging Unit	Boone (IA)
07100006	Cataloging Unit	North Raccoon (IA)
07100007	Cataloging Unit	South Raccoon (IA)
07100008	Cataloging Unit	Lake Red Rock (IA)
07100009	Cataloging Unit	Lower Des Moines (IA,MO)
0711	Subregion	Upper Mississippi-Salt (IL,IA,MO)
071100	Accounting Unit	Upper Mississippi-Salt (IL,IA,MO)
07110001	Cataloging Unit	Bear-Wyaconda (IL,IA,MO)
07110002	Cataloging Unit	North Fabius (IA,MO)
07110003	Cataloging Unit	South Fabius (MO)
07110004	Cataloging Unit	The Sny (IL,MO
07110005	Cataloging Unit	North Fork Salt (MO)
07110006	Cataloging Unit	South Fork Salt (MO)
07110007	Cataloging Unit	Salt (MO)
07110008	Cataloging Unit	Cuivre (MO)
07110009	Cataloging Unit	Peruque-Piasa (IL,MO)
0712	Subregion	The Illinois River Basin (IL,IN,MI,WI)
071200	Accounting Unit	Upper Illinois (IL,IN,MI,WI)
07120001	Cataloging Unit	Kankakee (IL,IN,MI)
07120002	Cataloging Unit	Iroquois (IL,IN)
07120003	Cataloging Unit	Chicago (IL,IN)
07120004	Cataloging Unit	Des Plaines (IL,WI)
07120005	Cataloging Unit	Upper Illinois (IL)
07120006	Cataloging Unit	Upper Fox (IL,WI)
07120007	Cataloging Unit	Lower Fox (IL)
0713	Subregion	The Illinois River Basin (IL)
071300	Accounting Unit	Lower Illinois (IL)
07130001	Cataloging Unit	Lower Illinois-Senachwine Lake (IL)
07130002	Cataloging Unit	Vermilion (IL)
07130003	Cataloging Unit	Lower Illinois-Lake Chautauqua (IL)
07130004	Cataloging Unit	Mackinaw (IL)
07130005	Cataloging Unit	Spoon (IL)
07130006	Cataloging Unit	Upper Sangamon (IL)
07130007	Cataloging Unit	South Fork Sangamon (IL)
07130008	Cataloging Unit	Lower Sangamon (IL)
07130009	Cataloging Unit	Salt (IL)
07130010	Cataloging Unit	La Moine (IL)
07130011	Cataloging Unit	Lower Illinois (IL)
07130012	Cataloging Unit	Macoupin (IL)
0714	Subregion	Upper Mississippi-Kaskaskia-Meramec (IL,MO)
071401	Accounting Unit	Upper Mississippi-Meramec (IL,MO)
07140101	Cataloging Unit	Cahokia-Joachim (IL,MO)
07140102	Cataloging Unit	Meramec (MO)
07140103	Cataloging Unit	Bourbeuse (MO)
07140104	Cataloging Unit	Big (MO)
07140105	Cataloging Unit	Upper Mississippi-Cape Girardeau (IL,MO)
07140106	Cataloging Unit	Big Muddy (IL)
07140107	Cataloging Unit	Whitewater (MO)
07140108	Cataloging Unit	Cache (IL)
071402	Accounting Unit	The Kaskaskia River Basin (IL)
07140201	Cataloging Unit	Upper Kaskaskia (IL)
07140202	Cataloging Unit	Middle Kaskaskia (IL)
07140203	Cataloging Unit	Shoal (IL)
07140204	Cataloging Unit	Lower Kaskaskia (IL)
08 	Region	Lower Mississippi Region (AR,KY,LA,MS,MO,TN)
0801	Subregion	Lower Mississippi-Hatchie (AR,KY,MS,MO,TN)
080101	Accounting Unit	Lower Mississippi-Memphis (AR,KY,MS,MO,TN)
08010100	Cataloging Unit	Lower Mississippi-Memphis (AR,KY,MS,MO,TN)
080102	Accounting Unit	Hatchie-Obion (KY,MS,TN)
08010201	Cataloging Unit	Bayou De Chien-Mayfield (KY,TN)
08010202	Cataloging Unit	Obion (KY,TN)
08010203	Cataloging Unit	South Fork Obion (TN)
08010204	Cataloging Unit	North Fork Forked Deer (TN)
08010205	Cataloging Unit	South Fork Forked Deer (TN)
08010206	Cataloging Unit	Forked Deer (TN)
08010207	Cataloging Unit	Upper Hatchie (MS,TN)
08010208	Cataloging Unit	Lower Hatchie (MS,TN)
08010209	Cataloging Unit	Loosahatchie (TN)
08010210	Cataloging Unit	Wolf (MS,TN)
08010211	Cataloging Unit	Horn Lake-Nonconnah (MS,TN)
0802	Subregion	Lower Mississippi-St. Francis (AR,MS,MO)
080201	Accounting Unit	Lower Mississippi-Helena (AR,MS)
08020100	Cataloging Unit	Lower Mississippi-Helena (AR,MS)
080202	Accounting Unit	The St. Francis River Basin (AR,MO)
08020201	Cataloging Unit	New Madrid-St. Johns (MO)
08020202	Cataloging Unit	Upper St. Francis (MO)
08020203	Cataloging Unit	Lower St. Francis (AR,MO)
08020204	Cataloging Unit	Little River Ditches (AR,MO)
08020205	Cataloging Unit	L'Anguille (AR)
080203	Accounting Unit	The White River Basin (AR,MO)
08020301	Cataloging Unit	Lower White-Bayou Des Arc (AR)
08020302	Cataloging Unit	Cache (AR,MO)
08020303	Cataloging Unit	Lower White (AR)
08020304	Cataloging Unit	Big (AR)
080204	Accounting Unit	The Arkansas River Basin (AR)
08020401	Cataloging Unit	Lower Arkansas (AR)
08020402	Cataloging Unit	Bayou Meto (AR)
0803	Subregion	Lower Mississippi-Yazoo (AR,LA,MS,TN)
080301	Accounting Unit	Lower Mississippi-Greenville (AR,MS)
08030100	Cataloging Unit	Lower Mississippi-Greenville (AR,LA,MS)
080302	Accounting Unit	The Yazoo River Basin (LA,MS,TN)
08030201	Cataloging Unit	Little Tallahatchie (MS)
08030202	Cataloging Unit	Tallahatchie (MS)
08030203	Cataloging Unit	Yocona (MS)
08030204	Cataloging Unit	Coldwater (MS,TN)
08030205	Cataloging Unit	Yalobusha (MS)
08030206	Cataloging Unit	Upper Yazoo (MS)
08030207	Cataloging Unit	Big Sunflower (MS)
08030208	Cataloging Unit	Lower Yazoo (LA,MS)
08030209	Cataloging Unit	Deer-Steele (LA,MS)
0804	Subregion	Lower Red-Ouachita (AR,LA)
080401	Accounting Unit	Upper Ouachita (AR)
08040101	Cataloging Unit	Ouachita Headwaters (AR)
08040102	Cataloging Unit	Upper Ouachita (AR)
08040103	Cataloging Unit	Little Missouri (AR)
080402	Accounting Unit	Lower Ouachita (AR,LA)
08040201	Cataloging Unit	Lower Ouachita-Smackover (AR)
08040202	Cataloging Unit	Lower Ouachita-Bayou De Loutre (AR,LA)
08040203	Cataloging Unit	Upper Saline (AR)
08040204	Cataloging Unit	Lower Saline (AR)
08040205	Cataloging Unit	Bayou Bartholomew (AR,LA)
08040206	Cataloging Unit	Bayou D'Arbonne (AR,LA)
08040207	Cataloging Unit	Lower Ouachita (LA)
080403	Accounting Unit	The Red River Basin (LA)
08040301	Cataloging Unit	Lower Red (LA)
08040302	Cataloging Unit	Castor (LA)
08040303	Cataloging Unit	Dugdemona (LA)
08040304	Cataloging Unit	Little (LA)
08040305	Cataloging Unit	Black (LA)
08040306	Cataloging Unit	Bayou Cocodrie (LA)
0805	Subregion	The Boeuf and Tensas River Basins (AR,LA)
080500	Accounting Unit	Boeuf-Tensas (AR,LA)
08050001	Cataloging Unit	Boeuf (AR,LA)
08050002	Cataloging Unit	Bayou Macon (AR,LA)
08050003	Cataloging Unit	Tensas (LA)
0806	Subregion	Lower Mississippi-Big Black (LA,MS)
080601	Accounting Unit	Lower Mississippi-Natchez (LA,MS)
08060100	Cataloging Unit	Lower Mississippi-Natchez (LA,MS)
080602	Accounting Unit	Big Black-Homochitto (LA,MS)
08060201	Cataloging Unit	Upper Big Black (MS)
08060202	Cataloging Unit	Lower Big Black (LA,MS)
08060203	Cataloging Unit	Bayou Pierre (LA,MS)
08060204	Cataloging Unit	Coles Creek (LA,MS)
08060205	Cataloging Unit	Homochitto (MS)
08060206	Cataloging Unit	Buffalo (MS)
0807	Subregion	Lower Mississippi-Lake Maurepas (LA,MS)
080701	Accounting Unit	Lower Mississippi-Baton Rouge (LA)
08070100	Cataloging Unit	Lower Mississippi-Baton Rouge (LA)
080702	Accounting Unit	Lake Maurepas (LA,MS)
08070201	Cataloging Unit	Bayou Sara-Thompson (LA,MS)
08070202	Cataloging Unit	Amite (LA,MS)
08070203	Cataloging Unit	Tickfaw (LA,MS)
08070204	Cataloging Unit	Lake Maurepas (LA)
08070205	Cataloging Unit	Tangipahoa (LA,MS)
080703	Accounting Unit	The Lower Grand River Basin (LA)
08070300	Cataloging Unit	Lower Grand (LA)
0808	Subregion	Louisiana Coastal (LA)
080801	Accounting Unit	Atchafalaya-Vermilion (LA)
08080101	Cataloging Unit	Atchafalaya (LA)
08080102	Cataloging Unit	Bayou Teche (LA)
08080103	Cataloging Unit	Vermilion (LA)
080802	Accounting Unit	Calcasieu-Mermentau (LA)
08080201	Cataloging Unit	Mermentau Headwaters (LA)
08080202	Cataloging Unit	Mermentau (LA)
08080203	Cataloging Unit	Upper Calcasieu (LA)
08080204	Cataloging Unit	Whisky Chitto (LA)
08080205	Cataloging Unit	West Fork Calcasieu (LA)
08080206	Cataloging Unit	Lower Calcasieu (LA)
0809	Subregion	Lower Mississippi (LA)
080901	Accounting Unit	Lower Mississippi-New Orleans (LA)
08090100	Cataloging Unit	Lower Mississippi-New Orleans (LA)
080902	Accounting Unit	Lake Pontchartrain (LA)
08090201	Cataloging Unit	Liberty Bayou-Tchefuncta (LA)
08090202	Cataloging Unit	Lake Pontchartrain (LA)
08090203	Cataloging Unit	Eastern Louisiana Coastal (LA)
080903	Accounting Unit	Central Louisiana Coastal (LA)
08090301	Cataloging Unit	East Central Louisiana Coastal (LA)
08090302	Cataloging Unit	West Central Louisiana Coastal (LA)
09 	Region	Souris-Red-Rainy Region (MN,ND,SD)
0901	Subregion	The Souris River Basin (ND)
090100	Accounting Unit	Souris (ND)
09010001	Cataloging Unit	Upper Souris (ND)
09010002	Cataloging Unit	Des Lacs (ND)
09010003	Cataloging Unit	Lower Souris (ND)
09010004	Cataloging Unit	Willow (ND)
09010005	Cataloging Unit	Deep (ND)
0902	Subregion	The Red River Basin (MN,ND,SD)
090201	Accounting Unit	Upper Red (MN,ND,SD)
09020101	Cataloging Unit	Bois De Sioux (MN,ND,SD)
09020102	Cataloging Unit	Mustinka (MN)
09020103	Cataloging Unit	Otter Tail (MN)
09020104	Cataloging Unit	Upper Red (MN,ND)
09020105	Cataloging Unit	Western Wild Rice (ND,SD)
09020106	Cataloging Unit	Buffalo (MN)
09020107	Cataloging Unit	Elm-Marsh (MN,ND)
09020108	Cataloging Unit	Eastern Wild Rice (MN)
09020109	Cataloging Unit	Goose (ND)
090202	Accounting Unit	Devils Lake-Sheyenne (ND)
09020201	Cataloging Unit	Devils Lake (ND)
09020202	Cataloging Unit	Upper Sheyenne (ND)
09020203	Cataloging Unit	Middle Sheyenne (ND)
09020204	Cataloging Unit	Lower Sheyenne (ND)
09020205	Cataloging Unit	Maple (ND)
090203	Accounting Unit	Lower Red (MN,ND)
09020301	Cataloging Unit	Sandhill-Wilson (MN,ND)
09020302	Cataloging Unit	Red Lakes (MN)
09020303	Cataloging Unit	Red Lake (MN)
09020304	Cataloging Unit	Thief (MN)
09020305	Cataloging Unit	Clearwater (MN)
09020306	Cataloging Unit	Grand Marais-Red (MN,ND)
09020307	Cataloging Unit	Turtle (ND)
09020308	Cataloging Unit	Forest (ND)
09020309	Cataloging Unit	Snake (MN)
09020310	Cataloging Unit	Park (ND)
09020311	Cataloging Unit	Lower Red (MN,ND)
09020312	Cataloging Unit	Two Rivers (MN)
09020313	Cataloging Unit	Pembina (ND)
09020314	Cataloging Unit	Roseau (MN)
0903	Subregion	The Rainy River Basin (MN)
090300	Accounting Unit	Rainy (MN)
09030001	Cataloging Unit	Rainy Headwaters (MN)
09030002	Cataloging Unit	Vermilion (MN)
09030003	Cataloging Unit	Rainy Lake (MN)
09030004	Cataloging Unit	Upper Rainy (MN)
09030005	Cataloging Unit	Little Fork (MN)
09030006	Cataloging Unit	Big Fork (MN)
09030007	Cataloging Unit	Rapid (MN)
09030008	Cataloging Unit	Lower Rainy (MN)
09030009	Cataloging Unit	Lake Of The Woods (MN)
10 	Region	Missouri Region (CO,IA,KS,MN,MO,MT,NE,ND,SD,WY)
1001	Subregion	The Saskatchewan River Basin (MT)
100100	Accounting Unit	Saskatchewan (MT)
10010001	Cataloging Unit	Belly (MT)
10010002	Cataloging Unit	St. Mary (MT)
1002	Subregion	Missouri Headwaters (MT,WY)
100200	Accounting Unit	Missouri Headwaters (MT,WY)
10020001	Cataloging Unit	Red Rock (MT)
10020002	Cataloging Unit	Beaverhead (MT)
10020003	Cataloging Unit	Ruby (MT)
10020004	Cataloging Unit	Big Hole (MT)
10020005	Cataloging Unit	Jefferson (MT)
10020006	Cataloging Unit	Boulder (MT)
10020007	Cataloging Unit	Madison (MT,WY)
10020008	Cataloging Unit	Gallatin (MT,WY)
1003	Subregion	Missouri-Marias (MT)
100301	Accounting Unit	Upper Missouri (MT)
10030101	Cataloging Unit	Upper Missouri (MT)
10030102	Cataloging Unit	Upper Missouri-Dearborn (MT)
10030103	Cataloging Unit	Smith (MT)
10030104	Cataloging Unit	Sun (MT)
10030105	Cataloging Unit	Belt (MT)
100302	Accounting Unit	The Marias River Basin (MT)
10030201	Cataloging Unit	Two Medicine (MT)
10030202	Cataloging Unit	Cut Bank (MT)
10030203	Cataloging Unit	Marias (MT)
10030204	Cataloging Unit	Willow (MT)
10030205	Cataloging Unit	Teton (MT)
1004	Subregion	Missouri-Musselshell (MT)
100401	Accounting Unit	Fort Peck Lake (MT)
10040101	Cataloging Unit	Bullwhacker-Dog (MT)
10040102	Cataloging Unit	Arrow (MT)
10040103	Cataloging Unit	Judith (MT)
10040104	Cataloging Unit	Fort Peck Reservoir (MT)
10040105	Cataloging Unit	Big Dry (MT)
10040106	Cataloging Unit	Little Dry (MT)
100402	Accounting Unit	The Musselshell River Basin (MT)
10040201	Cataloging Unit	Upper Musselshell (MT)
10040202	Cataloging Unit	Middle Musselshell (MT)
10040203	Cataloging Unit	Flatwillow (MT)
10040204	Cataloging Unit	Box Elder (MT)
10040205	Cataloging Unit	Lower Musselshell (MT)
1005	Subregion	The Milk River Basin (MT)
100500	Accounting Unit	Milk (MT)
10050001	Cataloging Unit	Milk Headwaters (MT)
10050002	Cataloging Unit	Upper Milk (MT)
10050003	Cataloging Unit	Wild Horse Lake (MT)
10050004	Cataloging Unit	Middle Milk (MT)
10050005	Cataloging Unit	Big Sandy (MT)
10050006	Cataloging Unit	Sage (MT)
10050007	Cataloging Unit	Lodge (MT)
10050008	Cataloging Unit	Battle (MT)
10050009	Cataloging Unit	Peoples (MT)
10050010	Cataloging Unit	Cottonwood (MT)
10050011	Cataloging Unit	Whitewater (MT)
10050012	Cataloging Unit	Lower Milk (MT)
10050013	Cataloging Unit	Frenchman (MT)
10050014	Cataloging Unit	Beaver (MT)
10050015	Cataloging Unit	Rock (MT)
10050016	Cataloging Unit	Porcupine (MT)
1006	Subregion	Missouri-Poplar (MT,ND)
100600	Accounting Unit	Missouri-Poplar (MT,ND)
10060001	Cataloging Unit	Prarie Elk-Wolf (MT)
10060002	Cataloging Unit	Redwater (MT)
10060003	Cataloging Unit	Poplar (MT)
10060004	Cataloging Unit	West Fork Poplar (MT)
10060005	Cataloging Unit	Charlie-Little Muddy (MT,ND)
10060006	Cataloging Unit	Big Muddy (MT,ND)
10060007	Cataloging Unit	Brush Lake Closed Basin (MT,ND)
1007	Subregion	Upper Yellowstone (MT,WY)
100700	Accounting Unit	Upper Yellowstone (MT,WY)
10070001	Cataloging Unit	Yellowstone Headwaters (MT,WY)
10070002	Cataloging Unit	Upper Yellowstone (MT,WY)
10070003	Cataloging Unit	Shields (MT)
10070004	Cataloging Unit	Upper Yellowstone-Lake Basin (MT)
10070005	Cataloging Unit	Stillwater (MT)
10070006	Cataloging Unit	Clarks Fork Yellowstone (MT,WY)
10070007	Cataloging Unit	Upper Yellowstone-Pompeys Pillar (MT)
10070008	Cataloging Unit	Pryor (MT)
1008	Subregion	The Big Horn River Basin (MT,WY)
100800	Accounting Unit	Big Horn (MT,WY)
10080001	Cataloging Unit	Upper Wind (WY)
10080002	Cataloging Unit	Little Wind (WY)
10080003	Cataloging Unit	Popo Agie (WY)
10080004	Cataloging Unit	Muskrat (WY)
10080005	Cataloging Unit	Lower Wind (WY)
10080006	Cataloging Unit	Badwater (WY)
10080007	Cataloging Unit	Upper Bighorn (WY)
10080008	Cataloging Unit	Nowood (WY)
10080009	Cataloging Unit	Greybull (WY)
10080010	Cataloging Unit	Big Horn Lake (MT,WY)
10080011	Cataloging Unit	Dry (WY)
10080012	Cataloging Unit	North Fork Shoshone (WY)
10080013	Cataloging Unit	South Fork Shoshone (WY)
10080014	Cataloging Unit	Shoshone (MT,WY)
10080015	Cataloging Unit	Lower Bighorn (MT)
10080016	Cataloging Unit	Little Bighorn (MT,WY)
1009	Subregion	The Powder and Tongue River Basins (MT,WY)
100901	Accounting Unit	The Tongue River Basin (MT,WY)
10090101	Cataloging Unit	Upper Tongue (MT,WY)
10090102	Cataloging Unit	Lower Tongue (MT)
100902	Accounting Unit	The Powder River Basin (MT,WY)
10090201	Cataloging Unit	Middle Fork Powder (WY)
10090202	Cataloging Unit	Upper Powder (WY)
10090203	Cataloging Unit	South Fork Powder (WY)
10090204	Cataloging Unit	Salt (WY)
10090205	Cataloging Unit	Crazy Woman (WY)
10090206	Cataloging Unit	Clear (WY)
10090207	Cataloging Unit	Middle Powder (MT,WY)
10090208	Cataloging Unit	Little Powder (MT,WY)
10090209	Cataloging Unit	Lower Powder (MT)
10090210	Cataloging Unit	Mizpah (MT)
1010	Subregion	The Yellowstone River Basin (MT,ND)
101000	Accounting Unit	Lower Yellowstone (MT,ND)
10100001	Cataloging Unit	Lower Yellowstone-Sunday (MT)
10100002	Cataloging Unit	Big Porcupine (MT)
10100003	Cataloging Unit	Rosebud (MT)
10100004	Cataloging Unit	Lower Yellowstone (MT,ND)
10100005	Cataloging Unit	O'Fallon (MT)
1011	Subregion	Missouri-Little Missouri (MT,ND,SD,WY)
101101	Accounting Unit	Lake Sakakawea (ND)
10110101	Cataloging Unit	Lake Sakakawea (ND)
10110102	Cataloging Unit	Little Muddy (ND)
101102	Accounting Unit	The Little Missouri River Basin (MT,ND,SD,WY)
10110201	Cataloging Unit	Upper Little Missouri (MT,ND,SD,WY)
10110202	Cataloging Unit	Boxelder (MT,ND,SD)
10110203	Cataloging Unit	Middle Little Missouri (MT,ND)
10110204	Cataloging Unit	Beaver (MT,ND)
10110205	Cataloging Unit	Lower Little Missouri (ND)
1012	Subregion	The Cheyenne River Basin (MT,NE,SD,WY)
101201	Accounting Unit	The Cheyenne River Basin (NE,SD,WY)
10120101	Cataloging Unit	Antelope (WY)
10120102	Cataloging Unit	Dry Fork Cheyenne (WY)
10120103	Cataloging Unit	Upper Cheyenne (WY)
10120104	Cataloging Unit	Lance (WY)
10120105	Cataloging Unit	Lightning (WY)
10120106	Cataloging Unit	Angostura Reservoir (NE,SD,WY)
10120107	Cataloging Unit	Beaver (SD,WY)
10120108	Cataloging Unit	Hat (NE,SD,WY)
10120109	Cataloging Unit	Middle Cheyenne-Spring (SD)
10120110	Cataloging Unit	Rapid (SD)
10120111	Cataloging Unit	Middle Cheyenne-Elk (SD)
10120112	Cataloging Unit	Lower Cheyenne (SD)
10120113	Cataloging Unit	Cherry (SD)
101202	Accounting Unit	The Belle Fourche River Basin (MT,SD,WY)
10120201	Cataloging Unit	Upper Belle Fourche (SD,WY)
10120202	Cataloging Unit	Lower Belle Fourche (MT,SD,WY)
10120203	Cataloging Unit	Redwater (SD,WY)
1013	Subregion	Missouri-Oahe (ND,SD)
101301	Accounting Unit	Lake Oahe (ND,SD)
10130101	Cataloging Unit	Painted Woods-Square Butte (ND)
10130102	Cataloging Unit	Upper Lake Oahe (ND,SD)
10130103	Cataloging Unit	Apple (ND)
10130104	Cataloging Unit	Beaver (ND)
10130105	Cataloging Unit	Lower Lake Oahe (SD)
10130106	Cataloging Unit	West Missouri Coteau (ND,SD)
101302	Accounting Unit	The Cannonball, Heart, and Knife River Basins (ND,SD)
10130201	Cataloging Unit	Knife (ND)
10130202	Cataloging Unit	Upper Heart (ND)
10130203	Cataloging Unit	Lower Heart (ND)
10130204	Cataloging Unit	Upper Cannonball (ND)
10130205	Cataloging Unit	Cedar (ND,SD)
10130206	Cataloging Unit	Lower Cannonball (ND)
101303	Accounting Unit	The Grand and Moreau River Basins (ND,SD)
10130301	Cataloging Unit	North Fork Grand (ND,SD)
10130302	Cataloging Unit	South Fork Grand (SD)
10130303	Cataloging Unit	Grand (ND,SD)
10130304	Cataloging Unit	South Fork Moreau (SD)
10130305	Cataloging Unit	Upper Moreau (SD)
10130306	Cataloging Unit	Lower Moreau (SD)
1014	Subregion	Missouri-White (NE,SD)
101401	Accounting Unit	Fort Randall Reservoir (SD)
10140101	Cataloging Unit	Fort Randall Reservoir (SD)
10140102	Cataloging Unit	Bad (SD)
10140103	Cataloging Unit	Medicine Knoll (SD)
10140104	Cataloging Unit	Medicine (SD)
10140105	Cataloging Unit	Crow (SD)
101402	Accounting Unit	The White River Basin (NE,SD)
10140201	Cataloging Unit	Upper White (NE,SD)
10140202	Cataloging Unit	Middle White (SD)
10140203	Cataloging Unit	Little White (NE,SD)
10140204	Cataloging Unit	Lower White (SD)
1015	Subregion	The Niobrara River Basin (NE,SD,WY)
101500	Accounting Unit	Niobrara (NE,SD,WY)
10150001	Cataloging Unit	Ponca (NE,SD)
10150002	Cataloging Unit	Niobrara Headwaters (NE,WY)
10150003	Cataloging Unit	Upper Niobrara (NE,SD)
10150004	Cataloging Unit	Middle Niobrara (NE,SD)
10150005	Cataloging Unit	Snake (NE)
10150006	Cataloging Unit	Keya Paha (NE,SD)
10150007	Cataloging Unit	Lower Niobrara (NE)
1016	Subregion	The James River Basin (ND,SD)
101600	Accounting Unit	James (ND,SD)
10160001	Cataloging Unit	James Headwaters (ND)
10160002	Cataloging Unit	Pipestem (ND)
10160003	Cataloging Unit	Upper James (ND,SD)
10160004	Cataloging Unit	Elm (ND,SD)
10160005	Cataloging Unit	Mud (SD)
10160006	Cataloging Unit	Middle James (SD)
10160007	Cataloging Unit	East Missouri Coteau (SD)
10160008	Cataloging Unit	Snake (SD)
10160009	Cataloging Unit	Turtle (SD)
10160010	Cataloging Unit	North Big Sioux Coteau (SD)
10160011	Cataloging Unit	Lower James (SD)
1017	Subregion	Missouri-Big Sioux (IA,MN,NE,SD)
101701	Accounting Unit	Lewis and Clark Lake (NE,SD)
10170101	Cataloging Unit	Lewis and Clark Lake (NE,SD)
10170102	Cataloging Unit	Vermillion (SD)
10170103	Cataloging Unit	South Big Sioux Coteau (SD)
101702	Accounting Unit	The Big Sioux River Basin (IA,MN,SD)
10170201	Cataloging Unit	Middle Big Sioux Coteau (SD)
10170202	Cataloging Unit	Upper Big Sioux (MN,SD)
10170203	Cataloging Unit	Lower Big Sioux (IA,MN,SD)
10170204	Cataloging Unit	Rock (IA,MN)
1018	Subregion	The North Platte River Basin (CO,NE,WY)
101800	Accounting Unit	North Platte (CO,NE,WY)
10180001	Cataloging Unit	North Platte Headwaters (CO)
10180002	Cataloging Unit	Upper North Platte (CO,WY)
10180003	Cataloging Unit	Pathfinder-Seminoe Reservoirs (WY)
10180004	Cataloging Unit	Medicine Bow (WY)
10180005	Cataloging Unit	Little Medicine Bow (WY)
10180006	Cataloging Unit	Sweetwater (WY)
10180007	Cataloging Unit	Middle North Platte-Casper (WY)
10180008	Cataloging Unit	Glendo Reservoir (WY)
10180009	Cataloging Unit	Middle North Platte-Scotts Bluff (NE,WY)
10180010	Cataloging Unit	Upper Laramie (CO,WY)
10180011	Cataloging Unit	Lower Laramie (WY)
10180012	Cataloging Unit	Horse (NE,WY)
10180013	Cataloging Unit	Pumpkin (NE,WY)
10180014	Cataloging Unit	Lower North Platte (NE)
1019	Subregion	The South Platte River Basin (CO,NE,WY)
101900	Accounting Unit	South Platte (CO,NE,WY)
10190001	Cataloging Unit	South Platte Headwaters (CO)
10190002	Cataloging Unit	Upper South Platte (CO)
10190003	Cataloging Unit	Middle South Platte-Cherry Creek (CO)
10190004	Cataloging Unit	Clear (CO)
10190005	Cataloging Unit	St. Vrain (CO)
10190006	Cataloging Unit	Big Thompson (CO)
10190007	Cataloging Unit	Cache La Poudre (CO,WY)
10190008	Cataloging Unit	Lone Tree-Owl (CO,WY)
10190009	Cataloging Unit	Crow (CO,WY)
10190010	Cataloging Unit	Kiowa (CO)
10190011	Cataloging Unit	Bijou (CO)
10190012	Cataloging Unit	Middle South Platte-Sterling (CO,NE)
10190013	Cataloging Unit	Beaver (CO)
10190014	Cataloging Unit	Pawnee (CO)
10190015	Cataloging Unit	Upper Lodgepole (CO,NE,WY)
10190016	Cataloging Unit	Lower Lodgepole (CO,NE,WY)
10190017	Cataloging Unit	Sidney Draw (CO,NE,WY)
10190018	Cataloging Unit	Lower South Platte (CO,NE)
1020	Subregion	The Platte River Basin (NE)
102001	Accounting Unit	Middle Platte (NE)
10200101	Cataloging Unit	Middle Platte-Buffalo (NE)
10200102	Cataloging Unit	Wood (NE)
10200103	Cataloging Unit	Middle Platte-Prairie (NE)
102002	Accounting Unit	Lower Platte (NE)
10200201	Cataloging Unit	Lower Platte-Shell (NE)
10200202	Cataloging Unit	Lower Platte (NE)
10200203	Cataloging Unit	Salt (NE)
1021	Subregion	The Loup River Basin (NE)
102100	Accounting Unit	Loup (NE)
10210001	Cataloging Unit	Upper Middle Loup (NE)
10210002	Cataloging Unit	Dismal (NE)
10210003	Cataloging Unit	Lower Middle Loup (NE)
10210004	Cataloging Unit	South Loup (NE)
10210005	Cataloging Unit	Mud (NE)
10210006	Cataloging Unit	Upper North Loup (NE)
10210007	Cataloging Unit	Lower North Loup (NE)
10210008	Cataloging Unit	Calamus (NE)
10210009	Cataloging Unit	Loup (NE)
10210010	Cataloging Unit	Cedar (NE)
1022	Subregion	The Elkhorn River Basin (NE)
102200	Accounting Unit	Elkhorn (NE)
10220001	Cataloging Unit	Upper Elkhorn (NE)
10220002	Cataloging Unit	North Fork Elkhorn (NE)
10220003	Cataloging Unit	Lower Elkhorn (NE)
10220004	Cataloging Unit	Logan (NE)
1023	Subregion	Missouri-Little Sioux (IA,MN,NE)
102300	Accounting Unit	Missouri-Little Sioux (IA,MN,NE)
10230001	Cataloging Unit	Blackbird-Soldier (IA,NE)
10230002	Cataloging Unit	Floyd (IA)
10230003	Cataloging Unit	Little Sioux (IA,MN)
10230004	Cataloging Unit	Monona-Harrison Ditch (IA)
10230005	Cataloging Unit	Maple (IA)
10230006	Cataloging Unit	Big Papillion-Mosquito (IA,NE)
10230007	Cataloging Unit	Boyer (IA)
1024	Subregion	Missouri-Nishnabotna (IA,KS,MO,NE)
102400	Accounting Unit	Missouri-Nishnabotna (IA,KS,MO,NE)
10240001	Cataloging Unit	Keg-Weeping Water (IA,MO,NE)
10240002	Cataloging Unit	West Nishnabotna (IA)
10240003	Cataloging Unit	East Nishnabotna (IA)
10240004	Cataloging Unit	Nishnabotna (IA,MO)
10240005	Cataloging Unit	Tarkio-Wolf (IA,KS,MO,NE)
10240006	Cataloging Unit	Little Nemaha (NE)
10240007	Cataloging Unit	South Fork Big Nemaha (KS,NE)
10240008	Cataloging Unit	Big Nemaha (KS,NE)
10240009	Cataloging Unit	West Nodaway (IA)
10240010	Cataloging Unit	Nodaway (IA,MO)
10240011	Cataloging Unit	Independence-Sugar (KS,MO)
10240012	Cataloging Unit	Platte (IA,MO)
10240013	Cataloging Unit	One Hundred and Two (IA,MO)
1025	Subregion	The Republican River Basin (CO,KS,NE)
102500	Accounting Unit	Republican (CO,KS,NE)
10250001	Cataloging Unit	Arikaree (CO,KS,NE)
10250002	Cataloging Unit	North Fork Republican (CO,KS,NE)
10250003	Cataloging Unit	South Fork Republican (CO,KS,NE)
10250004	Cataloging Unit	Upper Republican (CO,KS,NE)
10250005	Cataloging Unit	Frenchman (CO,NE)
10250006	Cataloging Unit	Stinking Water (CO,NE)
10250007	Cataloging Unit	Red Willow (NE)
10250008	Cataloging Unit	Medicine (NE)
10250009	Cataloging Unit	Harlan County Reservoir (KS,NE)
10250010	Cataloging Unit	Upper Sappa (KS)
10250011	Cataloging Unit	Lower Sappa (KS,NE)
10250012	Cataloging Unit	South Fork Beaver (CO,KS)
10250013	Cataloging Unit	Little Beaver (CO,KS)
10250014	Cataloging Unit	Beaver (KS,NE)
10250015	Cataloging Unit	Prairie Dog (KS,NE)
10250016	Cataloging Unit	Middle Republican (KS,NE)
10250017	Cataloging Unit	Lower Republican (KS)
1026	Subregion	The Smoky Hill River Basin (CO,KS)
102600	Accounting Unit	Smoky Hill (CO,KS)
10260001	Cataloging Unit	Smoky Hill Headwaters (CO,KS)
10260002	Cataloging Unit	North Fork Smoky Hill (CO,KS)
10260003	Cataloging Unit	Upper Smoky Hill (KS)
10260004	Cataloging Unit	Ladder (CO,KS)
10260005	Cataloging Unit	Hackberry (KS)
10260006	Cataloging Unit	Middle Smoky Hill (KS)
10260007	Cataloging Unit	Big (KS)
10260008	Cataloging Unit	Lower Smoky Hill (KS)
10260009	Cataloging Unit	Upper Saline (KS)
10260010	Cataloging Unit	Lower Saline (KS)
10260011	Cataloging Unit	Upper North Fork Solomon (KS)
10260012	Cataloging Unit	Lower North Fork Solomon (KS)
10260013	Cataloging Unit	Upper South Fork Solomon (KS)
10260014	Cataloging Unit	Lower South Fork Solomon (KS)
10260015	Cataloging Unit	Solomon (KS)
1027	Subregion	The Kansas River Basin (KS,MO,NE)
102701	Accounting Unit	The Kansas River Basin (KS,MO)
10270101	Cataloging Unit	Upper Kansas (KS)
10270102	Cataloging Unit	Middle Kansas (KS)
10270103	Cataloging Unit	Delaware (KS)
10270104	Cataloging Unit	Lower Kansas (KS,MO)
102702	Accounting Unit	The Big Blue River Basin (KS,NE)
10270201	Cataloging Unit	Upper Big Blue (NE)
10270202	Cataloging Unit	Middle Big Blue (NE)
10270203	Cataloging Unit	West Fork Big Blue (NE)
10270204	Cataloging Unit	Turkey (NE)
10270205	Cataloging Unit	Lower Big Blue (KS,NE)
10270206	Cataloging Unit	Upper Little Blue (KS,NE)
10270207	Cataloging Unit	Lower Little Blue (KS,NE)
1028	Subregion	The Chariton, Grand, and Little Chariton River Basins (IA,MO)
102801	Accounting Unit	The Grand River Basin (IA,MO)
10280101	Cataloging Unit	Upper Grand (IA,MO)
10280102	Cataloging Unit	Thompson (IA,MO)
10280103	Cataloging Unit	Lower Grand (IA,MO)
102802	Accounting Unit	The Chariton and Little Chariton River Basins (IA,MO)
10280201	Cataloging Unit	Upper Chariton (IA,MO)
10280202	Cataloging Unit	Lower Chariton (MO)
10280203	Cataloging Unit	Little Chariton (MO)
1029	Subregion	The Gasconade and Osage River Basins (KS,MO)
102901	Accounting Unit	The Osage River Basin (KS,MO)
10290101	Cataloging Unit	Upper Marais Des Cygnes (KS)
10290102	Cataloging Unit	Lower Marais Des Cygnes (KS,MO)
10290103	Cataloging Unit	Little Osage (KS,MO)
10290104	Cataloging Unit	Marmaton (KS,MO)
10290105	Cataloging Unit	Harry S. Truman Reservoir (MO)
10290106	Cataloging Unit	Sac (MO)
10290107	Cataloging Unit	Pomme De Terre (MO)
10290108	Cataloging Unit	South Grand (KS,MO)
10290109	Cataloging Unit	Lake Of The Ozarks (MO)
10290110	Cataloging Unit	Niangua (MO)
10290111	Cataloging Unit	Lower Osage (MO)
102902	Accounting Unit	The Gasconade River Basin (MO)
10290201	Cataloging Unit	Upper Gasconade (MO)
10290202	Cataloging Unit	Big Piney (MO)
10290203	Cataloging Unit	Lower Gasconade (MO)
1030	Subregion	The Missouri River Basin (KS,MO)
103001	Accounting Unit	Lower Missouri-Blackwater (KS,MO)
10300101	Cataloging Unit	Lower Missouri-Crooked (KS,MO)
10300102	Cataloging Unit	Lower Missouri-Moreau (MO)
10300103	Cataloging Unit	Lamine (MO)
10300104	Cataloging Unit	Blackwater (MO)
103002	Accounting Unit	Lower Missouri (MO)
10300200	Cataloging Unit	Lower Missouri (MO)
11 	Region	Arkansas-White-Red Region (AR,CO,KS,LA,MO,NM,OK,TX)
1101	Subregion	The White River Basin (AR,MO)
110100	Accounting Unit	Upper White (AR,MO)
11010001	Cataloging Unit	Beaver Reservoir (AR,MO)
11010002	Cataloging Unit	James (MO)
11010003	Cataloging Unit	Bull Shoals Lake (AR,MO)
11010004	Cataloging Unit	Middle White (AR)
11010005	Cataloging Unit	Buffalo (AR)
11010006	Cataloging Unit	North Fork White (AR,MO)
11010007	Cataloging Unit	Upper Black (AR,MO)
11010008	Cataloging Unit	Current (AR,MO)
11010009	Cataloging Unit	Lower Black (AR,MO)
11010010	Cataloging Unit	Spring (AR,MO)
11010011	Cataloging Unit	Eleven Point (AR,MO)
11010012	Cataloging Unit	Strawberry (AR)
11010013	Cataloging Unit	Upper White-Village (AR)
11010014	Cataloging Unit	Little Red (AR)
1102	Subregion	The Arkansas River Basin (CO,KS,NM)
110200	Accounting Unit	Upper Arkansas (CO,KS,NM)
11020001	Cataloging Unit	Arkansas Headwaters (CO)
11020002	Cataloging Unit	Upper Arkansas (CO)
11020003	Cataloging Unit	Fountain (CO)
11020004	Cataloging Unit	Chico (CO)
11020005	Cataloging Unit	Upper Arkansas-Lake Meredith (CO)
11020006	Cataloging Unit	Huerfano (CO)
11020007	Cataloging Unit	Apishapa (CO)
11020008	Cataloging Unit	Horse (CO)
11020009	Cataloging Unit	Upper Arkansas-John Martin Reservoir (CO,KS)
11020010	Cataloging Unit	Purgatoire (CO,NM)
11020011	Cataloging Unit	Big Sandy (CO)
11020012	Cataloging Unit	Rush (CO)
11020013	Cataloging Unit	Two Butte (CO)
1103	Subregion	The Arkansas River Basin (CO,KS)
110300	Accounting Unit	Middle Arkansas (CO,KS)
11030001	Cataloging Unit	Middle Arkansas-Lake Mckinney (CO,KS)
11030002	Cataloging Unit	Whitewoman (CO,KS)
11030003	Cataloging Unit	Arkansas-Dodge City (KS)
11030004	Cataloging Unit	Coon-Pickerel (KS)
11030005	Cataloging Unit	Pawnee (KS)
11030006	Cataloging Unit	Buckner (KS)
11030007	Cataloging Unit	Upper Walnut Creek (KS)
11030008	Cataloging Unit	Lower Walnut Creek (KS)
11030009	Cataloging Unit	Rattlesnake (KS)
11030010	Cataloging Unit	Gar-Peace (KS)
11030011	Cataloging Unit	Cow (KS)
11030012	Cataloging Unit	Little Arkansas (KS)
11030013	Cataloging Unit	Middle Arkansas-Slate (KS0
11030014	Cataloging Unit	North Fork Ninnescah (KS)
11030015	Cataloging Unit	South Fork Ninnescah (KS)
11030016	Cataloging Unit	Ninnescah (KS)
11030017	Cataloging Unit	Upper Walnut River (KS)
11030018	Cataloging Unit	Lower Walnut River (KS)
1104	Subregion	The Cimarron River Basin (CO,KS,NM,OK)
110400	Accounting Unit	Upper Cimarron (CO,KS,NM,OK)
11040001	Cataloging Unit	Cimarron Headwaters (CO,NM,OK)
11040002	Cataloging Unit	Upper Cimarron (CO,KS,NM,OK)
11040003	Cataloging Unit	North Fork Cimarron (CO,KS)
11040004	Cataloging Unit	Sand Arroyo (CO,KS)
11040005	Cataloging Unit	Bear (CO,KS)
11040006	Cataloging Unit	Upper Cimarron-Liberal (KS,OK)
11040007	Cataloging Unit	Crooked (KS,OK)
11040008	Cataloging Unit	Upper Cimarron-Bluff (KS,OK)
1105	Subregion	The Cimarron River Basin (KS,OK)
110500	Accounting Unit	Lower Cimarron (KS,OK)
11050001	Cataloging Unit	Lower Cimarron-Eagle Chief (KS,OK)
11050002	Cataloging Unit	Lower Cimarron-Skeleton (OK)
11050003	Cataloging Unit	Lower Cimarron (OK)
1106	Subregion	Arkansas-Keystone (KS,OK)
110600	Accounting Unit	Arkansas-Keystone (KS,OK)
11060001	Cataloging Unit	Kaw Lake (KS,OK)
11060002	Cataloging Unit	Upper Salt Fork Arkansas (KS,OK)
11060003	Cataloging Unit	Medicine Lodge (KS,OK)
11060004	Cataloging Unit	Lower Salt Fork Arkansas (KS,OK)
11060005	Cataloging Unit	Chikaskia (KS,OK)
11060006	Cataloging Unit	Black Bear-Red Rock (OK)
1107	Subregion	The Neosho and Verdigris River Basins (AR,KS,MO,OK)
110701	Accounting Unit	The Verdigris River Basin (KS,OK)
11070101	Cataloging Unit	Upper Verdigris (KS)
11070102	Cataloging Unit	Fall (KS)
11070103	Cataloging Unit	Middle Verdigris (KS,OK)
11070104	Cataloging Unit	Elk (KS)
11070105	Cataloging Unit	Lower Verdigris (OK)
11070106	Cataloging Unit	Caney (KS,OK)
11070107	Cataloging Unit	Bird (OK)
110702	Accounting Unit	The Neosho River Basin (AR,KS,MO,OK)
11070201	Cataloging Unit	Neosho Headwaters (KS)
11070202	Cataloging Unit	Upper Cottonwood (KS)
11070203	Cataloging Unit	Lower Cottonwood (KS)
11070204	Cataloging Unit	Upper Neosho (KS)
11070205	Cataloging Unit	Middle Neosho (KS,OK)
11070206	Cataloging Unit	Lake O' The Cherokees (AR,KS,MO,OK)
11070207	Cataloging Unit	Spring (KS,MO,OK)
11070208	Cataloging Unit	Elk (AR,MO,OK)
11070209	Cataloging Unit	Lower Neosho (AR,OK)
1108	Subregion	Upper Canadian (CO,NM,TX)
110800	Accounting Unit	Upper Canadian (CO,NM,TX)
11080001	Cataloging Unit	Canadian Headwaters (CO,NM)
11080002	Cataloging Unit	Cimarron (NM)
11080003	Cataloging Unit	Upper Canadian (NM)
11080004	Cataloging Unit	Mora (NM)
11080005	Cataloging Unit	Conchas (NM)
11080006	Cataloging Unit	Upper Canadian-Ute Reservoir (NM,TX)
11080007	Cataloging Unit	Ute (NM)
11080008	Cataloging Unit	Revuelto (NM)
1109	Subregion	Lower Canadian (NM,OK,TX)
110901	Accounting Unit	Middle Canadian (NM,OK,TX)
11090101	Cataloging Unit	Middle Canadian-Trujillo (NM,TX)
11090102	Cataloging Unit	Punta De Agua (NM,TX)
11090103	Cataloging Unit	Rita Blanca (NM,OK,TX)
11090104	Cataloging Unit	Carrizo (NM,TX)
11090105	Cataloging Unit	Lake Meredith (TX)
11090106	Cataloging Unit	Middle Canadian-Spring (TX)
110902	Accounting Unit	Lower Canadian (OK,TX)
11090201	Cataloging Unit	Lower Canadian-Deer (OK,TX)
11090202	Cataloging Unit	Lower Canadian-Walnut (OK)
11090203	Cataloging Unit	Little (OK)
11090204	Cataloging Unit	Lower Canadian (OK)
1110	Subregion	The North Canadian River Basin (KS,NM,OK,TX)
111001	Accounting Unit	The Beaver River Basin (KS,NM,OK,TX)
11100101	Cataloging Unit	Upper Beaver (NM,OK,TX)
11100102	Cataloging Unit	Middle Beaver (KS,OK)
11100103	Cataloging Unit	Coldwater (OK,TX)
11100104	Cataloging Unit	Palo Duro (OK,TX)
111002	Accounting Unit	Lower Beaver (OK,TX)
11100201	Cataloging Unit	Lower Beaver (OK,TX)
11100202	Cataloging Unit	Upper Wolf (TX)
11100203	Cataloging Unit	Lower Wolf (OK,TX)
111003	Accounting Unit	Lower North Canadian (OK)
11100301	Cataloging Unit	Middle North Canadian (OK)
11100302	Cataloging Unit	Lower North Canadian (OK)
11100303	Cataloging Unit	Deep Fork (OK)
1111	Subregion	The Arkansas River Basin (AR,OK)
111101	Accounting Unit	Robert S. Kerr Reservoir (AR,OK)
11110101	Cataloging Unit	Polecat-Snake (OK)
11110102	Cataloging Unit	Dirty-Greenleaf (OK)
11110103	Cataloging Unit	Illinois (AR,OK)
11110104	Cataloging Unit	Robert S. Kerr Reservoir (AR,OK)
11110105	Cataloging Unit	Poteau (AR,OK)
111102	Accounting Unit	Lower Arkansas-Fourche La Fave (AR)
11110201	Cataloging Unit	Frog-Mulberry (AR)
11110202	Cataloging Unit	Dardanelle Reservoir (AR)
11110203	Cataloging Unit	Lake Conway-Point Remove (AR)
11110204	Cataloging Unit	Petit Jean (AR)
11110205	Cataloging Unit	Cadron (AR)
11110206	Cataloging Unit	Fourche La Fave (AR)
11110207	Cataloging Unit	Lower Arkansas-Maumelle (AR)
1112	Subregion	Red Headwaters (NM,OK,TX)
111201	Accounting Unit	The Prairie Dog Town Fork Red River Basin (NM,OK,TX)
11120101	Cataloging Unit	Tierra Blanca (NM,TX)
11120102	Cataloging Unit	Palo Duro (NM,TX)
11120103	Cataloging Unit	Upper Prairie Dog Town Fork Red (TX)
11120104	Cataloging Unit	Tule (TX)
11120105	Cataloging Unit	Lower Prairie Dog Town Fork Red (OK,TX)
111202	Accounting Unit	The Salt Fork Red River Basin (OK,TX)
11120201	Cataloging Unit	Upper Salt Fork Red (TX)
11120202	Cataloging Unit	Lower Salt Fork Red (OK,TX)
111203	Accounting Unit	The North Fork Red River Basin (OK,TX)
11120301	Cataloging Unit	Upper North Fork Red (TX)
11120302	Cataloging Unit	Middle North Fork Red (OK,TX)
11120303	Cataloging Unit	Lower North Fork Red (OK)
11120304	Cataloging Unit	Elm Fork Red (OK,TX)
1113	Subregion	Red-Washita (OK,TX)
111301	Accounting Unit	Red-Pease (OK,TX)
11130101	Cataloging Unit	Groesbeck-Sandy (OK,TX)
11130102	Cataloging Unit	Blue-China (OK,TX)
11130103	Cataloging Unit	North Pease (TX)
11130104	Cataloging Unit	Middle Pease (TX)
11130105	Cataloging Unit	Pease (TX)
111302	Accounting Unit	Red-Lake Texoma (OK,TX)
11130201	Cataloging Unit	Farmers-Mud (OK,TX)
11130202	Cataloging Unit	Cache (OK)
11130203	Cataloging Unit	West Cache (OK)
11130204	Cataloging Unit	North Wichita (TX)
11130205	Cataloging Unit	South Wichita (TX)
11130206	Cataloging Unit	Wichita (TX)
11130207	Cataloging Unit	Southern Beaver (TX)
11130208	Cataloging Unit	Northern Beaver (OK)
11130209	Cataloging Unit	Little Wichita (TX)
11130210	Cataloging Unit	Lake Texoma (OK,TX)
111303	Accounting Unit	The Washita River Basin (OK)
11130301	Cataloging Unit	Washita Headwaters (OK,TX)
11130302	Cataloging Unit	Upper Washita (OK)
11130303	Cataloging Unit	Middle Washita (OK)
11130304	Cataloging Unit	Lower Washita (OK)
1114	Subregion	Red-Sulphur (AR,LA,OK,TX)
111401	Accounting Unit	Red-Little (AR,OK,TX)
11140101	Cataloging Unit	Bois D'Arc-Island (OK,TX)
11140102	Cataloging Unit	Blue (OK)
11140103	Cataloging Unit	Muddy Boggy (OK)
11140104	Cataloging Unit	Clear Boggy (OK)
11140105	Cataloging Unit	Kiamichi (AR,OK)
11140106	Cataloging Unit	Pecan-Waterhole (AR,OK,TX)
11140107	Cataloging Unit	Upper Little (OK)
11140108	Cataloging Unit	Mountain Fork (AR,OK)
11140109	Cataloging Unit	Lower Little (AR,OK)
111402	Accounting Unit	Red-Saline (AR,LA,TX
11140201	Cataloging Unit	Mckinney-Posten Bayous (AR,LA,TX)
11140202	Cataloging Unit	Middle Red-Coushatta (LA)
11140203	Cataloging Unit	Loggy Bayou (AR,LA)
11140204	Cataloging Unit	Red Chute (LA)
11140205	Cataloging Unit	Bodcau Bayou (AR,LA)
11140206	Cataloging Unit	Bayou Pierre (LA)
11140207	Cataloging Unit	Lower Red-Lake Iatt (LA)
11140208	Cataloging Unit	Saline Bayou (LA)
11140209	Cataloging Unit	Black Lake Bayou (LA)
111403	Accounting Unit	Big Cypress-Sulphur (AR,LA,TX)
11140301	Cataloging Unit	Sulphur Headwaters (TX)
11140302	Cataloging Unit	Lower Sulphur (AR,TX)
11140303	Cataloging Unit	White Oak Bayou (TX)
11140304	Cataloging Unit	Cross Bayou (AR,LA,TX)
11140305	Cataloging Unit	Lake O'The Pines (TX)
11140306	Cataloging Unit	Caddo Lake (LA,TX)
11140307	Cataloging Unit	Little Cypress (TX)
12 	Region	Texas-Gulf Region (LA,NM,TX)
1201	Subregion	The Sabine River Basin (LA,TX)
120100	Accounting Unit	Sabine (LA,TX)
12010001	Cataloging Unit	Upper Sabine (TX)
12010002	Cataloging Unit	Middle Sabine (LA,TX)
12010003	Cataloging Unit	Lake Fork (TX)
12010004	Cataloging Unit	Toledo Bend Reservoir (LA,TX)
12010005	Cataloging Unit	Lower Sabine (LA,TX)
1202	Subregion	The Neches River Basin (TX)
120200	Accounting Unit	Neches (TX)
12020001	Cataloging Unit	Upper Neches (TX)
12020002	Cataloging Unit	Middle Neches (TX)
12020003	Cataloging Unit	Lower Neches (TX)
12020004	Cataloging Unit	Upper Angelina (TX)
12020005	Cataloging Unit	Lower Angelina (TX)
12020006	Cataloging Unit	Village (TX)
12020007	Cataloging Unit	Pine Island Bayou (TX)
1203	Subregion	The Trinity River Basin (TX)
120301	Accounting Unit	Upper Trinity (TX)
12030101	Cataloging Unit	Upper West Fork Trinity (TX)
12030102	Cataloging Unit	Lower West Fork Trinity (TX)
12030103	Cataloging Unit	Elm Fork Trinity (TX)
12030104	Cataloging Unit	Denton (TX)
12030105	Cataloging Unit	Upper Trinity (TX)
12030106	Cataloging Unit	East Fork Trinity (TX)
12030107	Cataloging Unit	Cedar (TX)
12030108	Cataloging Unit	Richland (TX)
12030109	Cataloging Unit	Chambers (TX)
120302	Accounting Unit	Lower Trinity (TX)
12030201	Cataloging Unit	Lower Trinity-Tehuacana (TX)
12030202	Cataloging Unit	Lower Trinity-Kickapoo (TX)
12030203	Cataloging Unit	Lower Trinity (TX)
1204	Subregion	Galveston Bay-San Jacinto (LA,TX)
120401	Accounting Unit	The San Jacinto River Basin (TX)
12040101	Cataloging Unit	West Fork San Jacinto (TX)
12040102	Cataloging Unit	Spring (TX)
12040103	Cataloging Unit	East Fork San Jacinto (TX)
12040104	Cataloging Unit	Buffalo-San Jacinto (TX)
120402	Accounting Unit	Galveston Bay-Sabine Lake (LA,TX)
12040201	Cataloging Unit	Sabine Lake (LA,TX)
12040202	Cataloging Unit	East Galveston Bay (TX)
12040203	Cataloging Unit	North Galveston Bay (TX)
12040204	Cataloging Unit	West Galveston Bay (TX)
12040205	Cataloging Unit	Austin-Oyster (TX)
1205	Subregion	Brazos Headwaters (NM,TX)
120500	Accounting Unit	Brazos Headwaters (NM,TX)
12050001	Cataloging Unit	Yellow House Draw (NM,TX)
12050002	Cataloging Unit	Blackwater Draw (NM,TX)
12050003	Cataloging Unit	North Fork Double Mountain Fork Brazos (TX)
12050004	Cataloging Unit	Double Mountain Fork Brazos (TX)
12050005	Cataloging Unit	Running Water Draw (NM,TX)
12050006	Cataloging Unit	White (TX)
12050007	Cataloging Unit	Salt Fork Brazos (TX)
1206	Subregion	Middle Brazos (TX)
120601	Accounting Unit	Middle Brazos-Clear Fork (TX)
12060101	Cataloging Unit	Middle Brazos-Millers (TX)
12060102	Cataloging Unit	Upper Clear Fork Brazos (TX)
12060103	Cataloging Unit	Paint (TX)
12060104	Cataloging Unit	Lower Clear Fork Brazos (TX)
12060105	Cataloging Unit	Hubbard (TX)
120602	Accounting Unit	Middle Brazos-Bosque (TX)
12060201	Cataloging Unit	Middle Brazos-Palo Pinto (TX)
12060202	Cataloging Unit	Middle Brazos-Lake Whitney (TX)
12060203	Cataloging Unit	Bosque (TX)
12060204	Cataloging Unit	North Bosque (TX)
1207	Subregion	Lower Brazos (TX)
120701	Accounting Unit	Lower Brazos (TX)
12070101	Cataloging Unit	Lower Brazos-Little Brazos (TX)
12070102	Cataloging Unit	Yegua (TX)
12070103	Cataloging Unit	Navasota (TX)
12070104	Cataloging Unit	Lower Brazos (TX)
120702	Accounting Unit	The Little River Basin (TX)
12070201	Cataloging Unit	Leon (TX)
12070202	Cataloging Unit	Cowhouse (TX)
12070203	Cataloging Unit	Lampasas (TX)
12070204	Cataloging Unit	Little (TX)
12070205	Cataloging Unit	San Gabriel (TX)
1208	Subregion	The Colorado River Basin (NM,TX)
120800	Accounting Unit	Upper Colorado (NM,TX)
12080001	Cataloging Unit	Lost Draw (NM,TX)
12080002	Cataloging Unit	Colorado Headwaters (TX)
12080003	Cataloging Unit	Monument-Seminole Draws (NM,TX)
12080004	Cataloging Unit	Mustang Draw (NM,TX)
12080005	Cataloging Unit	Johnson Draw (TX)
12080006	Cataloging Unit	Sulphur Springs Draw (NM,TX)
12080007	Cataloging Unit	Beals (TX)
12080008	Cataloging Unit	Upper Colorado (TX)
1209	Subregion	Lower Colorado-San Bernard Coastal (TX)
120901	Accounting Unit	Middle Colorado-Concho (TX)
12090101	Cataloging Unit	Middle Colorado-Elm (TX)
12090102	Cataloging Unit	South Concho (TX)
12090103	Cataloging Unit	Middle Concho (TX)
12090104	Cataloging Unit	North Concho (TX)
12090105	Cataloging Unit	Concho (TX)
12090106	Cataloging Unit	Middle Colorado (TX)
12090107	Cataloging Unit	Pecan Bayou (TX)
12090108	Cataloging Unit	Jim Ned (TX)
12090109	Cataloging Unit	San Saba (TX)
12090110	Cataloging Unit	Brady (TX)
120902	Accounting Unit	Middle Colorado-Llano (TX)
12090201	Cataloging Unit	Buchanan-Lyndon B. Johnson Lakes (TX)
12090202	Cataloging Unit	North Llano (TX)
12090203	Cataloging Unit	South Llano (TX)
12090204	Cataloging Unit	Llano (TX)
12090205	Cataloging Unit	Austin-Travis Lakes (TX)
12090206	Cataloging Unit	Pedernales (TX)
120903	Accounting Unit	Lower Colorado (TX)
12090301	Cataloging Unit	Lower Colorado-Cummins (TX)
12090302	Cataloging Unit	Lower Colorado (TX)
120904	Accounting Unit	San Bernard Coastal (TX)
12090401	Cataloging Unit	San Bernard (TX)
12090402	Cataloging Unit	East Matagorda Bay (TX)
1210	Subregion	Central Texas Coastal (TX)
121001	Accounting Unit	The Lavaca River Basin (TX)
12100101	Cataloging Unit	Lavaca (TX)
12100102	Cataloging Unit	Navidad (TX)
121002	Accounting Unit	The Guadalupe River Basin (TX)
12100201	Cataloging Unit	Upper Guadalupe (TX)
12100202	Cataloging Unit	Middle Guadalupe (TX)
12100203	Cataloging Unit	San Marcos (TX)
12100204	Cataloging Unit	Lower Guadalupe (TX)
121003	Accounting Unit	The San Antonio River Basin (TX)
12100301	Cataloging Unit	Upper San Antonio (TX)
12100302	Cataloging Unit	Medina (TX)
12100303	Cataloging Unit	Lower San Antonio (TX)
12100304	Cataloging Unit	Cibolo (TX)
121004	Accounting Unit	Central Texas Coastal (TX)
12100401	Cataloging Unit	Central Matagorda Bay (TX)
12100402	Cataloging Unit	West Matagorda Bay (TX)
12100403	Cataloging Unit	East San Antonio Bay (TX)
12100404	Cataloging Unit	West San Antonio Bay (TX)
12100405	Cataloging Unit	Aransas Bay (TX)
12100406	Cataloging Unit	Mission (TX)
12100407	Cataloging Unit	Aransas (TX)
1211	Subregion	Nueces-Southwestern Texas Coastal (TX)
121101	Accounting Unit	The Nueces River Basin (TX)
12110101	Cataloging Unit	Nueces Headwaters (TX)
12110102	Cataloging Unit	West Nueces (TX)
12110103	Cataloging Unit	Upper Nueces (TX)
12110104	Cataloging Unit	Turkey (TX)
12110105	Cataloging Unit	Middle Nueces (TX)
12110106	Cataloging Unit	Upper Frio (TX)
12110107	Cataloging Unit	Hondo (TX)
12110108	Cataloging Unit	Lower Frio (TX)
12110109	Cataloging Unit	San Miguel (TX)
12110110	Cataloging Unit	Atascosa (TX)
12110111	Cataloging Unit	Lower Nueces (TX)
121102	Accounting Unit	Southwestern Texas Coastal (TX)
12110201	Cataloging Unit	North Corpus Christi Bay (TX)
12110202	Cataloging Unit	South Corpus Christi Bay (TX)
12110203	Cataloging Unit	North Laguna Madre (TX)
12110204	Cataloging Unit	San Fernando (TX)
12110205	Cataloging Unit	Baffin Bay (TX)
12110206	Cataloging Unit	Palo Blanco (TX)
12110207	Cataloging Unit	Central Laguna Madre (TX)
12110208	Cataloging Unit	South Laguna Madre (TX)
13 	Region	Rio Grande Region (CO,NM,TX)
1301	Subregion	Rio Grande Headwaters (CO,NM)
130100	Accounting Unit	Rio Grande Headwaters (CO,NM)
13010001	Cataloging Unit	Rio Grande Headwaters (CO)
13010002	Cataloging Unit	Alamosa-Trinchera (CO,NM)
13010003	Cataloging Unit	San Luis (CO)
13010004	Cataloging Unit	Saguache (CO)
13010005	Cataloging Unit	Conejos (CO,NM)
1302	Subregion	Rio Grande-Elephant Butte (CO,NM)
130201	Accounting Unit	Upper Rio Grande (CO,NM)
13020101	Cataloging Unit	Upper Rio Grande (CO,NM)
13020102	Cataloging Unit	Rio Chama (CO,NM)
130202	Accounting Unit	Rio Grande-Elephant Butte (NM)
13020201	Cataloging Unit	Rio Grande-Santa Fe (NM)
13020202	Cataloging Unit	Jemez (NM)
13020203	Cataloging Unit	Rio Grande-Albuquerque (NM)
13020204	Cataloging Unit	Rio Puerco (NM)
13020205	Cataloging Unit	Arroyo Chico (NM)
13020206	Cataloging Unit	North Plains (NM)
13020207	Cataloging Unit	Rio San Jose (NM
13020208	Cataloging Unit	Plains of San Agustin (NM)
13020209	Cataloging Unit	Rio Salado (NM)
13020210	Cataloging Unit	Jornada Del Muerto (NM)
13020211	Cataloging Unit	Elephant Butte Reservoir (NM)
1303	Subregion	Rio Grande-Mimbres (NM,TX)
130301	Accounting Unit	Rio Grande-Caballo (NM,TX)
13030101	Cataloging Unit	Caballo (NM)
13030102	Cataloging Unit	El Paso-Las Cruces (NM,TX)
13030103	Cataloging Unit	Jornada Draw (NM)
130302	Accounting Unit	Mimbres (NM)
13030201	Cataloging Unit	Playas Lake (NM)
13030202	Cataloging Unit	Mimbres (NM)
1304	Subregion	Rio Grande-Amistad (TX)
130401	Accounting Unit	Rio Grande-Fort Quitman (TX)
13040100	Cataloging Unit	Rio Grande-Fort Quitman (TX)
130402	Accounting Unit	Rio Grande-Amistad (TX)
13040201	Cataloging Unit	Cibolo-Red Light (TX)
13040202	Cataloging Unit	Alamito (TX)
13040203	Cataloging Unit	Black Hills-Fresno (TX)
13040204	Cataloging Unit	Terlingua (TX)
13040205	Cataloging Unit	Big Bend (TX)
13040206	Cataloging Unit	Maravillas (TX)
13040207	Cataloging Unit	Santiago Draw (TX)
13040208	Cataloging Unit	Reagan-Sanderson (TX)
13040209	Cataloging Unit	San Francisco (TX)
13040210	Cataloging Unit	Lozier Canyon (TX)
13040211	Cataloging Unit	Big Canyon (TX)
13040212	Cataloging Unit	Amistad Reservoir (TX)
130403	Accounting Unit	The Devils River Basin (TX)
13040301	Cataloging Unit	Upper Devils (TX)
13040302	Cataloging Unit	Lower Devils (TX)
13040303	Cataloging Unit	Dry Devils (TX)
1305	Subregion	Rio Grande Closed Basins (NM,TX)
130500	Accounting Unit	Rio Grande Closed Basins (NM,TX)
13050001	Cataloging Unit	Western Estancia (NM)
13050002	Cataloging Unit	Eastern Estancia (NM)
13050003	Cataloging Unit	Tularosa Valley (NM,TX)
13050004	Cataloging Unit	Salt Basin (NM,TX)
1306	Subregion	The Pecos River Basin (NM,TX)
130600	Accounting Unit	Upper Pecos (NM,TX)
13060001	Cataloging Unit	Pecos Headwaters (NM)
13060002	Cataloging Unit	Pintada Arroyo (NM)
13060003	Cataloging Unit	Upper Pecos (NM)
13060004	Cataloging Unit	Taiban (NM)
13060005	Cataloging Unit	Arroyo Del Macho (NM)
13060006	Cataloging Unit	Gallo Arroyo (NM)
13060007	Cataloging Unit	Upper Pecos-Long Arroyo (NM)
13060008	Cataloging Unit	Rio Hondo (NM)
13060009	Cataloging Unit	Rio Felix (NM)
13060010	Cataloging Unit	Rio Penasco (NM)
13060011	Cataloging Unit	Upper Pecos-Black (NM,TX)
1307	Subregion	Lower Pecos (NM,TX)
130700	Accounting Unit	Lower Pecos (NM,TX)
13070001	Cataloging Unit	Lower Pecos-Red Bluff Reservoir (NM,TX)
13070002	Cataloging Unit	Delaware (NM,TX)
13070003	Cataloging Unit	Toyah (TX)
13070004	Cataloging Unit	Salt Draw (TX)
13070005	Cataloging Unit	Barrilla Draw (TX)
13070006	Cataloging Unit	Coyanosa-Hackberry Draws (TX)
13070007	Cataloging Unit	Landreth-Monument Draws (NM,TX)
13070008	Cataloging Unit	Lower Pecos (TX)
13070009	Cataloging Unit	Tunas (TX)
13070010	Cataloging Unit	Independence (TX)
13070011	Cataloging Unit	Howard Draw (TX)
1308	Subregion	Rio Grande-Falcon (TX)
130800	Accounting Unit	Rio Grande-Falcon (TX)
13080001	Cataloging Unit	Elm-Sycamore (TX)
13080002	Cataloging Unit	San Ambrosia-Santa Isabel (TX)
13080003	Cataloging Unit	International Falcon Reservoir (TX)
1309	Subregion	Lower Rio Grande (TX)
130900	Accounting Unit	Lower Rio Grande (TX)
13090001	Cataloging Unit	Los Olmos (TX)
13090002	Cataloging Unit	Lower Rio Grande (TX)
14 	Region	Upper Colorado Region (AZ,CO,NM,UT,WY)
1401	Subregion	Colorado Headwaters (CO,UT)
140100	Accounting Unit	Colorado Headwaters (CO,UT)
14010001	Cataloging Unit	Colorado Headwaters (CO)
14010002	Cataloging Unit	Blue (CO)
14010003	Cataloging Unit	Eagle (CO)
14010004	Cataloging Unit	Roaring Fork (CO)
14010005	Cataloging Unit	Colorado Headwaters-Plateau (CO,UT)
14010006	Cataloging Unit	Parachute-Roan (CO)
1402	Subregion	The Gunnison River Basin (CO)
140200	Accounting Unit	Gunnison (CO)
14020001	Cataloging Unit	East-Taylor (CO)
14020002	Cataloging Unit	Upper Gunnison (CO)
14020003	Cataloging Unit	Tomichi (CO)
14020004	Cataloging Unit	North Fork Gunnison (CO)
14020005	Cataloging Unit	Lower Gunnison (CO)
14020006	Cataloging Unit	Uncompahgre (CO)
1403	Subregion	Upper Colorado-Dolores (CO,UT)
140300	Accounting Unit	Upper Colorado-Dolores (CO,UT)
14030001	Cataloging Unit	Westwater Canyon (CO,UT)
14030002	Cataloging Unit	Upper Dolores (CO,UT)
14030003	Cataloging Unit	San Miguel (CO)
14030004	Cataloging Unit	Lower Dolores (CO,UT)
14030005	Cataloging Unit	Upper Colorado-Kane Springs (CO,UT)
1404	Subregion	Great Divide-Upper Green (CO,UT,WY)
140401	Accounting Unit	The Green River Basin (CO,UT,WY)
14040101	Cataloging Unit	Upper Green (WY)
14040102	Cataloging Unit	New Fork (WY)
14040103	Cataloging Unit	Upper Green-Slate (WY)
14040104	Cataloging Unit	Big Sandy (WY)
14040105	Cataloging Unit	Bitter (WY)
14040106	Cataloging Unit	Upper Green-Flaming Gorge Reservoir (CO,UT,WY)
14040107	Cataloging Unit	Blacks Fork (UT,WY)
14040108	Cataloging Unit	Muddy (UT,WY)
14040109	Cataloging Unit	Vermilion (CO,WY)
140402	Accounting Unit	The Great Divide Closed Basin (WY)
14040200	Cataloging Unit	Great Divide Closed Basin (WY)
1405	Subregion	The White and Yampa River Basins (CO,UT,WY)
140500	Accounting Unit	White-Yampa (CO,UT,WY)
14050001	Cataloging Unit	Upper Yampa (CO)
14050002	Cataloging Unit	Lower Yampa (CO)
14050003	Cataloging Unit	Little Snake (CO,WY)
14050004	Cataloging Unit	Muddy (WY)
14050005	Cataloging Unit	Upper White (CO)
14050006	Cataloging Unit	Piceance-Yellow (CO)
14050007	Cataloging Unit	Lower White (CO,UT)
1406	Subregion	The Green River Basin (CO,UT)
140600	Accounting Unit	Lower Green (CO,UT)
14060001	Cataloging Unit	Lower Green-Diamond (CO,UT)
14060002	Cataloging Unit	Ashley-Brush (UT)
14060003	Cataloging Unit	Duchesne (UT)
14060004	Cataloging Unit	Strawberry (UT)
14060005	Cataloging Unit	Lower Green-Desolation Canyon (UT)
14060006	Cataloging Unit	Willow (UT)
14060007	Cataloging Unit	Price (UT)
14060008	Cataloging Unit	Lower Green (UT)
14060009	Cataloging Unit	San Rafael (UT)
1407	Subregion	Upper Colorado-Dirty Devil (AZ,UT)
140700	Accounting Unit	Upper Colorado-Dirty Devil (AZ,UT)
14070001	Cataloging Unit	Upper Lake Powell (UT)
14070002	Cataloging Unit	Muddy (UT)
14070003	Cataloging Unit	Fremont (UT)
14070004	Cataloging Unit	Dirty Devil (UT)
14070005	Cataloging Unit	Escalante (UT)
14070006	Cataloging Unit	Lower Lake Powell (AZ,UT)
14070007	Cataloging Unit	Paria (AZ,UT)
1408	Subregion	The San Juan River Basin (AZ,CO,NM,UT)
140801	Accounting Unit	Upper San Juan (AZ,CO,NM)
14080101	Cataloging Unit	Upper San Juan (CO,NM)
14080102	Cataloging Unit	Piedra (CO)
14080103	Cataloging Unit	Blanco Canyon (NM)
14080104	Cataloging Unit	Animas (CO,NM)
14080105	Cataloging Unit	Middle San Juan (AZ,CO,NM)
14080106	Cataloging Unit	Chaco (AZ,NM)
14080107	Cataloging Unit	Mancos (CO,NM)
140802	Accounting Unit	Lower San Juan (AZ,CO,NM,UT)
14080201	Cataloging Unit	Lower San Juan-Four Corners (AZ,CO,NM,UT)
14080202	Cataloging Unit	Mcelmo (CO,UT)
14080203	Cataloging Unit	Montezuma (CO,UT)
14080204	Cataloging Unit	Chinle (AZ,NM,UT)
14080205	Cataloging Unit	Lower San Juan (AZ,UT)
15 	Region	Lower Colorado Region (AZ,CA,NV,NM,UT)
1501	Subregion	Lower Colorado-Lake Mead (AZ,NV,UT)
150100	Accounting Unit	Lower Colorado-Lake Mead (AZ,NV,UT)
15010001	Cataloging Unit	Lower Colorado-Marble Canyon (AZ)
15010002	Cataloging Unit	Grand Canyon (AZ)
15010003	Cataloging Unit	Kanab (AZ,UT)
15010004	Cataloging Unit	Havasu Canyon (AZ)
15010005	Cataloging Unit	Lake Mead (AZ,NV)
15010006	Cataloging Unit	Grand Wash (AZ,NV)
15010007	Cataloging Unit	Hualapai Wash (AZ)
15010008	Cataloging Unit	Upper Virgin (UT)
15010009	Cataloging Unit	Fort Pierce Wash (AZ,UT)
15010010	Cataloging Unit	Lower Virgin (AZ,NV,UT)
15010011	Cataloging Unit	White (NV)
15010012	Cataloging Unit	Muddy (NV)
15010013	Cataloging Unit	Meadow Valley Wash (NV,UT)
15010014	Cataloging Unit	Detrital Wash (AZ)
15010015	Cataloging Unit	Las Vegas Wash (NV)
1502	Subregion	The Little Colorado River Basin (AZ,NM)
150200	Accounting Unit	Little Colorado (AZ,NM)
15020001	Cataloging Unit	Little Colorado Headwaters (AZ,NM)
15020002	Cataloging Unit	Upper Little Colorado (AZ,NM)
15020003	Cataloging Unit	Carrizo Wash (AZ,NM)
15020004	Cataloging Unit	Zuni (AZ,NM)
15020005	Cataloging Unit	Silver (AZ)
15020006	Cataloging Unit	Upper Puerco (AZ,NM)
15020007	Cataloging Unit	Lower Puerco (AZ)
15020008	Cataloging Unit	Middle Little Colorado (AZ)
15020009	Cataloging Unit	Leroux Wash (AZ)
15020010	Cataloging Unit	Chevelon Canyon (AZ)
15020011	Cataloging Unit	Cottonwood Wash (AZ)
15020012	Cataloging Unit	Corn-Oraibi (AZ)
15020013	Cataloging Unit	Polacca Wash (AZ)
15020014	Cataloging Unit	Jadito Wash (AZ)
15020015	Cataloging Unit	Canyon Diablo (AZ)
15020016	Cataloging Unit	Lower Little Colorado (AZ)
15020017	Cataloging Unit	Dinnebito Wash (AZ)
15020018	Cataloging Unit	Moenkopi Wash (AZ)
1503	Subregion	Lower Colorado (AZ,CA,NV)
150301	Accounting Unit	Lower Colorado (AZ,CA,NV)
15030101	Cataloging Unit	Havasu-Mohave Lake (AZ,CA,NV)
15030102	Cataloging Unit	Piute Wash (CA,NV)
15030103	Cataloging Unit	Sacramento Wash (AZ)
15030104	Cataloging Unit	Imperial Reservoir (AZ,CA)
15030105	Cataloging Unit	Bouse Wash (AZ)
15030106	Cataloging Unit	Tyson Wash (AZ)
15030107	Cataloging Unit	Lower Colorado (AZ,CA)
15030108	Cataloging Unit	Yuma Desert (AZ)
150302	Accounting Unit	The Bill Williams River Basin (AZ)
15030201	Cataloging Unit	Big Sandy (AZ)
15030202	Cataloging Unit	Burro (AZ)
15030203	Cataloging Unit	Santa Maria (AZ)
15030204	Cataloging Unit	Bill Williams (AZ)
1504	Subregion	The Gila River Basin (AZ,NM)
150400	Accounting Unit	Upper Gila (AZ,NM)
15040001	Cataloging Unit	Upper Gila (NM)
15040002	Cataloging Unit	Upper Gila-Mangas (AZ,NM)
15040003	Cataloging Unit	Animas Valley (AZ,NM)
15040004	Cataloging Unit	San Francisco (AZ,NM)
15040005	Cataloging Unit	Upper Gila-San Carlos Reservoir (AZ)
15040006	Cataloging Unit	San Simon (AZ,NM)
15040007	Cataloging Unit	San Carlos (AZ)
1505	Subregion	The Gila River Basin (AZ)
150501	Accounting Unit	Middle Gila (AZ)
15050100	Cataloging Unit	Middle Gila (AZ)
150502	Accounting Unit	San Pedro-Willcox (AZ)
15050201	Cataloging Unit	Willcox Playa (AZ)
15050202	Cataloging Unit	Upper San Pedro (AZ)
15050203	Cataloging Unit	Lower San Pedro (AZ)
150503	Accounting Unit	The Santa Cruz River Basin (AZ)
15050301	Cataloging Unit	Upper Santa Cruz (AZ)
15050302	Cataloging Unit	Rillito (AZ)
15050303	Cataloging Unit	Lower Santa Cruz (AZ)
15050304	Cataloging Unit	Brawley Wash (AZ)
15050305	Cataloging Unit	Aguirre Valley (AZ)
15050306	Cataloging Unit	Santa Rosa Wash (AZ)
1506	Subregion	The Salt River Basin (AZ)
150601	Accounting Unit	The Salt River Basin (AZ)
15060101	Cataloging Unit	Black (AZ)
15060102	Cataloging Unit	White (AZ)
15060103	Cataloging Unit	Upper Salt (AZ)
15060104	Cataloging Unit	Carrizo (AZ)
15060105	Cataloging Unit	Tonto (AZ)
15060106	Cataloging Unit	Lower Salt (AZ)
150602	Accounting Unit	The Verde River Basin (AZ)
15060201	Cataloging Unit	Big Chino-Williamson Valley (AZ)
15060202	Cataloging Unit	Upper Verde (AZ)
15060203	Cataloging Unit	Lower Verde (AZ)
1507	Subregion	The Gila River Basin (AZ)
150701	Accounting Unit	Lower Gila-Agua Fria (AZ)
15070101	Cataloging Unit	Lower Gila-Painted Rock Reservoir (AZ)
15070102	Cataloging Unit	Agua Fria (AZ)
15070103	Cataloging Unit	Hassayampa (AZ)
15070104	Cataloging Unit	Centennial Wash (AZ)
150702	Accounting Unit	Lower Gila (AZ)
15070201	Cataloging Unit	Lower Gila (AZ)
15070202	Cataloging Unit	Tenmile Wash (AZ)
15070203	Cataloging Unit	San Cristobal Wash (AZ)
1508	Subregion	Sonora (AZ,NM)
150801	Accounting Unit	Rio Sonoyta (AZ)
15080101	Cataloging Unit	San Simon Wash (AZ)
15080102	Cataloging Unit	Rio Sonoyta (AZ)
15080103	Cataloging Unit	Tule Desert (AZ)
150802	Accounting Unit	Rio De La Concepcion (AZ)
15080200	Cataloging Unit	Rio De La Concepcion (AZ)
150803	Accounting Unit	Rio De Bavispe (AZ,NM)
15080301	Cataloging Unit	Whitewater Draw (AZ)
15080302	Cataloging Unit	San Bernardino Valley (AZ,NM)
15080303	Cataloging Unit	Cloverdale (NM)
16 	Region	Great Basin Region (CA,ID,NV,OR,UT,WY)
1601	Subregion	The Bear River Basin (ID,UT,WY)
160101	Accounting Unit	Upper Bear (ID,UT,WY)
16010101	Cataloging Unit	Upper Bear (UT,WY)
16010102	Cataloging Unit	Central Bear (ID,UT,WY)
160102	Accounting Unit	Lower Bear (ID,UT)
16010201	Cataloging Unit	Bear Lake (ID,UT)
16010202	Cataloging Unit	Middle Bear (ID,UT)
16010203	Cataloging Unit	Little Bear-Logan (ID,UT)
16010204	Cataloging Unit	Lower Bear-Malad (ID,UT)
1602	Subregion	The Great Salt Lake Basin (ID,NV,UT,WY)
160201	Accounting Unit	The Weber River Basin (UT,WY)
16020101	Cataloging Unit	Upper Weber (UT,WY)
16020102	Cataloging Unit	Lower Weber (UT)
160202	Accounting Unit	The Jordan River Basin (UT)
16020201	Cataloging Unit	Utah Lake (UT)
16020202	Cataloging Unit	Spanish Fork (UT)
16020203	Cataloging Unit	Provo (UT)
16020204	Cataloging Unit	Jordan (UT)
160203	Accounting Unit	The Great Salt Lake Basin (ID,NV,UT)
16020301	Cataloging Unit	Hamlin-Snake Valleys (NV,UT)
16020302	Cataloging Unit	Pine Valley (UT)
16020303	Cataloging Unit	Tule Valley (UT)
16020304	Cataloging Unit	Rush-Tooele Valleys (UT)
16020305	Cataloging Unit	Skull Valley (UT)
16020306	Cataloging Unit	Southern Great Salt Lake Desert (NV,UT)
16020307	Cataloging Unit	Pilot-Thousand Springs (NV,UT)
16020308	Cataloging Unit	Northern Great Salt Lake Desert (NV,UT)
16020309	Cataloging Unit	Curlew Valley (ID,UT)
16020310	Cataloging Unit	Great Salt Lake (UT)
1603	Subregion	The Escalante Desert and The Sevier Lake Closed Basins (NV,UT)
160300	Accounting Unit	Escalante Desert-Sevier Lake (NV,UT)
16030001	Cataloging Unit	Upper Sevier (UT)
16030002	Cataloging Unit	East Fork Sevier (UT)
16030003	Cataloging Unit	Middle Sevier (UT)
16030004	Cataloging Unit	San Pitch (UT)
16030005	Cataloging Unit	Lower Sevier (UT)
16030006	Cataloging Unit	Escalante Desert (NV,UT)
16030007	Cataloging Unit	Beaver Bottoms-Upper Beaver (UT)
16030008	Cataloging Unit	Lower Beaver (UT)
16030009	Cataloging Unit	Sevier Lake (UT)
1604	Subregion	Black Rock Desert-Humboldt (CA,NV,OR)
160401	Accounting Unit	The Humboldt River Basin (NV)
16040101	Cataloging Unit	Upper Humboldt (NV)
16040102	Cataloging Unit	North Fork Humboldt (NV)
16040103	Cataloging Unit	South Fork Humboldt (NV)
16040104	Cataloging Unit	Pine (NV)
16040105	Cataloging Unit	Middle Humboldt (NV)
16040106	Cataloging Unit	Rock (NV)
16040107	Cataloging Unit	Reese (NV)
16040108	Cataloging Unit	Lower Humboldt (NV)
16040109	Cataloging Unit	Little Humboldt (NV)
160402	Accounting Unit	Black Rock Desert (CA,NV,OR)
16040201	Cataloging Unit	Upper Quinn (NV,OR)
16040202	Cataloging Unit	Lower Quinn (NV)
16040203	Cataloging Unit	Smoke Creek Desert (CA,NV)
16040204	Cataloging Unit	Massacre Lake (CA,NV)
16040205	Cataloging Unit	Thousand-Virgin (NV,OR)
1605	Subregion	Central Lahontan (CA,NV)
160501	Accounting Unit	The Truckee River Basin (CA,NV)
16050101	Cataloging Unit	Lake Tahoe (CA,NV)
16050102	Cataloging Unit	Truckee (CA,NV)
16050103	Cataloging Unit	Pyramid-Winnemucca Lakes (NV)
16050104	Cataloging Unit	Granite Springs Valley (NV)
160502	Accounting Unit	The Carson River Basin (CA,NV)
16050201	Cataloging Unit	Upper Carson (CA,NV)
16050202	Cataloging Unit	Middle Carson (NV)
16050203	Cataloging Unit	Carson Desert (NV)
160503	Accounting Unit	The Walker River Basin (CA,NV)
16050301	Cataloging Unit	East Walker (CA,NV)
16050302	Cataloging Unit	West Walker (CA,NV)
16050303	Cataloging Unit	Walker (NV)
16050304	Cataloging Unit	Walker Lake (NV)
1606	Subregion	Central Nevada Desert Basins (CA,NV)
160600	Accounting Unit	Central Nevada Desert Basins (CA,NV)
16060001	Cataloging Unit	Dixie Valley (NV)
16060002	Cataloging Unit	Gabbs Valley (NV)
16060003	Cataloging Unit	Southern Big Smoky Valley (NV)
16060004	Cataloging Unit	Northern Big Smoky Valley (NV)
16060005	Cataloging Unit	Diamond-Monitor Valleys (NV)
16060006	Cataloging Unit	Little Smoky-Newark Valleys (NV)
16060007	Cataloging Unit	Long-Ruby Valleys (NV)
16060008	Cataloging Unit	Spring-Steptoe Valleys (NV)
16060009	Cataloging Unit	Dry Lake Valley (NV)
16060010	Cataloging Unit	Fish Lake-Soda Spring Valleys (CA,NV)
16060011	Cataloging Unit	Ralston-Stone Cabin Valleys (NV)
16060012	Cataloging Unit	Hot Creek-Railroad Valleys (NV)
16060013	Cataloging Unit	Cactus-Sarcobatus Flats (NV)
16060014	Cataloging Unit	Sand Spring-Tikaboo Valleys (NV)
16060015	Cataloging Unit	Ivanpah-Pahrump Valleys (CA,NV)
17 	Region	Pacific Northwest Region (CA,ID,MT,NV,OR,UT,WA,WY)
1701	Subregion	The Kootenai, Pend Oreille, and Spokane River Basins (ID,MT,WA)
170101	Accounting Unit	The Kootenai River Basin (ID,MT)
17010101	Cataloging Unit	Upper Kootenai (ID,MT)
17010102	Cataloging Unit	Fisher (MT)
17010103	Cataloging Unit	Yaak (MT)
17010104	Cataloging Unit	Lower Kootenai (ID,MT)
17010105	Cataloging Unit	Moyie (ID,MT)
170102	Accounting Unit	The Pend Oreille River Basin (ID,MT,WA)
17010201	Cataloging Unit	Upper Clark Fork (MT)
17010202	Cataloging Unit	Flint-Rock (MT)
17010203	Cataloging Unit	Blackfoot (MT)
17010204	Cataloging Unit	Middle Clark Fork (MT)
17010205	Cataloging Unit	Bitterroot (MT)
17010206	Cataloging Unit	North Fork Flathead (MT)
17010207	Cataloging Unit	Middle Fork Flathead (MT)
17010208	Cataloging Unit	Flathead Lake (MT)
17010209	Cataloging Unit	South Fork Flathead (MT)
17010210	Cataloging Unit	Stillwater (MT)
17010211	Cataloging Unit	Swan (MT)
17010212	Cataloging Unit	Lower Flathead (MT)
17010213	Cataloging Unit	Lower Clark Fork (ID,MT)
17010214	Cataloging Unit	Pend Oreille Lake (ID,WA)
17010215	Cataloging Unit	Priest (ID,WA)
17010216	Cataloging Unit	Pend Oreille (ID,WA)
170103	Accounting Unit	The Spokane River Basin (ID,WA)
17010301	Cataloging Unit	Upper Coeur D'Alene (ID)
17010302	Cataloging Unit	South Fork Coeur D'Alene (ID)
17010303	Cataloging Unit	Coeur D'Alene Lake (ID,WA)
17010304	Cataloging Unit	St. Joe (ID)
17010305	Cataloging Unit	Upper Spokane (ID,WA)
17010306	Cataloging Unit	Hangman (ID,WA)
17010307	Cataloging Unit	Lower Spokane (WA)
17010308	Cataloging Unit	Little Spokane (ID,WA)
1702	Subregion	The Columbia River Basin (WA)
170200	Accounting Unit	Upper Columbia (WA)
17020001	Cataloging Unit	Franklin D. Roosevelt Lake (WA)
17020002	Cataloging Unit	Kettle (WA)
17020003	Cataloging Unit	Colville (WA)
17020004	Cataloging Unit	Sanpoil (WA)
17020005	Cataloging Unit	Chief Joseph (WA)
17020006	Cataloging Unit	Okanogan (WA)
17020007	Cataloging Unit	Similkameen (WA)
17020008	Cataloging Unit	Methow (WA)
17020009	Cataloging Unit	Lake Chelan (WA)
17020010	Cataloging Unit	Upper Columbia-Entiat (WA)
17020011	Cataloging Unit	Wenatchee (WA)
17020012	Cataloging Unit	Moses Coulee (WA)
17020013	Cataloging Unit	Upper Crab (WA)
17020014	Cataloging Unit	Banks Lake (WA)
17020015	Cataloging Unit	Lower Crab (WA)
17020016	Cataloging Unit	Upper Columbia-Priest Rapids (WA)
1703	Subregion	The Yakima River Basin (WA)
170300	Accounting Unit	Yakima (WA)
17030001	Cataloging Unit	Upper Yakima (WA)
17030002	Cataloging Unit	Naches (WA)
17030003	Cataloging Unit	Lower Yakima (WA)
1704	Subregion	The Snake River Basin (ID,NV,UT,WY)
170401	Accounting Unit	Snake Headwaters (ID,WY)
17040101	Cataloging Unit	Snake Headwaters (WY)
17040102	Cataloging Unit	Gros Ventre (WY)
17040103	Cataloging Unit	Greys-Hobock (WY)
17040104	Cataloging Unit	Palisades (ID,WY)
17040105	Cataloging Unit	Salt (ID,WY)
170402	Accounting Unit	Upper Snake (ID,NV,UT,WY)
17040201	Cataloging Unit	Idaho Falls (ID)
17040202	Cataloging Unit	Upper Henrys (ID,WY)
17040203	Cataloging Unit	Lower Henrys (ID,WY)
17040204	Cataloging Unit	Teton (ID,WY)
17040205	Cataloging Unit	Willow (ID)
17040206	Cataloging Unit	American Falls (ID)
17040207	Cataloging Unit	Blackfoot (ID)
17040208	Cataloging Unit	Portneuf (ID)
17040209	Cataloging Unit	Lake Walcott (ID)
17040210	Cataloging Unit	Raft (ID,UT)
17040211	Cataloging Unit	Goose (ID,NV,UT)
17040212	Cataloging Unit	Upper Snake-Rock (ID)
17040213	Cataloging Unit	Salmon Falls (ID,NV)
17040214	Cataloging Unit	Beaver-Camas (ID)
17040215	Cataloging Unit	Medicine Lodge (ID)
17040216	Cataloging Unit	Birch (ID)
17040217	Cataloging Unit	Little Lost (ID)
17040218	Cataloging Unit	Big Lost (ID)
17040219	Cataloging Unit	Big Wood (ID)
17040220	Cataloging Unit	Camas (ID)
17040221	Cataloging Unit	Little Wood (ID)
1705	Subregion	The Snake River Basin (ID,NV,OR)
170501	Accounting Unit	Middle Snake-Boise (ID,NV,OR)
17050101	Cataloging Unit	C. J. Strike Reservoir (ID)
17050102	Cataloging Unit	Bruneau (ID,NV)
17050103	Cataloging Unit	Middle Snake-Succor (ID,OR)
17050104	Cataloging Unit	Upper Owyhee (ID,NV)
17050105	Cataloging Unit	South Fork Owyhee (ID,NV,OR)
17050106	Cataloging Unit	East Little Owyhee (ID,NV,OR)
17050107	Cataloging Unit	Middle Owyhee (ID,NV,OR)
17050108	Cataloging Unit	Jordan (ID,OR)
17050109	Cataloging Unit	Crooked-Rattlesnake (OR)
17050110	Cataloging Unit	Lower Owyhee (OR)
17050111	Cataloging Unit	North and Middle Forks Boise (ID)
17050112	Cataloging Unit	Boise-Mores (ID)
17050113	Cataloging Unit	South Fork Boise (ID)
17050114	Cataloging Unit	Lower Boise (ID)
17050115	Cataloging Unit	Middle Snake-Payette (ID,OR)
17050116	Cataloging Unit	Upper Malheur (OR)
17050117	Cataloging Unit	Lower Malheur (OR)
17050118	Cataloging Unit	Bully (OR)
17050119	Cataloging Unit	Willow (OR)
17050120	Cataloging Unit	South Fork Payette (ID)
17050121	Cataloging Unit	Middle Fork Payette (ID)
17050122	Cataloging Unit	Payette (ID)
17050123	Cataloging Unit	North Fork Payette (ID)
17050124	Cataloging Unit	Weiser (ID)
170502	Accounting Unit	Middle Snake-Powder (ID,OR)
17050201	Cataloging Unit	Brownlee Reservoir (ID,OR)
17050202	Cataloging Unit	Burnt (OR)
17050203	Cataloging Unit	Powder (OR)
1706	Subregion	Lower Snake (ID,OR,WA)
170601	Accounting Unit	Lower Snake (ID,OR,WA)
17060101	Cataloging Unit	Hells Canyon (ID,OR)
17060102	Cataloging Unit	Imnaha (OR)
17060103	Cataloging Unit	Lower Snake-Asotin (ID,OR,WA)
17060104	Cataloging Unit	Upper Grande Ronde (OR)
17060105	Cataloging Unit	Wallowa (OR)
17060106	Cataloging Unit	Lower Grande Ronde (OR,WA)
17060107	Cataloging Unit	Lower Snake-Tucannon (WA)
17060108	Cataloging Unit	Palouse (ID,WA)
17060109	Cataloging Unit	Rock (ID,WA)
17060110	Cataloging Unit	Lower Snake (WA)
170602	Accounting Unit	The Salmon River Basin (ID)
17060201	Cataloging Unit	Upper Salmon (ID)
17060202	Cataloging Unit	Pahsimeroi (ID)
17060203	Cataloging Unit	Middle Salmon-Panther (ID)
17060204	Cataloging Unit	Lemhi (ID)
17060205	Cataloging Unit	Upper Middle Fork Salmon (ID)
17060206	Cataloging Unit	Lower Middle Fork Salmon (ID)
17060207	Cataloging Unit	Middle Salmon-Chamberlain (ID)
17060208	Cataloging Unit	South Fork Salmon (ID)
17060209	Cataloging Unit	Lower Salmon (ID)
17060210	Cataloging Unit	Little Salmon (ID)
170603	Accounting Unit	The Clearwater River Basin (ID,WA)
17060301	Cataloging Unit	Upper Selway (ID)
17060302	Cataloging Unit	Lower Selway (ID)
17060303	Cataloging Unit	Lochsa (ID)
17060304	Cataloging Unit	Middle Fork Clearwater (ID)
17060305	Cataloging Unit	South Fork Clearwater (ID)
17060306	Cataloging Unit	Clearwater (ID,WA)
17060307	Cataloging Unit	Upper North Fork Clearwater (ID)
17060308	Cataloging Unit	Lower North Fork Clearwater (ID)
1707	Subregion	The Columbia River Basin (OR,WA)
170701	Accounting Unit	Middle Columbia (OR,WA)
17070101	Cataloging Unit	Middle Columbia-Lake Wallula (OR,WA)
17070102	Cataloging Unit	Walla Walla (OR,WA)
17070103	Cataloging Unit	Umatilla (OR)
17070104	Cataloging Unit	Willow (OR)
17070105	Cataloging Unit	Middle Columbia-Hood (OR,WA)
17070106	Cataloging Unit	Klickitat (WA)
170702	Accounting Unit	The John Day River Basin (OR)
17070201	Cataloging Unit	Upper John Day (OR)
17070202	Cataloging Unit	North Fork John Day (OR)
17070203	Cataloging Unit	Middle Fork John Day (OR)
17070204	Cataloging Unit	Lower John Day (OR)
170703	Accounting Unit	The Deschutes River Basin (OR)
17070301	Cataloging Unit	Upper Deschutes (OR)
17070302	Cataloging Unit	Little Deschutes (OR)
17070303	Cataloging Unit	Beaver-South Fork (OR)
17070304	Cataloging Unit	Upper Crooked (OR)
17070305	Cataloging Unit	Lower Crooked (OR)
17070306	Cataloging Unit	Lower Deschutes (OR)
17070307	Cataloging Unit	Trout (OR)
1708	Subregion	The Columbia River Basin (OR,WA)
170800	Accounting Unit	Lower Columbia (OR,WA)
17080001	Cataloging Unit	Lower Columbia-Sandy (OR,WA)
17080002	Cataloging Unit	Lewis (WA)
17080003	Cataloging Unit	Lower Columbia-Clatskanie (OR,WA)
17080004	Cataloging Unit	Upper Cowlitz (WA)
17080005	Cataloging Unit	Lower Cowlitz (WA)
17080006	Cataloging Unit	Lower Columbia (OR,WA)
1709	Subregion	The Willamette River Basin (OR)
170900	Accounting Unit	Willamette (OR)
17090001	Cataloging Unit	Middle Fork Willamette (OR)
17090002	Cataloging Unit	Coast Fork Willamette (OR)
17090003	Cataloging Unit	Upper Willamette (OR)
17090004	Cataloging Unit	Mckenzie (OR)
17090005	Cataloging Unit	North Santiam (OR)
17090006	Cataloging Unit	South Santiam (OR)
17090007	Cataloging Unit	Middle Willamette (OR)
17090008	Cataloging Unit	Yamhill (OR)
17090009	Cataloging Unit	Molalla-Pudding (OR)
17090010	Cataloging Unit	Tualatin (OR)
17090011	Cataloging Unit	Clackamas (OR)
17090012	Cataloging Unit	Lower Willamette (OR)
1710	Subregion	Oregon-Washington Coastal (CA,OR,WA)
171001	Accounting Unit	Washington Coastal (WA)
17100101	Cataloging Unit	Hoh-Quillayute (WA)
17100102	Cataloging Unit	Queets-Quinault (WA)
17100103	Cataloging Unit	Upper Chehalis (WA)
17100104	Cataloging Unit	Lower Chehalis (WA)
17100105	Cataloging Unit	Grays Harbor (WA)
17100106	Cataloging Unit	Willapa Bay (WA)
171002	Accounting Unit	Northern Oregon Coastal (OR)
17100201	Cataloging Unit	Necanicum (OR)
17100202	Cataloging Unit	Nehalem (OR)
17100203	Cataloging Unit	Wilson-Trusk-Nestuccu (OR)
17100204	Cataloging Unit	Siletz-Yaquina (OR)
17100205	Cataloging Unit	Alsea (OR)
17100206	Cataloging Unit	Siuslaw (OR)
17100207	Cataloging Unit	Siltcoos (OR)
171003	Accounting Unit	Southern Oregon Coastal (CA,OR)
17100301	Cataloging Unit	North Umpqua (OR)
17100302	Cataloging Unit	South Umpqua (OR)
17100303	Cataloging Unit	Umpqua (OR)
17100304	Cataloging Unit	Coos (OR)
17100305	Cataloging Unit	Coquille (OR)
17100306	Cataloging Unit	Sixes (OR)
17100307	Cataloging Unit	Upper Rogue (OR)
17100308	Cataloging Unit	Middle Rogue (OR)
17100309	Cataloging Unit	Applegate (CA,OR)
17100310	Cataloging Unit	Lower Rogue (OR)
17100311	Cataloging Unit	Illinois (CA,OR)
17100312	Cataloging Unit	Chetco (CA,OR)
1711	Subregion	Puget Sound (WA)
171100	Accounting Unit	Puget Sound (WA)
17110001	Cataloging Unit	Fraser (WA)
17110002	Cataloging Unit	Strait of Georgia (WA)
17110003	Cataloging Unit	San Juan Islands (WA)
17110004	Cataloging Unit	Nooksack (WA)
17110005	Cataloging Unit	Upper Skagit (WA)
17110006	Cataloging Unit	Sauk (WA)
17110007	Cataloging Unit	Lower Skagit (WA)
17110008	Cataloging Unit	Stillaguamish (WA)
17110009	Cataloging Unit	Skykomish (WA)
17110010	Cataloging Unit	Snoqualmie (WA)
17110011	Cataloging Unit	Snohomish (WA)
17110012	Cataloging Unit	Lake Washington (WA)
17110013	Cataloging Unit	Duwamish (WA)
17110014	Cataloging Unit	Puyallup (WA)
17110015	Cataloging Unit	Nisqually (WA)
17110016	Cataloging Unit	Deschutes (WA)
17110017	Cataloging Unit	Skokomish (WA)
17110018	Cataloging Unit	Hood Canal (WA)
17110019	Cataloging Unit	Puget Sound (WA)
17110020	Cataloging Unit	Dungeness-Elwha (WA)
17110021	Cataloging Unit	Crescent-Hoko (WA)
1712	Subregion	Oregon Closed Basins (CA,NV,OR)
171200	Accounting Unit	Oregon Closed Basins (CA,NV,OR)
17120001	Cataloging Unit	Harney-Malheur Lakes (OR)
17120002	Cataloging Unit	Silvies (OR)
17120003	Cataloging Unit	Donner und Blitzen (OR)
17120004	Cataloging Unit	Silver (OR)
17120005	Cataloging Unit	Summer Lake (OR)
17120006	Cataloging Unit	Lake Abert (OR)
17120007	Cataloging Unit	Warner Lakes (CA,NV,OR)
17120008	Cataloging Unit	Guano (NV,OR)
17120009	Cataloging Unit	Alvord Lake (NV,OR)
18 	Region	California Region (CA,NV,OR)
1801	Subregion	Klamath-Northern California Coastal (CA,OR)
180101	Accounting Unit	Northern California Coastal (CA,OR)
18010101	Cataloging Unit	Smith (CA,OR)
18010102	Cataloging Unit	Mad-Redwood (CA)
18010103	Cataloging Unit	Upper Eel (CA)
18010104	Cataloging Unit	Middle Fork Eel (CA)
18010105	Cataloging Unit	Lower Eel (CA)
18010106	Cataloging Unit	South Fork Eel (CA)
18010107	Cataloging Unit	Mattole (CA)
18010108	Cataloging Unit	Big-Navarro-Garcia (CA)
18010109	Cataloging Unit	Gualala-Salmon (CA)
18010110	Cataloging Unit	Russian (CA)
18010111	Cataloging Unit	Bodega Bay (CA)
180102	Accounting Unit	The Klamath River Basin (CA,OR)
18010201	Cataloging Unit	Williamson (OR)
18010202	Cataloging Unit	Sprague (OR)
18010203	Cataloging Unit	Upper Klamath Lake (OR)
18010204	Cataloging Unit	Lost (CA,OR)
18010205	Cataloging Unit	Butte (CA,OR)
18010206	Cataloging Unit	Upper Klamath (CA,OR)
18010207	Cataloging Unit	Shasta (CA)
18010208	Cataloging Unit	Scott (CA)
18010209	Cataloging Unit	Lower Klamath (CA,OR)
18010210	Cataloging Unit	Salmon (CA)
18010211	Cataloging Unit	Trinity (CA)
18010212	Cataloging Unit	South Fork Trinity (CA)
1802	Subregion	The Sacramento River Basin (CA,OR)
180200	Accounting Unit	Upper Sacramento (CA,OR)
18020001	Cataloging Unit	Goose Lake (CA,OR)
18020002	Cataloging Unit	Upper Pit (CA)
18020003	Cataloging Unit	Lower Pit (CA)
18020004	Cataloging Unit	McCloud (CA)
18020005	Cataloging Unit	Sacramento Headwaters (CA)
180201	Accounting Unit	Lower Sacramento (CA)
18020101	Cataloging Unit	Sacramento-Lower Cow-Lower Clear (CA)
18020102	Cataloging Unit	Lower Cottonwood (CA)
18020103	Cataloging Unit	Sacramento-Lower Thomes (CA)
18020104	Cataloging Unit	Sacramento-Stone Corral (CA)
18020105	Cataloging Unit	Lower Butte (CA)
18020106	Cataloging Unit	Lower Feather (CA)
18020107	Cataloging Unit	Lower Yuba (CA)
18020108	Cataloging Unit	Lower Bear (CA)
18020109	Cataloging Unit	Lower Sacramento (CA)
18020110	Cataloging Unit	Lower Cache (CA)
18020111	Cataloging Unit	Lower American (CA)
18020112	Cataloging Unit	Sacramento-Upper Clear (CA)
18020113	Cataloging Unit	Cottonwood Headwaters (CA)
18020114	Cataloging Unit	Upper Elder-Upper Thomes (CA)
18020115	Cataloging Unit	Upper Stony (CA)
18020116	Cataloging Unit	Upper Cache (CA)
18020117	Cataloging Unit	Upper Putah (CA)
18020118	Cataloging Unit	Upper Cow-Battle (CA)
18020119	Cataloging Unit	Mill-Big Chico (CA)
18020120	Cataloging Unit	Upper Butte (CA)
18020121	Cataloging Unit	North Fork Feather (CA)
18020122	Cataloging Unit	East Branch North Fork Feather (CA)
18020123	Cataloging Unit	Middle Fork Feather (CA)
18020124	Cataloging Unit	Honcut Headwaters (CA)
18020125	Cataloging Unit	Upper Yuba (CA)
18020126	Cataloging Unit	Upper Bear (CA)
18020127	Cataloging Unit	Upper Coon-Upper Auburn (CA)
18020128	Cataloging Unit	North Fork American (CA)
18020129	Cataloging Unit	South Fork American (CA)
1803	Subregion	Tulare-Buena Vista Lakes (CA)
180300	Accounting Unit	Tulare-Buena Vista Lakes (CA)
18030001	Cataloging Unit	Upper Kern (CA)
18030002	Cataloging Unit	South Fork Kern (CA)
18030003	Cataloging Unit	Middle Kern-Upper Tehachapi-Grapevine (CA)
18030004	Cataloging Unit	Upper Poso (CA)
18030005	Cataloging Unit	Upper Deer-Upper White (CA)
18030006	Cataloging Unit	Upper Tule (CA)
18030007	Cataloging Unit	Upper Kaweah (CA)
18030008	Cataloging Unit	Mill (CA)
18030009	Cataloging Unit	Upper Dry (CA)
18030010	Cataloging Unit	Upper King (CA)
18030011	Cataloging Unit	Upper Los Gatos-Avenal (CA)
18030012	Cataloging Unit	Tulare-Buena Vista Lakes (CA)
1804	Subregion	The San Joaquin River Basin (CA)
180400	Accounting Unit	San Joaquin (CA)
18040001	Cataloging Unit	Middle San Joaquin-Lower Chowchilla (CA)
18040002	Cataloging Unit	Middle San Joaquin-Lower Merced-Lower Stanislaus (CA)
18040003	Cataloging Unit	San Joaquin Delta (CA)
18040004	Cataloging Unit	Lower Calaveras-Mormon Slough (CA)
18040005	Cataloging Unit	Lower Cosumnes-Lower Mokelumne (CA)
18040006	Cataloging Unit	Upper San Joaquin (CA)
18040007	Cataloging Unit	Upper Chowchilla-Upper Fresno (CA)
18040008	Cataloging Unit	Upper Merced (CA)
18040009	Cataloging Unit	Upper Tuolumne (CA)
18040010	Cataloging Unit	Upper Stanislaus (CA)
18040011	Cataloging Unit	Upper Calaveras (CA)
18040012	Cataloging Unit	Upper Mokelumne (CA)
18040013	Cataloging Unit	Upper Cosumnes (CA
18040014	Cataloging Unit	Panoche-San Luis Reservoir (CA)
1805	Subregion	San Francisco Bay (CA)
180500	Accounting Unit	San Francisco Bay (CA)
18050001	Cataloging Unit	Suisun Bay (CA)
18050002	Cataloging Unit	San Pablo Bay (CA)
18050003	Cataloging Unit	Coyote (CA)
18050004	Cataloging Unit	San Francisco Bay (CA)
18050005	Cataloging Unit	Tomales-Drake Bays (CA)
18050006	Cataloging Unit	San Francisco Coastal South (CA)
1806	Subregion	Central California Coastal (CA)
180600	Accounting Unit	Central California Coastal (CA)
18060001	Cataloging Unit	San Lorenzo-Soquel (CA)
18060002	Cataloging Unit	Pajaro (CA)
18060003	Cataloging Unit	Carrizo Plain (CA)
18060004	Cataloging Unit	Estrella (CA)
18060005	Cataloging Unit	Salinas (CA)
18060006	Cataloging Unit	Central Coastal (CA)
18060007	Cataloging Unit	Cuyama (CA)
18060008	Cataloging Unit	Santa Maria (CA)
18060009	Cataloging Unit	San Antonio (CA)
18060010	Cataloging Unit	Santa Ynez (CA)
18060011	Cataloging Unit	Alisal-Elkhorn Sloughs (CA)
18060012	Cataloging Unit	Carmel (CA)
18060013	Cataloging Unit	Santa Barbara Coastal (CA)
18060014	Cataloging Unit	Santa Barbara Channel Islands (CA)
1807	Subregion	Southern California Coastal (CA)
180701	Accounting Unit	Ventura-San Gabriel Coastal (CA)
18070101	Cataloging Unit	Ventura (CA)
18070102	Cataloging Unit	Santa Clara (CA)
18070103	Cataloging Unit	Calleguas (CA)
18070104	Cataloging Unit	Santa Monica Bay (CA)
18070105	Cataloging Unit	Los Angeles (CA)
18070106	Cataloging Unit	San Gabriel (CA)
18070107	Cataloging Unit	San Pedro Channel Islands (CA)
180702	Accounting Unit	Santa Ana (CA)
18070201	Cataloging Unit	Seal Beach (CA)
18070202	Cataloging Unit	San Jacinto (CA)
18070203	Cataloging Unit	Santa Ana (CA)
18070204	Cataloging Unit	Newport Bay (CA)
180703	Accounting Unit	Laguna-San Diego Coastal (CA)
18070301	Cataloging Unit	Aliso-San Onofre (CA)
18070302	Cataloging Unit	Santa Margarita (CA)
18070303	Cataloging Unit	San Luis Rey-Escondido (CA)
18070304	Cataloging Unit	San Diego (CA)
18070305	Cataloging Unit	Cottonwood-Tijuana (CA)
1808	Subregion	North Lahontan (CA,NV)
180800	Accounting Unit	North Lahontan (CA,NV)
18080001	Cataloging Unit	Surprise Valley (CA,NV)
18080002	Cataloging Unit	Madeline Plains (CA,NV)
18080003	Cataloging Unit	Honey-Eagle Lakes (CA,NV)
1809	Subregion	Northern Mojave-Mono Lake (CA,NV)
180901	Accounting Unit	The Mono Lake and Owens Lake Closed Basins (CA,NV)
18090101	Cataloging Unit	Mono Lake (CA,NV)
18090102	Cataloging Unit	Crowley Lake (CA,NV)
18090103	Cataloging Unit	Owens Lake (CA)
180902	Accounting Unit	Northern Mojave (CA,NV)
18090201	Cataloging Unit	Eureka-Saline Valleys (CA,NV)
18090202	Cataloging Unit	Upper Amargosa (CA,NV)
18090203	Cataloging Unit	Death Valley-Lower Amargosa (CA,NV)
18090204	Cataloging Unit	Panamint Valley (CA)
18090205	Cataloging Unit	Indian Wells-Searles Valleys (CA)
18090206	Cataloging Unit	Antelope-Fremont Valleys (CA)
18090207	Cataloging Unit	Coyote-Cuddeback Lakes (CA)
18090208	Cataloging Unit	Mojave (CA)
1810	Subregion	Southern Mojave-Salton Sea (CA)
181001	Accounting Unit	Southern Mojave (CA)
18100100	Cataloging Unit	Southern Mojave (CA)
181002	Accounting Unit	The Salton Sea Closed Basin (CA)
18100200	Cataloging Unit	Salton Sea (CA)
19 	Region	Alaska Region (AK)
1901	Subregion	Southeast Alaska (AK)
19010001	Cataloging Unit	(Pre-1996 Code) East Arctic Slope. (AK)
19010002	Cataloging Unit	(Pre-1996 Code) Colville. (AK)
19010003	Cataloging Unit	(Pre-1996 Code) West Arctic Slope. (AK)
190101	Accounting Unit	Southern Southeast Alaska (AK)
19010101	Cataloging Unit	Southeast Mainland (AK)
19010102	Cataloging Unit	Ketchikan (AK)
19010103	Cataloging Unit	Prince of Wales (AK)
190102	Accounting Unit	Central Southeast Alaska (AK)
19010201	Cataloging Unit	Mainland (AK)
19010202	Cataloging Unit	Kuiu-Kupreanof-Mitkof-Etolin-Zarembo-Wrangell Islands (AK)
19010203	Cataloging Unit	Baranof-Chichagof Islands (AK)
19010204	Cataloging Unit	Admiralty Island (AK)
190103	Accounting Unit	Northern Southeast Alaska (AK)
19010301	Cataloging Unit	Lynn Canal (AK)
19010302	Cataloging Unit	Glacier Bay (AK)
19010303	Cataloging Unit	Chilkat-Skagway Rivers (AK)
190104	Accounting Unit	Gulf of Alaska (AK)
19010401	Cataloging Unit	Yakutat Bay (AK)
19010402	Cataloging Unit	Bering Glacier (AK)
1902	Subregion	South Central Alaska (AK)
19020001	Cataloging Unit	(Pre-1996 Code) Kotzebue Sound. (AK)
19020002	Cataloging Unit	(Pre-1996 Code) Norton Sound-St.Lawrence Island. (AK)
190201	Accounting Unit	Copper River (AK)
19020101	Cataloging Unit	Upper Copper River (AK)
19020102	Cataloging Unit	Middle Copper River (AK)
19020103	Cataloging Unit	Chitina River (AK)
19020104	Cataloging Unit	Lower Copper River (AK)
190202	Accounting Unit	Prince William Sound (AK)
19020201	Cataloging Unit	Eastern Prince William Sound (AK)
19020202	Cataloging Unit	Western Prince William Sound (AK)
190203	Accounting Unit	Kenai Peninsula (AK)
19020301	Cataloging Unit	Lower Kenai Peninsula (AK)
19020302	Cataloging Unit	Upper Kenai Peninsula (AK)
190204	Accounting Unit	Knik Arm (AK)
19020401	Cataloging Unit	Anchorage (AK)
19020402	Cataloging Unit	Matanuska (AK)
190205	Accounting Unit	Susitna River (AK)
19020501	Cataloging Unit	Upper Susitna River (AK)
19020502	Cataloging Unit	Chulitna River (AK)
19020503	Cataloging Unit	Talkeetna River (AK)
19020504	Cataloging Unit	Yentna River (AK)
19020505	Cataloging Unit	Lower Susitna River (AK)
190206	Accounting Unit	Western Cook Inlet (AK)
19020601	Cataloging Unit	Redoubt-Trading Bays (AK)
19020602	Cataloging Unit	Tuxedni-Kamishak Bays (AK)
190207	Accounting Unit	Kodiak-Shelikof (AK)
19020701	Cataloging Unit	Kodiak-Afognak Islands (AK)
19020702	Cataloging Unit	Shelikof Strait (AK)
1903	Subregion	Southwest Alaska (AK)
19030001	Cataloging Unit	(Pre-1996 Code) Fortymile-White. (AK)
19030002	Cataloging Unit	(Pre-1996 Code) Upper Yukon. (AK)
19030003	Cataloging Unit	(Pre-1996 Code) Middle Yukon. (AK)
19030004	Cataloging Unit	(Pre-1996 Code) Tanana. (AK)
19030005	Cataloging Unit	(Pre-1996 Code) Koyukuk. (AK)
19030006	Cataloging Unit	(Pre-1996 Code) Lower Yukon. (AK)
190301	Accounting Unit	Aleutian Islands (AK)
19030101	Cataloging Unit	Cold Bay (AK)
19030102	Cataloging Unit	Fox Islands (AK)
19030103	Cataloging Unit	Western Aleutian Islands (AK)
19030104	Cataloging Unit	Pribilog Islands (AK)
190302	Accounting Unit	Kvichak-Port Heiden (AK)
19030201	Cataloging Unit	Port Heiden (AK)
19030202	Cataloging Unit	Ugashik Bay (AK)
19030203	Cataloging Unit	Egegik Bay (AK)
19030204	Cataloging Unit	Naknek (AK)
19030205	Cataloging Unit	Lake Clark (AK)
19030206	Cataloging Unit	Lake Iliamna (AK)
190303	Accounting Unit	Nushagak River (AK)
19030301	Cataloging Unit	Upper Nushagak River (AK)
19030302	Cataloging Unit	Mulchatna River (AK)
19030303	Cataloging Unit	Lower Nushagak River (AK)
19030304	Cataloging Unit	Wood River (AK)
19030305	Cataloging Unit	Togiak (AK)
190304	Accounting Unit	Upper Kuskokwim River (AK)
19030401	Cataloging Unit	North Fork Kuskokwim River (AK)
19030402	Cataloging Unit	Farewell Lake (AK)
19030403	Cataloging Unit	Takotna River (AK)
19030404	Cataloging Unit	Holitna River (AK)
19030405	Cataloging Unit	Stony River (AK)
190305	Accounting Unit	Lower Kuskokwim River (AK)
19030501	Cataloging Unit	Aniak (AK)
19030502	Cataloging Unit	Kuskokwim Delta (AK)
19030503	Cataloging Unit	Nunivak-St. Matthew Islands (AK)
1904	Subregion	Yukon (AK)
19040001	Cataloging Unit	(Pre-1996 Code) Kuskokwim Bay-Nunivak,St.Matthew Is. (AK)
19040002	Cataloging Unit	(Pre-1996 Code) Bristol Bay. (AK)
19040003	Cataloging Unit	(Pre-1996 Code) Aleutian-Pribilof Islands. (AK)
190401	Accounting Unit	Canadian Tributaries (AK)
19040101	Cataloging Unit	White River (AK)
19040102	Cataloging Unit	Ladue River (AK)
19040103	Cataloging Unit	Sixtymile River (AK)
19040104	Cataloging Unit	Fortymile River (AK)
190402	Accounting Unit	Porcupine River (AK)
19040201	Cataloging Unit	Old Crow River (AK)
19040202	Cataloging Unit	Coleen River (AK)
19040203	Cataloging Unit	Sheenjek River (AK)
19040204	Cataloging Unit	Black River (AK)
19040205	Cataloging Unit	Porcupine Flats (AK)
190403	Accounting Unit	Chandalar-Christian Rivers (AK)
19040301	Cataloging Unit	Middle Fork-North Fork Chandalar Rivers (AK)
19040302	Cataloging Unit	East Fork Chandalar River (AK)
19040303	Cataloging Unit	Christian River (AK)
19040304	Cataloging Unit	Lower Chandalar River (AK)
190404	Accounting Unit	Upper Yukon River (AK)
19040401	Cataloging Unit	Eagle to Circle (AK)
19040402	Cataloging Unit	Birch-Beaver Creeks (AK)
19040403	Cataloging Unit	Yukon Flats (AK)
19040404	Cataloging Unit	Ramparts (AK)
190405	Accounting Unit	Tanana River (AK)
19040501	Cataloging Unit	Nebesna-Chisana Rivers (AK)
19040502	Cataloging Unit	Tok (AK)
19040503	Cataloging Unit	Healy Lake (AK)
19040504	Cataloging Unit	Delta River (AK)
19040505	Cataloging Unit	Salcha River (AK)
19040506	Cataloging Unit	Chena River (AK)
19040507	Cataloging Unit	Tanana Flats (AK)
19040508	Cataloging Unit	Nenana River (AK)
19040509	Cataloging Unit	Tolovana River (AK)
19040510	Cataloging Unit	Kantishna River (AK)
19040511	Cataloging Unit	Lower Tanana River (AK)
190406	Accounting Unit	Koyukuk River (AK)
19040601	Cataloging Unit	Upper Koyukuk River (AK)
19040602	Cataloging Unit	South Fork Koyukuk River (AK)
19040603	Cataloging Unit	Alatna River (AK)
19040604	Cataloging Unit	Kanuti River (AK)
19040605	Cataloging Unit	Allakaket (AK)
19040606	Cataloging Unit	Huslia River (AK)
19040607	Cataloging Unit	Dulbi River (AK)
19040608	Cataloging Unit	Koyukuk Flats (AK)
19040609	Cataloging Unit	Kateel River (AK)
190407	Accounting Unit	Central Yukon (AK)
19040701	Cataloging Unit	Tozitna River (AK)
19040702	Cataloging Unit	Nowitna River (AK)
19040703	Cataloging Unit	Melozitna River (AK)
19040704	Cataloging Unit	Ramparts to Ruby (AK)
19040705	Cataloging Unit	Galena (AK)
190408	Accounting Unit	Lower Yukon (AK)
19040801	Cataloging Unit	Anvik River (AK)
19040802	Cataloging Unit	Upper Innoko River (AK)
19040803	Cataloging Unit	Lower Innoko River (AK)
19040804	Cataloging Unit	Anvik to Pilot Station (AK)
19040805	Cataloging Unit	Yukon Delta (AK)
1905	Subregion	Northwest Alaska (AK)
19050001	Cataloging Unit	(Pre-1996 Code) Kodiak-Shelikof. (AK)
19050002	Cataloging Unit	(Pre-1996 Code) Cook Inlet. (AK)
19050003	Cataloging Unit	(Pre-1996 Code) Gulf of Alaska. (AK)
190501	Accounting Unit	Norton Sound (AK)
19050101	Cataloging Unit	St. Lawrence Island (AK)
19050102	Cataloging Unit	Unalakleet (AK)
19050103	Cataloging Unit	Norton Bay (AK)
19050104	Cataloging Unit	Nome (AK)
19050105	Cataloging Unit	Imuruk Basin (AK)
190502	Accounting Unit	Northern Seward Peninsula (AK)
19050201	Cataloging Unit	Shishmaref (AK)
19050202	Cataloging Unit	Goodhope-Spafarief Bay (AK)
19050203	Cataloging Unit	Buckland River (AK)
190503	Accounting Unit	Kobuk-Selawik Rivers (AK)
19050301	Cataloging Unit	Selawik Lake (AK)
19050302	Cataloging Unit	Upper Kobuk River (AK)
19050303	Cataloging Unit	Middle Kobuk River (AK)
19050304	Cataloging Unit	Lower Kobuk River (AK)
190504	Accounting Unit	Noatak River-Lisburne Peninsula (AK)
19050401	Cataloging Unit	Upper Noatak River (AK)
19050402	Cataloging Unit	Middle Noatak River (AK)
19050403	Cataloging Unit	Lower Noatak River (AK)
19050404	Cataloging Unit	Wulik-Kivalina Rivers (AK)
19050405	Cataloging Unit	Lisburne Peninsula (AK)
1906	Subregion	Arctic Slope (AK)
19060000	Cataloging Unit	(Pre-1996 Code) Southeast Alaska. (AK)
190601	Accounting Unit	Western Arctic (AK)
19060101	Cataloging Unit	Kukpowruk River (AK)
19060102	Cataloging Unit	Kokolik River (AK)
19060103	Cataloging Unit	Utukok River (AK)
190602	Accounting Unit	Barrow (AK)
19060201	Cataloging Unit	Kuk River (AK)
19060202	Cataloging Unit	Northwest Coast (AK)
19060203	Cataloging Unit	Meade River (AK)
19060204	Cataloging Unit	Ikpikpuk River (AK)
19060205	Cataloging Unit	Harrison Bay (AK)
190603	Accounting Unit	Colville River (AK)
19060301	Cataloging Unit	Upper Colville River (AK)
19060302	Cataloging Unit	Killik River (AK)
19060303	Cataloging Unit	Chandler-Anaktuvuk Rivers (AK)
19060304	Cataloging Unit	Lower Colville River (AK)
190604	Accounting Unit	Prudhoe Bay (AK)
19060401	Cataloging Unit	Kuparuk River (AK)
19060402	Cataloging Unit	Sagavanirktok River (AK)
19060403	Cataloging Unit	Mikkelsen Bay (AK)
190605	Accounting Unit	Eastern Arctic (AK)
19060501	Cataloging Unit	Canning River (AK)
19060502	Cataloging Unit	Camden Bay (AK)
19060503	Cataloging Unit	Beaufort Lagoon (AK)
20 	Region	Hawaii Region (HI)
2001	Subregion	Hawaii (HI)
200100	Accounting Unit	Hawaii (HI)
20010000	Cataloging Unit	Hawaii (HI)
2002	Subregion	Maui (HI)
200200	Accounting Unit	Maui (HI)
20020000	Cataloging Unit	Maui (HI)
2003	Subregion	Kahoolawe (HI)
200300	Accounting Unit	Kahoolawe (HI)
20030000	Cataloging Unit	Kahoolawe (HI)
2004	Subregion	Lanai (HI)
200400	Accounting Unit	Lanai (HI)
20040000	Cataloging Unit	Lanai (HI)
2005	Subregion	Molokai (HI)
200500	Accounting Unit	Molokai (HI)
20050000	Cataloging Unit	Molokai (HI)
2006	Subregion	Oahu (HI)
200600	Accounting Unit	Oahu (HI)
20060000	Cataloging Unit	Oahu (HI)
2007	Subregion	Kauai (HI)
200700	Accounting Unit	Kauai (HI)
20070000	Cataloging Unit	Kauai (HI)
2008	Subregion	Niihau (HI)
200800	Accounting Unit	Niihau (HI)
20080000	Cataloging Unit	Niihau (HI)
2009	Subregion	Northwestern Hawaiian Islands (HI)
200900	Accounting Unit	Northwestern Hawaiian Islands (HI)
20090000	Cataloging Unit	Northwestern Hawaiian Islands (HI)
21 	Region	Caribbean Region (PR,VI)
2101	Subregion	Puerto Rico (PR)
210100	Accounting Unit	Puerto Rico (PR)
21010001	Cataloging Unit	Interior Puerto Rico (PR)
21010002	Cataloging Unit	Cibuco-Guajataca (PR)
21010003	Cataloging Unit	Culebrinas-Guanajibo (PR)
21010004	Cataloging Unit	Southern Puerto Rico (PR)
21010005	Cataloging Unit	Eastern Puerto Rico (PR)
21010006	Cataloging Unit	Puerto Rican Islands (PR)
2102	Subregion	Virgin Islands (VI)
210200	Accounting Unit	Virgin Islands (VI)
21020001	Cataloging Unit	St. John-St. Thomas (VI)
21020002	Cataloging Unit	St. Croix (VI)
2103	Subregion	Caribbean Outlying Areas
210300	Accounting Unit	Caribbean Outlying Areas
21030001	Cataloging Unit	Canal Zone
21030002	Cataloging Unit	Navassa
21030003	Cataloging Unit	Roncador-Serrana
