# NLCD 2001 Land Cover (2011 Edition, amended 2014) - National Geospatial Data Asset (NGDA) Land Use Land Cover, State: NLCD2001_LC_Iowa

Metadata also available as

# Metadata:

- Identification_Information
- Data_Quality_Information
- Spatial_Data_Organization_Information
- Spatial_Reference_Information
- Entity_and_Attribute_Information
- Distribution_Information
- Metadata_Reference_Information

Identification_Information:
  Citation:
    Citation_Information:
      Originator: U.S. Geological Survey
      Publication_Date: 20141010
      Title:
        NLCD 2001 Land Cover (2011 Edition, amended 2014) - National Geospatial Data Asset (NGDA) Land Use Land Cover, State: NLCD2001_LC_Iowa
      Edition: 2011
      Geospatial_Data_Presentation_Form: remote-sensing image
      Series_Information:
        Series_Name: None
        Issue_Identification: None
      Publication_Information:
        Publication_Place: Sioux Falls, SD
        Publisher: U.S. Geological Survey
      Other_Citation_Details:
        References: Homer, C., C. Huang, L. Yang, B. Wylie and M. Coan, 2004. Development of a 2001 national land cover database for the United States. Photogrammetric Engineering and Remote Sensing Vol.70, No.7, pp 829-840 (or online at www.mrlc.gov/publications.) The USGS acknowledges the support of USGS and Contractor NLCD Mapping Teams in development of data for this product.
      Online_Linkage:
        <http://gisdata.usgs.gov/tdds/downloadfile.php?TYPE=nlcd2001_lc_state&ORIG=META&FNAME=NLCD2001_LC_Iowa.zip>
      Online_Linkage:
        <http://tdds.cr.usgs.gov/metadata/nlcd/2001/landcover/states/NLCD2001_LC_Iowa.htm>
      Online_Linkage: <http://nationalmap.gov/viewer.html>
  Description:
    Abstract:
      The National Land Cover Database 2001 Land Cover 2011 Edition layer is produced through a cooperative project conducted by the Multi-Resolution Land Characteristics (MRLC) Consortium. The MRLC Consortium is a partnership of federal agencies (www.mrlc.gov), consisting of the U.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration (NOAA), the U.S. Environmental Protection Agency (EPA), the U.S. Department of Agriculture - Forest Service (USDA-FS), the National Park Service (NPS), the U.S. Fish and Wildlife Service (FWS), the Bureau of Land Management (BLM) and the USDA Natural Resources Conservation Service (NRCS).
      One of the primary goals of the project is to generate a current, consistent, seamless, and accurate National Land Cover Database (NLCD) circa 2001 for the United States at medium spatial resolution. This land cover map and all documents pertaining to it are considered "provisional" until a formal accuracy assessment can be conducted. For a detailed definition and discussion on MRLC and the NLCD 2001 products, refer to Homer et al. (2004) and <http://www.mrlc.gov/mrlc2k.asp>.
      The NLCD 2001 is created by partitioning the U.S. into mapping zones. A total of 66 mapping zones were delineated within the conterminous U.S. based on ecoregion and geographical characteristics, edge matching features and the size requirement of Landsat mosaics. This update represents a seamless assembly of updated NLCD 2001 Land Cover (2011 Edition) for all 66 MRLC mapping zones. Questions about the NLCD the NLCD 2001 Land Cover 2011 Edition can be directed to the NLCD 2001 land cover mapping team at USGS EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov.
    Purpose:
      The goal of this project is to provide the Nation with complete, current and consistent public domain information on its land use and land cover.
    Supplemental_Information:
      Corner Coordinates (center of pixel, projection meters) Upper Left Corner: -2493045 meters(X), 3310005 meters(Y) Lower Right Corner: -177285 meters(X), 2342655 meters(Y)
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 19990428
        Ending_Date: 20040726
    Currentness_Reference: ground condition
  Status:
    Progress: In work
    Maintenance_and_Update_Frequency: Every 5 years
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -96.8201114977701
      East_Bounding_Coordinate: -88.4284871078411
      North_Bounding_Coordinate: 58.4350706019513
      South_Bounding_Coordinate: 54.9070557220311
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: NGDA Portfolio Themes
      Theme_Keyword: NGDA
      Theme_Keyword: National Geospatial Data Asset
      Theme_Keyword: Land Use Land Cover Theme
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Land Cover
      Theme_Keyword: GIS
      Theme_Keyword: U.S. Geological Survey
      Theme_Keyword: USGS
      Theme_Keyword: digital spatial data
    Theme:
      Theme_Keyword_Thesaurus: ISO 19115 Topic Category
      Theme_Keyword: imageryBaseMapsEarthCover
      Theme_Keyword: 010
    Place:
      Place_Keyword_Thesaurus:
        U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard 10-4,): Washington, D.C., National Institute of Standards and Technology
      Place_Keyword: United States
      Place_Keyword: U.S.
      Place_Keyword: US
  Access_Constraints: None
  Use_Constraints: None
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Position: Customer Services Representative
      Contact_Address:
        Address_Type: mailing and physical
        Address: USGS EROS
        Address: 47914 252nd Street
        City: Sioux Falls
        State_or_Province: SD
        Postal_Code: 57198-0001
        Country: USA
      Contact_Voice_Telephone: 605/594-6151
      Contact_TDD/TTY_Telephone: 605/594-6933
      Contact_Facsimile_Telephone: 605/594-6589
      Contact_Electronic_Mail_Address: custserv@usgs.gov
      Hours_of_Service: 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
      Contact_Instructions:
        The USGS point of contact is for questions relating to the data display and download from this web site. For questions regarding data content and quality, refer to: <http://www.mrlc.gov/mrlc2k.asp> or email: mrlc@usgs.gov
  Browse_Graphic:
    Browse_Graphic_File_Name:
      <http://tdds.cr.usgs.gov/browse/nlcd/2001/landcover/states/NLCD2001_LC_Iowa.jpg>
    Browse_Graphic_File_Description: Tiled NLCD Browse Image
    Browse_Graphic_File_Type: JPEG
  Data_Set_Credit: U.S. Geological Survey
  Security_Information:
    Security_Classification_System: None
    Security_Classification: Unclassified
    Security_Handling_Description: N/A
  Native_Data_Set_Environment:
    Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4000

Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      The information on data quality for the NLCD 2001 Land Cover 2011 Edition was generated by the Decision Tree algorithm that conducts a cross-validation for assessing classification and prediction reliability. No formal independent accuracy assessment of the NLCD 2001 Land Cover 2011 Edition land cover has been made. The regression tree algorithm employed in NLCD 2001 mapping offers a cross-validation option for assessing classification and prediction reliability. Cross-validation can provide relatively reliable estimates for land cover predictions if the reference data used for cross-validation are collected based on a statistically valid sampling design. For the NLCD 2001 Land Cover 2011 Edition land cover modeling, a 5-fold cross-validation was conducted by dividing the entire training data set into 5 subsets of equal size. For each model run, an accuracy estimate was derived using one subset to evaluate the model prediction (with the model developed using the remaining training samples). This process was repeated 5 times. After all 5 runs, an average value of all accuracy estimates from the 5 runs were computed. Users should be cautioned that these cross-validation results provide users with only first-order estimates of data quality, and should not be considered a formal accuracy assessment. This land cover map and all documents pertaining to it are considered "provisional" until a formal accuracy assessment can be conducted.
    Quantitative_Attribute_Accuracy_Assessment:
      Attribute_Accuracy_Value: 78.7
      Attribute_Accuracy_Explanation:
        The value above represents the overall accuracy of the NLCD 2001 Land Cover Version 1.0 layer at Anderson Level II as reported in the following manuscript: Wickham, J. D., Stehman S. V., Fry, J. A., Smith, J. H., & Homer, C. G., (2010), Thematic accuracy of the NLCD 2001 land cover for the conterminous United States, Remote Sensing of Environment, 114, 1286 - 1296. An accuracy assessment of the revised portions of the NLCD 2001 Land Cover 2011 Edition layer has not been completed and those areas are considered provisional until a formal accuracy assessment has been completed. The U.S. Geological Survey can make no guarantee as to the accuracy or completeness of this information, and it is provided with the understanding that it is not guaranteed to be correct or complete. Conclusions drawn from this information are the responsibility of the user.
  Logical_Consistency_Report:
    The NLCD 2001 database for the NLCD 2001 Land Cover 2011 Edition consists of three main data products including: (1) per pixel classified land-cover data (2) sub-pixel percent imperviousness and (3) sub-pixel percent tree canopy density. Additional information may be found at <http://www.mrlc.gov/mrlc2k_nlcd.asp>.
  Completeness_Report: NLCD 2001 Land Cover 2011 Edition dated October 10, 2014.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: N/A
    Vertical_Positional_Accuracy:
      Vertical_Positional_Accuracy_Report: N/A
  Lineage:
    Process_Step:
      Process_Description:
        Process Step for NLCD 2001 Original Version: The land cover classification was achieved by use of a classification and decision tree method (DT) using a combination of Landsat imagery and ancillary data. The specific DT program employed is called C5, which implements a gain ratio criterion in tree development and pruning (Quinlan, 1993). C5 also implemented several advanced features that can aid and improve land cover classification, including boosting and cross-validation. Boosting is a technique for improving classification accuracy, while cross-validation can provide certain level of estimation regarding the land cover classification quality. In addition, C5 can generate a confidence estimate for each classified pixel and record the associated classification logic in a text file that can be readily interpreted and incorporated into a metadata system. To conduct the land cover classification using DT, a large quantity of training data is required. For the NLCD 2001 Land Cover, training data were collected from several combined sources. Note that the training data were used to map all land cover classes except for four classes in urban and sub-urban areas (developed open space, low intensity developed, medium intensity developed, high intensity developed). All urban and suburban land cover classes were mapped and quality assessed separately through a sub-pixel quantification of impervious surfaces using a regression tree modeling method. Following the development of the best classification through decision tree modeling, additional steps were required to complete the final land cover product. The four classes in urban and suburban areas were determined from the percent imperviousness mapping product (described in the next section). The threshold for the four classes is: (1) developed open space (imperviousness < 20%), (2) low-intensity developed (imperviousness from 20 - 49%), (3) medium intensity developed (imperviousness from 50 -79%), and (4) high-intensity developed (imperviousness > 79%). Other classes of forest and non-forest were combined with the urban classes to complete the land cover product. Finally visual inspection of the classification was made with areas/pixels that were wrongly classified delineated first as an "area of interest" (AOI), subsequently then limited manual editing was done to eliminate the classification error within the AOI. The completed single pixel product was then generalized to a 1 acre (approximately 5 ETM+ 30 m pixel patch) minimum mapping unit product using a "smart eliminate" algorithm. This aggregation program subsumes pixels from the single pixel level to a 5-pixel patch using a queens algorithm at doubling intervals. The algorithm consults a weighting matrix to guide merging of cover types by similarity, resulting in a product that preserves land cover logic as much as possible. For Landsat Scene Acquisition dates and identification numbers for imagery used in the NLCD 2001 land, please see: appendix2_nlcd2001_scene_list_by_zone.txt Landsat data and ancillary data used for the land cover prediction - Data Type of DEM composed of 1 band of Continuous Variable Type. Data Type of Slope composed of 1 band of Continuous Variable Type. Data Type of Aspect composed of 1 band of Categorical Variable Type. Data type of Position Index composed of 1 band of Continuous Variable Type.
      Source_Used_Citation_Abbreviation: Landsat ETM, DOQQ, USDA, FIA, DEM, USGS EROS, IKONOS
      Process_Date: Unknown
      Source_Produced_Citation_Abbreviation: USGS NLCD
    Process_Step:
      Process_Description:
        Process Step for NLCD 2001 Land Cover (2011 Edition): To improve NLCD imperviousness, the 2011 project included a process to reduce omission and commission error in NLCD 2001, 2006, and 2011 products. This activity was completed for urban areas in most of the eastern half of the conterminous United States. High resolution (one-meter ground sample distance) National Aerial Imagery Program (NAIP <http://fsa.usda.gov/FSA/>) imagery was used to verify imperviousness. Using hand-edits imperviousness was removed from areas incorrectly identified as developed and added to areas where developed land cover was missed. A modeling process was implemented to parse imperviousness changes to the correct era. These improvements were incorporated with the derived developed classes in all areas of imperviousness and land cover versions released with NLCD 2011 editions.
      Process_Date: Unknown
    Process_Step:
      Process_Description:
        Process Step for NLCD 2001 Land Cover (2011 edition, amended 2014): The release in 2014 of amended versions of land cover for 2001, 2006, and 2011 was made to correct for unintended differences between the impervious dataset and the four land cover developed classes (Open Space, Low Intensity, Medium Intensity, and High Intensity). NLCD developed classes are tied directly to the impervious product values. However, the land cover product Minimum Mapping Unit (MMU) is five pixels whereas the impervious product MMU is single pixel. This MMU difference creates problems when the impervious single pixel MMU product is directly crosswalked into the 5-pixel MMU land cover developed classes. The smoothing process, which generalizes the land cover product to a 5-pixel MMU, can create small areas which are no longer directly represented in the imperviousness product because they are artifacts of the smoothing. Since these changes are not real and not present in the impervious layer, the new version removes these artifacts and re-establishes the direct linkage between the imperviousness and land cover products for any developed area. Combined developed areas (all developed classes combined into a group) in the land cover product must still meet the 5-pixel MMU threshold; however, the four NLCD land cover individual developed classes within the group patch are now represented by a single pixel MMU to retain the direct linkage to the imperviousness product.
      Process_Date: Unknown

Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Raster
  Raster_Object_Information:
    Raster_Object_Type: Pixel
    Row_Count: 11671
    Column_Count: 17795
    Vertical_Count: 1

Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: Albers Conical Equal Area
        Albers_Conical_Equal_Area:
          Standard_Parallel: 29.500000
          Standard_Parallel: 45.500000
          Longitude_of_Central_Meridian: -96.000000
          Latitude_of_Projection_Origin: 23.000000
          False_Easting: 0.000000
          False_Northing: 0.000000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: row and column
        Coordinate_Representation:
          Abscissa_Resolution: 30.000000
          Ordinate_Resolution: 30.000000
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: Geodetic Reference System 80
      Semi-major_Axis: 6378137.0
      Denominator_of_Flattening_Ratio: 298.2572221

Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: nlcd_2001_landcover_2011_edition_2014_10_10.img.vat
      Entity_Type_Definition: NLCD Land Cover Layer
      Entity_Type_Definition_Source: National Land Cover Database
    Attribute:
      Attribute_Label: ObjectID
      Attribute_Definition: Internal feature number
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Sequential unique whole numbers that are automatically generated
    Attribute:
      Attribute_Label: Count
      Attribute_Definition:
        A nominal integer value that designates the number of pixels that have each value in the file; histogram column in ERDAS Imagine raster attributes table
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Integer
    Attribute:
      Attribute_Label: Value
      Attribute_Definition: Land Cover Class Code Value
      Attribute_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 11
          Enumerated_Domain_Value_Definition:
            Open Water - All areas of open water, generally with less than 25% cover or vegetation or soil
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 12
          Enumerated_Domain_Value_Definition:
            Perennial Ice/Snow - All areas characterized by a perennial cover of ice and/or snow, generally greater than 25% of total cover
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 21
          Enumerated_Domain_Value_Definition:
            Developed, Open Space - Includes areas with a mixture of some constructed materials, but mostly vegetation in the form of lawn grasses. Impervious surfaces account for less than 20 percent of total cover. These areas most commonly include large-lot single-family housing units, parks, golf courses, and vegetation planted in developed settings for recreation, erosion control, or aesthetic purposes.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 22
          Enumerated_Domain_Value_Definition:
            Developed, Low Intensity -Includes areas with a mixture of constructed materials and vegetation. Impervious surfaces account for 20-49 percent of total cover. These areas most commonly include single-family housing units.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 23
          Enumerated_Domain_Value_Definition:
            Developed, Medium Intensity - Includes areas with a mixture of constructed materials and vegetation. Impervious surfaces account for 50-79 percent of the total cover. These areas most commonly include single-family housing units.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 24
          Enumerated_Domain_Value_Definition:
            Developed, High Intensity - Includes highly developed areas where people reside or work in high numbers. Examples include apartment complexes, row houses and commercial/industrial. Impervious surfaces account for 80 to 100 percent of the total cover.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 31
          Enumerated_Domain_Value_Definition:
            Barren Land (Rock/Sand/Clay) - Barren areas of bedrock, desert pavement, scarps, talus, slides, volcanic material, glacial debris, sand dunes, strip mines, gravel pits and other accumulations of earthen material. Generally, vegetation accounts for less than 15% of total cover.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 41
          Enumerated_Domain_Value_Definition:
            Deciduous Forest - Areas dominated by trees generally greater than 5 meters tall, and greater than 20% of total vegetation cover. More than 75 percent of the tree species shed foliage simultaneously in response to seasonal change.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 42
          Enumerated_Domain_Value_Definition:
            Evergreen Forest - Areas dominated by trees generally greater than 5 meters tall, and greater than 20% of total vegetation cover. More than 75 percent of the tree species maintain their leaves all year. Canopy is never without green foliage. Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 43
          Enumerated_Domain_Value_Definition:
            Mixed Forest - Areas dominated by trees generally greater than 5 meters tall, and greater than 20% of total vegetation cover. Neither deciduous nor evergreen species are greater than 75 percent of total tree cover.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 51
          Enumerated_Domain_Value_Definition:
            Dwarf Scrub - Alaska only areas dominated by shrubs less than 20 centimeters tall with shrub canopy typically greater than 20% of total vegetation. This type is often co-associated with grasses, sedges, herbs, and non-vascular vegetation.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 52
          Enumerated_Domain_Value_Definition:
            Shrub/Scrub - Areas dominated by shrubs; less than 5 meters tall with shrub canopy typically greater than 20% of total vegetation. This class includes true shrubs, young trees in an early successional stage or trees stunted from environmental conditions.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 71
          Enumerated_Domain_Value_Definition:
            Grassland/Herbaceous - Areas dominated by grammanoid or herbaceous vegetation, generally greater than 80% of total vegetation. These areas are not subject to intensive management such as tilling, but can be utilized for grazing.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 72
          Enumerated_Domain_Value_Definition:
            Sedge/Herbaceous - Alaska only areas dominated by sedges and forbs, generally greater than 80% of total vegetation. This type can occur with significant other grasses or other grass like plants, and includes sedge tundra, and sedge tussock tundra.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 73
          Enumerated_Domain_Value_Definition:
            Lichens - Alaska only areas dominated by fruticose or foliose lichens generally greater than 80% of total vegetation.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 74
          Enumerated_Domain_Value_Definition:
            Moss - Alaska only areas dominated by mosses, generally greater than 80% of total vegetation.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 81
          Enumerated_Domain_Value_Definition:
            Pasture/Hay - Areas of grasses, legumes, or grass-legume mixtures planted for livestock grazing or the production of seed or hay crops, typically on a perennial cycle. Pasture/hay vegetation accounts for greater than 20 percent of total vegetation.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 82
          Enumerated_Domain_Value_Definition:
            Cultivated Crops - Areas used for the production of annual crops, such as corn, soybeans, vegetables, tobacco, and cotton, and also perennial woody crops such as orchards and vineyards. Crop vegetation accounts for greater than 20 percent of total vegetation. This class also includes all land being actively tilled.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 90
          Enumerated_Domain_Value_Definition:
            Woody Wetlands - Areas where forest or shrub land vegetation accounts for greater than 20 percent of vegetative cover and the soil or substrate is periodically saturated with or covered with water.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 95
          Enumerated_Domain_Value_Definition:
            Emergent Herbaceous Wetlands - Areas where perennial herbaceous vegetation accounts for greater than 80 percent of vegetative cover and the soil or substrate is periodically saturated with or covered with water.
          Enumerated_Domain_Value_Definition_Source: NLCD Legend Land Cover Class Descriptions
    Attribute:
      Attribute_Label: Red
      Attribute_Definition:
        Red color code for RGB. The value is arbitrarily assigned by the display software package, unless defined by user.
      Attribute_Definition_Source: NLCD
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
          Attribute_Units_of_Measure: Percentage
          Attribute_Measurement_Resolution: 0.1
    Attribute:
      Attribute_Label: Green
      Attribute_Definition:
        Green color code for RGB. The value is arbitrarily assigned by the display software package, unless defined by user.
      Attribute_Definition_Source: NLCD
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
          Attribute_Units_of_Measure: Percentage
          Attribute_Measurement_Resolution: 0.1
    Attribute:
      Attribute_Label: Blue
      Attribute_Definition:
        Blue color code for RGB. The value is arbitrarily assigned by the display software package, unless defined by user.
      Attribute_Definition_Source: NLCD
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
          Attribute_Units_of_Measure: Percentage
          Attribute_Measurement_Resolution: 0.1
    Attribute:
      Attribute_Label: Opacity
      Attribute_Definition:
        A measure of how opaque, or solid, a color is displayed in a layer.
      Attribute_Definition_Source: NLCD
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
          Attribute_Units_of_Measure: Percentage
          Attribute_Measurement_Resolution: 0.1
  Overview_Description:
    Entity_and_Attribute_Overview: Land Cover Class RGB Color Value Table
    Entity_and_Attribute_Detail_Citation:
      Attributes defined by USGS and ESRI. Value Red Green Blue 0 0.00000000000 0.00000000000 0.00000000000 11 0.27843137255 0.41960784314 0.62745098039 12 0.81960784314 0.86666666667 0.97647058824 21 0.86666666667 0.78823529412 0.78823529412 22 0.84705882353 0.57647058824 0.50980392157 23 0.92941176471 0.00000000000 0.00000000000 24 0.66666666667 0.00000000000 0.00000000000 31 0.69803921569 0.67843137255 0.63921568628 41 0.40784313726 0.66666666667 0.38823529412 42 0.10980392157 0.38823529412 0.18823529412 43 0.70980392157 0.78823529412 0.55686274510 51 0.64705882353 0.54901960784 0.18823529412 52 0.80000000000 0.72941176471 0.48627450980 71 0.88627450980 0.88627450980 0.75686274510 72 0.78823529412 0.78823529412 0.46666666667 73 0.60000000000 0.75686274510 0.27843137255 74 0.46666666667 0.67843137255 0.57647058824 81 0.85882352941 0.84705882353 0.23921568628 82 0.66666666667 0.43921568628 0.15686274510 90 0.72941176471 0.84705882353 0.91764705882 95 0.43921568628 0.63921568628 0.72941176471
  Overview_Description:
    Entity_and_Attribute_Overview: N/A
    Entity_and_Attribute_Detail_Citation:
      Attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section.

Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Position: Customer Services Representative
      Contact_Address:
        Address_Type: mailing and physical
        Address: USGS National Geospatial Program Office
        Address: 12201 Sunrise Valley Drive
        City: Reston
        State_or_Province: VA
        Postal_Code: 20192
        Country: USA
      Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747)
      Contact_Electronic_Mail_Address: tnm_help@usgs.gov
      Hours_of_Service: Monday through Friday 8:00 AM to 4:00 PM Eastern Time Zone USA
      Contact_Instructions: Please visit <http://www.usgs.gov/ask/> to contact us.
  Resource_Description: Downloadable Data
  Distribution_Liability:
    Although these data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made by the USGS regarding the use of the data on any other system, nor does the act of distribution constitute any such warranty. Data may have been compiled from various outside sources. Spatial information may not meet National Map Accuracy Standards. This information may be updated without notification. The USGS shall not be liable for any activity involving these data, installation, fitness of the data for a particular purpose, its use, or analyses results.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: TIFF
        Transfer_Size: 19.746675
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name:
                <http://gisdata.usgs.gov/tdds/downloadfile.php?TYPE=nlcd2001_lc_state&ORIG=META&FNAME=NLCD2001_LC_Iowa.zip>
          Access_Instructions:
            The URL <http://nationalmap.gov/viewer.html> provides a map interface that allows for viewing and data downloads within a customer defined area of interest. Zoom tools are available that can be used to investigate areas of interest on the map interface. The download tool allows the customer to capture layers from the map, utilizing The National Map process for downloading. The file can be unzipped and imported into various user software applications.
          Online_Computer_and_Operating_System: Not available for dissemination
    Fees: None
    Turnaround: Variable
  Technical_Prerequisites:
    ESRI ArcGIS Suite and/or Arc/Info or other compatible software, and supporting operating systems.
  Available_Time_Period:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 2014
        Ending_Date: Unknown

Metadata_Reference_Information:
  Metadata_Date: 20141205
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Customer Services Representative
      Contact_Position: Customer Services Representative
      Contact_Address:
        Address_Type: mailing and physical
        Address: USGS EROS
        Address: 47914 252nd Street
        City: Sioux Falls
        State_or_Province: SD
        Postal_Code: 57198-0001
        Country: USA
      Contact_Voice_Telephone: 605/594-6151
      Contact_TDD/TTY_Telephone: 605/594-6933
      Contact_Facsimile_Telephone: 605/594-6589
      Contact_Electronic_Mail_Address: custserv@usgs.gov
      Hours_of_Service: 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
  Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Access_Constraints: None
  Metadata_Use_Constraints: None

Generated by `mp` version 2.9.12 on Wed Jan 14 11:32:46 2015