YELL VEG LAND COVER

<p><a style='background-color:rgb(255, 255, 255); border:0px solid currentcolor; box-sizing:border-box; color:rgb(0, 97, 155); font-family:&quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; line-height:1.5; text-align:left; text-decoration:none; text-indent:0px; text-transform:none; word-spacing:0px;' target='_blank' href='https://irma.nps.gov/DataStore/Reference/Profile/2310646' rel='nofollow ugc noopener noreferrer'>IRMA Data Store Reference</a></p><p>This is land use/ land cover digital data for Yellowstone National Park (YELL) in Wyoming, Montana, and Idaho&nbsp; collected by USGS and converted to ARC/INFO by the EPA. These&nbsp; data are useful for environmental assessment of land use&nbsp; patterns with respect to water quality analysis, growth&nbsp; management, and other types of environmental impact&nbsp; assessment.&nbsp; Use may be limited due to currency.&nbsp; &nbsp; Land use and land cover data (LU/LC) collected by the USGS NMD is useful&nbsp; for environmental assessment of land use patterns with respect to&nbsp; water quality analysis, growth management, and other types of&nbsp; environmental impact assessment.&nbsp; &nbsp; Data are meant to be used by quadrangle, or among adjacent quadrangles&nbsp; where temporally contiguous.&nbsp; Can be used in any geographic application&nbsp; where intermediate scale land use data are appropriate and the dates&nbsp; are representative.&nbsp; &nbsp; Each quadrangle of land use data has a different representative date.&nbsp; Date ranges from mid 1970s to early 1980s are common. When joined togethr&nbsp; these quadrangles will not likely match along edges due to differences in&nbsp; interpretation and time coverage.&nbsp; Edges of each map file were manually&nbsp; digitized and may not join neighboring maps. If GIRASNEAT program hasbeen&nbsp; applied (see LOG at end) then edges have been mathematically recalculated&nbsp; to join without overlap or gaps in coverage with adjacent maps.&nbsp; &nbsp; The GIRAS series can include several themes of spatial data.&nbsp; The most&nbsp; common, described here, is the land use and land cover data.&nbsp; Land use&nbsp; was mapped and coded using the Anderson classification system (Anderson&nbsp; others,1976) which is a hierarchical system of general (level 1) to more&nbsp; specific (level 2) characterization.&nbsp; Some agencies have taken this to a&nbsp; level 3 classification -- but this has not been done in the GIRAS series.&nbsp; &nbsp; The salient attribute managed for this polygon data set in the polygon&nbsp; attribute table (PAT) is the column named LUCODE containing the Anderson&nbsp; level 2 classification.&nbsp; The first digit represents the level one value&nbsp; and the second digit (ones place) represents the subdivision of the level&nbsp; 1 or level 2 value.&nbsp; &nbsp; The Anderson land use codes are:&nbsp; 1&nbsp; Urban or built-up land&nbsp; 11 Residental&nbsp; 12 Commercial and services&nbsp; 13 Industrial&nbsp; 14 Transportation, communication, utilities&nbsp; 15 Industrial and commercial complexes&nbsp; 16 Mixed urban or built-up land&nbsp; 17 Other urban or built-up land&nbsp; 2&nbsp; Agricultural land&nbsp; 21 Cropland and pasture&nbsp; 22 Orchards, groves, vineyards, nurseries, and ornamental horticultural&nbsp; 23 Confined feeeding operations&nbsp; 24 Other agricultural land&nbsp; 3&nbsp; Rangeland&nbsp; 31 Herbaceous rangeland&nbsp; 32 Shrub and brush rangeland&nbsp; 33 Mixed rangeland&nbsp; 4&nbsp; Forest land&nbsp; 41 Deciduous forest land&nbsp; 42 Evergreen forest land&nbsp; 43 Mixed forest land&nbsp; 5&nbsp; Water&nbsp; 51 Streams and canals&nbsp; 52 Lakes&nbsp; 53 Reservoirs&nbsp; 54 Bays and estuaries&nbsp; 6&nbsp; Wetland&nbsp; 61 Forested wetland&nbsp; 62 Nonforested wetland&nbsp; 7&nbsp; Barren land&nbsp; 71 Dry salt flats&nbsp; 72 Beaches&nbsp; 73 Sandy areas not beaches&nbsp; 74 Bare exposed rock&nbsp; 75 Strip mines, quarries, gravel pits&nbsp; 76 Transitional areas&nbsp; 8&nbsp; Tundra&nbsp; 81 Shrub and brush tundra&nbsp; 82 Herbaceous tundra&nbsp; 83 Bare ground&nbsp; 84 Wet tundra&nbsp; 85 Mixed tundra&nbsp; 9&nbsp; Perennial snow or ice&nbsp; 91 Perennial snowfields&nbsp; 92 Glaciers&nbsp; &nbsp; GIRAS files are received by the USGS in 9-track ASCII format, one file&nbsp; per quadrangle.&nbsp; Files are loaded onto the hard disk of the computer&nbsp; from tape.&nbsp; Data are then processed with the GIRASARC2 program written in&nbsp; Arc Macro Language, part of the ARC/INFO geographic information system.&nbsp; This program was written by the USGS Water Resources Division to process&nbsp; the data into a consistent ARC/INFO format with a minimum of intervention.&nbsp; &nbsp; This GIRASARC2 AML&nbsp; &nbsp;program does the following:&nbsp; -- Converts the GIRAS data to ARC/INFO&nbsp; -- Reconstructs topology, creating line and polygon features&nbsp; -- Transforms the coverage into UTM and then, optionally into Albers&nbsp; Equal Area, using the registration points listed in the GIRAS file&nbsp; -- Notes transformation error, writing it to the bottom of the narrative&nbsp; file.&nbsp; -- Generates a synthetic neatline based on the mathematically-determined&nbsp; corners of the map&nbsp; -- Loads available documentation into a series of companion documentation&nbsp; files with each data set.&nbsp; -- Data may then be clipped against or extended to the synthetic neatline&nbsp; for ease in merging adjacent maps at a later date&nbsp; &nbsp; A GIRASNEAT AML&nbsp; &nbsp;program does the following:&nbsp; --standardize processing of coverages after use of girasarc2 AML,&nbsp; --clips in-cover with neatline cover,&nbsp; --dissolves polygon boundaries between polygon with the same item attribute&nbsp; --snaps exterior arcs to the arcs of the neatline cover with a tolerance of&nbsp; 40 meters&nbsp; &nbsp; Original conversion from GIRAS to ARC&nbsp; (see LOG for date and user ID)&nbsp; &nbsp; Data are reviewed visually by the user responsible for executing the&nbsp; GIRASARC2 program.&nbsp; &nbsp; The GIRASARC2 and GIRASNEAT programs were executed in Arc Macro Language&nbsp; to create this data set.&nbsp; The DOCUMENT AML (version 1.0) was used to&nbsp; manage the documentation and create this metadata file.</p><p><span style='background-color:rgb(255,255,255); color:rgb(74,74,74); font-family:&quot;Avenir Next&quot;; font-size:16px;'><span style='display:inline !important; float:none; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;'>NPS Open Data Reference: </span></span><a target='_blank' href='https://public-nps.opendata.arcgis.com/datasets/18587c9db1f9402692aac189a8d73696_0/explore?location=44.577392%2C-110.497407%2C9' rel='nofollow ugc noopener noreferrer'>YELL VEG LAND COVER | National Park Service</a></p>