Watershed boundaries for SAA SAA Version 3.0 Version Date: 3/21/96 --------------------------------------------------------------------------- ------------------------------------------------------------------------ Identification Information Data Layer Name: Watershed boundaries for SAA Description: This data layer includes boundaries of the hydrologic cataloging units for all States in Southern Appalachian Assessment (SAA) Region Keywords: watershed, hydrologic units, hydrologic unit codes, HUC, hydrology, drainage basin Citation: none Native Data Set Environment: Unix; Arc/Info 7.0.3 pathname: Scale: 1:2,500,000 File Format: ARC/INFO Polygon coverage Use Restrictions: none Access Restrictions: none ------------------------------------------------------------------------ -------------------------------------------------------------------- Spatial Reference Information COORDINATE SYSTEM DESCRIPTION Projection ALBERS Datum NAD83 Units METERS Spheroid GRS1980 Parameters: 1st standard parallel 34 0 0.000 2nd standard parallel 38 0 0.000 central meridian -82 0 0.000 latitude of projection's origin 33 0 0.000 false easting (meters) 0.00000 false northing (meters) 0.00000 Extent: West Bounding Coord.: -481955.469 East Bounding Coord.: 459652.250 North Bounding Coord.: 811654.562 South Bounding Coord.: -50319.410 Distance Resolution: unknown Vertical Resolution: n/a -------------------------------------------------------------------- --------------------------------------------------------------------------- Data Quality Information Thematic Accuracy: unknown Confidence: unknown Accuracy Method: Horizontal Accuracy: unknown Confidence: unknown Accuracy Method: unknown Vertical Accuracy: n/a Logical Consistency: Completeness: --------------------------------------------------------------------------- -------------------------------------------------------------------------- Source Information Source Material: Digitized Hydrologic Units for the United States at a scale of 1:2,500,000. Organization: U.S.G.S. Date: 1985 Distance Resolution: unknown Contribution: Hydrologic unit boundaries and codes Source Material: Codes for the Identification of hydrologic units in the United States and the Caribbean outlying areas. Organization: U.S.G.S. Date: 1982 Distance Resolution: n/a Contribution: Hydrologic unit coding scheme description Source Material: Hydrologic Unit Map of the United States: scale 1:2,500,000; 2 sheets. Organization: U.S.G.S. Date: 1980 Distance Resolution: unknown Contribution: Original source document for digitized hydrologic unit map -------------------------------------------------------------------------- ----------------------------------------------------------------------- Processing History Information Process Description: ARC/INFO coverage acquired from USGS by EPA. SAA acquired data from EPA and converted to SAA Albers. ----------------------------------------------------------------------- --------------------------------------------------------------------- Entity/Attribute Information Entity: WATERSHD.PAT Definition: Watershed Polygons Attributes: COL ITEM NAME WDTH OPUT TYP N.DEC DEFINITION 1 AREA 4 12 F 3 Area in square meters per polygon 5 PERIMETER 4 12 F 3 Perimeter in meters per polygon 9 WATERSHD# 4 5 B - Internal polygon identification number 13 WATERSHD-ID 4 5 B - User-defined polygon identification number 17 HUC 8 8 I - Hydrologic unit cataloging code (integer format) 25 NAME 60 60 C - Hydrologic unit catalog name 85 ACRES 8 8 F 2 Number of acres per cataloging unit (calculated from Area) 93 HUC8 8 8 C - Hydrologic unit cataloging code (character format) ** REDEFINED ITEMS ** 17 HUC2 2 2 I - Hydrologic unit region code 17 HUC4 4 4 I - Hydrologic unit subregion code 17 HUC6 6 6 I - Hydrologic unit accounting code See Volume 2 for information about the hydrologic unit coding scheme (region, subregion, accounting, and cataloging unit codes). See Volume 2 for more information on BNDTYPE. Entity: SHEDS.TIC Attributes: COL ITEM NAME WDTH OPUT TYP N.DEC DEFINITION 1 IDTIC 4 5 B - User-defined tic identification number 5 XTIC 4 12 F 3 X coordinate for tic 9 YTIC 4 12 F 3 Y coordinate for tic Entity: SHEDS.BND Definition: Watershed Boundary Coverage Bounding Coordinates Attributes: COL ITEM NAME WDTH OPUT TYP N.DEC DEFINITION 1 XMIN 4 12 F 3 Minimum x-coordinate in coverage 5 YMIN 4 12 F 3 Minimum y-coordinate in coverage 9 XMAX 4 12 F 3 Maximum x-coordinate in coverage 13 YMAX 4 12 F 3 Maximum y-coordinate in coverage --------------------------------------------------------------------- ------------------------------- Status Information Data Set Status: Available Release Date: 3/21/96 ------------------------------- ----------------------------------------- Metadata Reference Information Date: 3/20/96 Review Date: Contact: Karl A. Hermann National Biological Service Cooperative University of Tennessee 17 Ridgeway Road Norris, TN 37828 samab@utk.edu (423)-632-1452 ---------------------------------------------------------------- ---------------------------------------------------------------- Distribution Information Distribution Contact: Karl A. Hermann National Biological Service Cooperative University of Tennessee 17 Ridgeway Road Norris, TN 37828 samab@utk.edu (423)-632-1452 Distribution Liability: File Compression Technique: UNIX compress, Arc/Info export format Transfer Size: --------------------------------------------------------------- ----------------------------------------------------------------- --------------------------------------------------------------- Contact Information Contact Person: Karl A. Hermann Contact Mail Address: National Biological Service Cooperative University of Tennessee 17 Ridgeway Road Norris, TN 37828 Contact Phone: (423)-632-1452 Contact Fax: (423)-632-1612 Contact email: samab@www.lib.utk Home Page for Updates: http://www.lib.utk.edu/samab ---------------------------------------------------------------- ----------------------------------------------------------------