Topographic Wetness Indexes for the Upper and Lower Colorado River Basins
This U.S. Geological Survey (USGS) data release describes two 30-meter (m) raster datasets of topographic wetness indexes (TWI) for the Upper and Lower Colorado River basins. The data reside in GeoTIFF (Geographic Tagged Imaged File Format) multiplied by 10 and saved as an integer file to reduce space (colorado14_twX100i.tif and colorado15_twiX100.tif). The TWI units are dimensionless. The dataset resides in the Albers96 NAD83 projection. The source data used were 30-meter digital elevation (DEM) models from the NHDplus Version 2 data suite (U.S. Environmental Protection Agency, 2012).
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "Michael E. Wieczorek", "@type": "vcard:Contact", "hasEmail": "mailto:mewieczo@usgs.gov" } |
| description | This U.S. Geological Survey (USGS) data release describes two 30-meter (m) raster datasets of topographic wetness indexes (TWI) for the Upper and Lower Colorado River basins. The data reside in GeoTIFF (Geographic Tagged Imaged File Format) multiplied by 10 and saved as an integer file to reduce space (colorado14_twX100i.tif and colorado15_twiX100.tif). The TWI units are dimensionless. The dataset resides in the Albers96 NAD83 projection. The source data used were 30-meter digital elevation (DEM) models from the NHDplus Version 2 data suite (U.S. Environmental Protection Agency, 2012). |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P13MXKUZ", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.67e1907fd34ee7f142216543.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_67e1907fd34ee7f142216543 |
| keyword |
[ "Colorado River basin", "Hydrologic modeling", "USGS:67e1907fd34ee7f142216543", "aspect", "digital elevation models", "elevation", "geographic information systems (GIS)", "hydrologic response units (HRUs)", "inlandWaters", "slope", "topographic wetness index" ] |
| modified | 2025-06-24T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -117.8536, 30.2949, -104.5933, 43.8116 |
| theme |
[ "geospatial" ] |
| title | Topographic Wetness Indexes for the Upper and Lower Colorado River Basins |
