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The LakeCat Dataset: Accumulated Attributes for NHDPlusV2 (Version 2.1) Catchments for the Conterminous United States: National Elevation Dataset
This dataset represents the elevation values within individual local and accumulated upstream catchments for NHDPlusV2 Waterbodies based on the National Elevation Dataset. Catchment boundaries in LakeCat are defined in one of two ways, on-network or off-network. The on-network catchment boundaries follow the catchments provided in the NHDPlusV2 and the metrics for these lakes mirror metrics from StreamCat, but will substitute the COMID of the NHDWaterbody for that of the NHDFlowline. The off-network catchment framework uses the NHDPlusV2 flow direction rasters to define non-overlapping lake-catchment boundaries and then links them through an off-network flow table. NHDPlusV2 records NED snapshot dates as follows: August 2010 - VPU04 February 2011 - VPUs 05, 06 June 2011 - VPU 17 August 2011 - VPUs 07, 10L, 10U, 11, 18 December 2011 - VPUs 01, 02, 03N, 03S, 03W, 08, 09, 12, 13, 14, 15, 16 The elevation characteristics were summarized to produce local catchment-level and watershed-level metrics as a continuous data type.
Complete Metadata
| bureauCode |
[ "020:00" ] |
|---|---|
| dataQuality | true |
| describedBy | https://www.epa.gov/national-aquatic-resource-surveys/lakecat-metrics-and-definitions |
| describedByType | text/html |
| identifier | FD387D2B-CCD3-4D17-ACDE-A9A8426CA1CA |
| issued | 2015-04-23 |
| landingPage | https://www.epa.gov/national-aquatic-resource-surveys/lakecat-dataset |
| language |
[ "en-US" ] |
| programCode |
[ "020:072" ] |
| references |
[ "https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=FD387D2B-CCD3-4D17-ACDE-A9A8426CA1CA", "https://www.epa.gov/node/276204" ] |
| rights | public (Data asset is or could be made publicly available to all without restrictions) |
| spatial | -125.0,24.5,-66.5,49.5 |
| temporal | 2015/2030 |
| theme |
[ "environment" ] |
