The LakeCat Dataset: Accumulated Attributes for NHDPlusV2 (Version 2.1) Catchments for the Conterminous United States: National Land Cover Database - Impervious Surfaces

Published by U.S. Environmental Protection Agency, Office of Research and Development (ORD), Center for Public Health and Environmental Assessment (CPHEA), Pacific Ecological Systems Division (PESD), | U.S. Environmental Protection Agency | Metadata Last Checked: July 13, 2025 | Last Modified: 2023-11-13

This dataset represents the impervious surface coefficients within individual local and accumulated upstream catchments for NHDPlusV2 Waterbodies based on the National Land Cover Data. AOI 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-AOI boundaries and then links them through an off-network flow table. This data set is derived from the NLCD Impervious Surfaces raster which describes percent imperviousness (continuous data type). Values indicate the degree to which the area is composed of impervious anthropogenic materials (e.g., parking surfaces, roads, building roofs). This raster was produced based on a decision-tree classification of 2001, 2004, 2006, 2008, 2011, 2013, 2016, and 2019 Landsat satellite data. This dataset will include additional years as they become available.

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Complete Metadata

bureauCode	[ "020:00" ]
dataQuality	true
describedBy	https://www.epa.gov/national-aquatic-resource-surveys/lakecat-metrics-and-definitions
describedByType	text/html
identifier	43F2C9A2-4F0F-4603-928B-5DF138EDDB96
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=43F2C9A2-4F0F-4603-928B-5DF138EDDB96", "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" ]

Location