Percent impervious surface for selected Chesapeake Bay watersheds

This dataset contains watershed means of estimated percent impervious surfaces for three time periods: 1992, 2002, and 2012. Estimates are based on coefficients derived from comparing land use of the 2012 NAWQA Wall-to-wall Anthropogenic Land-use Trends (NWALT) product to the 2011 National Land Cover Database (NLCD) imperviousness, then applying those coefficients to previous years (1974-2002) of the NWALT dataset.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
datagov_dedupe_retained 20220721183729
identifier USGS:577d689ee4b0ef4d2f43b473
metadata_type geospatial
modified 20200818
old-spatial {"type": "Polygon", "coordinates": [[[-80.55161394556775, 36.62479659512296], [-80.55161394556775, 43.55759203025379], [ -74.2272808505554, 43.55759203025379], [ -74.2272808505554, 36.62479659512296], [-80.55161394556775, 36.62479659512296]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 1397d1afd8252f4e1490b7f7809bd712780b0c30
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-80.55161394556775, 36.62479659512296], [-80.55161394556775, 43.55759203025379], [ -74.2272808505554, 43.55759203025379], [ -74.2272808505554, 36.62479659512296], [-80.55161394556775, 36.62479659512296]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • chesapeake-bay
  • ckan
  • delaware
  • district-of-columbia
  • geo
  • geoss
  • impervious-surfaces
  • james-river
  • maryland
  • national
  • new-york
  • north-america
  • pennsylvania
  • potomac-river
  • rappahannock-river
  • surface-water-quality
  • susquehanna-river
  • united-states
  • usgs-577d689ee4b0ef4d2f43b473
  • virginia
  • west-virginia
isopen False
license_id notspecified
license_title License not specified
maintainer Karen R. Ryberg
maintainer_email kryberg@usgs.gov
metadata_created 2025-11-22T02:04:29.654113
metadata_modified 2025-11-22T02:04:29.654117
notes This dataset contains watershed means of estimated percent impervious surfaces for three time periods: 1992, 2002, and 2012. Estimates are based on coefficients derived from comparing land use of the 2012 NAWQA Wall-to-wall Anthropogenic Land-use Trends (NWALT) product to the 2011 National Land Cover Database (NLCD) imperviousness, then applying those coefficients to previous years (1974-2002) of the NWALT dataset.
num_resources 2
num_tags 23
title Percent impervious surface for selected Chesapeake Bay watersheds