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The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" "Standard" (https://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level)...
Tags: 10-digit, 12-digit, 14-digit, 16-digit, 2-digit, All tags...
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Layers of geospatial data include roads, airports, trails, and railroads.
Tags: Accomack, Airport Complex, Airport Point, Airport Runway, Airports, All tags...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Accomack, Administrative watershed units, Administrative watershed units, Albemarle, Alexandria, All tags...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, All tags...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Administrative watershed units, Administrative watershed units, Alamance, Appomattox, Area of Complex Channels, All tags...
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This data release contains three 10-meter resolution GeoTIFFs representing 10-meter (35-foot), 30-meter (100-foot) and 90-meter (300-foot) riparian buffer zones along shorelines, rivers, streams, and other lotic (flowing) water features. The layers are binary, where the value of each cell represents the presence or absence of the buffer zone. In addition, the data release contains shapefile layers that document the extent of corrections that were made to the data to address errors in the stream network (see processing steps section for more details). The methodology combines various fine-scale input layers, including a 1:24k stream network and Chesapeake Bay 1-meter resolution Land Use/Land Cover to approximate...
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Tree growth (annual tree ring measurements) and plant community composition data of tidal freshwater forested wetlands along longitudinal riverine positions (upper, lower, and stressed tidal river sites, and nearby upstream non-tidal forested floodplains) of the adjoining Pamunkey and Mattaponi Rivers, Virginia.
These tabular data are summaries of land use/land cover related variables within catchments of the Chesapeake Bay watershed using the Xstrm methodology at 1:24,000 scale. Variables being counted as land use/land cover related contain all land use and land cover data including datasets that are split off or combined from those data (eg. agriculture or impervious classes only datasets). Outputs consist of tabular comma-separated values files (CSVs) for both the local catchment and network summaries linked to the National Hydrography Dataset Plus High-Resolution (NHDPlus HR) framework by NHDPlus ID. Local catchments are defined as the single catchment the data is summarized within. Network accumulation summaries were...
Categories: Data; Tags: Agriculture, Aquatic Biology, Catchment, Catchments, Chesapeake, All tags...
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The Chesapeake Bay Land Use and Land Cover Database (LULC) facilitates characterization of the landscape and land change for and between discrete time periods. The database was developed by the University of Vermont’s Spatial Analysis Laboratory in cooperation with Chesapeake Conservancy (CC) and U.S. Geological Survey (USGS) as part of a 6-year Cooperative Agreement between Chesapeake Conservancy and the U.S. Environmental Protection Agency (EPA) and a separate Interagency Agreement between the USGS and EPA to provide geospatial support to the Chesapeake Bay Program Office. The database contains one-meter 13-class Land Cover (LC) and 54-class Land Use/Land Cover (LULC) for all counties within or adjacent to the...
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Geospatial data is comprised of government boundaries.
Tags: Accomack, Albemarle, Alexandria, Alleghany, Amelia, All tags...


map background search result map search result map USGS Topo Map Vector Data (Vector) 23233 Kempsville VA (published 20240103) Shapefile USGS Topo Map Vector Data (Vector) 23233 Kempsville VA (published 20240103) FileGDB USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20240111) FileGDB USGS 1:24000-scale Quadrangle for Chesapeake, MO 1969 Data on Tree Growth and Plant Community Composition in Mid-Atlantic Tidal Freshwater Forested Wetlands USGS US Topo 7.5-minute map for Bowers Hill, VA 2016 USGS US Topo 7.5-minute map for Creeds, VA-NC 2013 USGS US Topo 7.5-minute map for Creeds, VA-NC 2016 USGS US Topo 7.5-minute map for Fentress, VA 2016 USGS US Topo 7.5-minute map for Kempsville, VA 2013 USGS US Topo 7.5-minute map for Lake Drummond, VA-NC 2013 USGS US Topo 7.5-minute map for Pleasant Ridge, VA 2013 USGS National Hydrography Dataset Best Resolution (NHD) - Virginia (published 20231227) Shapefile USGS National Transportation Dataset (NTD) for Virginia (published 20240216) GeoPackage USGS National Boundary Dataset (NBD) in Virginia State or Territory (published 20240215) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 0301 (published 20231213) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 02080208 (published 20231215) GeoPackage Chesapeake Bay Land Use and Land Cover (LULC) Database 2022 Edition Chesapeake Bay Watershed 1:24k 10, 30 and 90-meter Riparian Buffer Zones USGS Topo Map Vector Data (Vector) 23233 Kempsville VA (published 20240103) Shapefile USGS Topo Map Vector Data (Vector) 23233 Kempsville VA (published 20240103) FileGDB USGS 1:24000-scale Quadrangle for Chesapeake, MO 1969 USGS US Topo 7.5-minute map for Bowers Hill, VA 2016 USGS US Topo 7.5-minute map for Creeds, VA-NC 2013 USGS US Topo 7.5-minute map for Creeds, VA-NC 2016 USGS US Topo 7.5-minute map for Fentress, VA 2016 USGS US Topo 7.5-minute map for Kempsville, VA 2013 USGS US Topo 7.5-minute map for Lake Drummond, VA-NC 2013 USGS US Topo 7.5-minute map for Pleasant Ridge, VA 2013 Data on Tree Growth and Plant Community Composition in Mid-Atlantic Tidal Freshwater Forested Wetlands USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 02080208 (published 20231215) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 0301 (published 20231213) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) - Virginia (published 20231227) Shapefile USGS National Transportation Dataset (NTD) for Virginia (published 20240216) GeoPackage USGS National Boundary Dataset (NBD) in Virginia State or Territory (published 20240215) GeoPackage Chesapeake Bay Watershed 1:24k 10, 30 and 90-meter Riparian Buffer Zones Chesapeake Bay Land Use and Land Cover (LULC) Database 2022 Edition USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20240111) FileGDB