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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...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: AL, Administrative watershed units, Alabama, Alcorn County, Area of Complex Channels, All tags...
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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The U.S. Geological Survey, in cooperation with the Savannah Valley Utility District, evaluated the groundwater hydrology of the Valley and Ridge carbonate aquifer system of Cambrian-Ordovician age in the area of Savannah and Gunstocker Creeks in northeastern Hamilton, southern Meigs, and northwestern Bradley Counties, Tennessee, from 2007 through 2009. The evaluation included and built on: 1) the results of test drilling conducted in the area in 1974 to determine the potential for groundwater as a source of public supply for the utility, and 2) the results of an investigation conducted to define recharge areas for wells used by groundwater-source public-supply water systems throughout Hamilton County in the early...
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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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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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: AL, Administrative watershed units, Administrative watershed units, Alabama, Area of Complex Channels, 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: AR, Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, All tags...


map background search result map search result map USGS National Hydrography Dataset (NHD) Best Resolution for Alabama 20160411 State or Territory FileGDB 10.1 - Flowlines USGS Topo Map Vector Data (Vector) 3379 Benton TN (published 20221019) Shapefile USGS Topo Map Vector Data (Vector) 3970 Birchwood TN (published 20221019) FileGDB USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20221206) FileGDB USGS Topo Map Vector Data (Vector) 26525 Longview, Arkansas 20200915 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 27612 Marais Saline, Arkansas 20200916 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 28455 McKinney, Arkansas 20200915 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 29442 Milo, Arkansas 20200916 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 30266 Moro Bay, Arkansas 20200916 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 46865 Vick, Arkansas 20200915 for 7.5 x 7.5 minute Shapefile USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 08040201 (published 20230107) FileGDB USGS US Topo 7.5-minute map for Charleston, TN 2019 USGS US Topo 7.5-minute map for Artesian, AR 2020 USGS US Topo 7.5-minute map for Wilmar North, AR 2020 Geospatial data for groundwater potentiometric-surface maps in northeastern Hamilton, southern Meigs, and northwestern Bradley Counties, Tennessee, fall 1992, spring and fall 1993, summer 2008, and spring 2009 USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 0315 (published 20230108) GeoPackage US Topo 7.5-minute map for Charleston, TN USGS Topo Map Vector Data (Vector) 15127 Felker TN (published 20221019) GeoPackage USGS Topo Map Vector Data (Vector) 6728 Calhoun TN (published 20221019) GeoPackage USGS Topo Map Vector Data (Vector) 8201 Charleston TN (published 20221019) GeoPackage USGS Topo Map Vector Data (Vector) 3379 Benton TN (published 20221019) Shapefile USGS Topo Map Vector Data (Vector) 3970 Birchwood TN (published 20221019) FileGDB USGS Topo Map Vector Data (Vector) 26525 Longview, Arkansas 20200915 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 27612 Marais Saline, Arkansas 20200916 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 28455 McKinney, Arkansas 20200915 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 29442 Milo, Arkansas 20200916 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 30266 Moro Bay, Arkansas 20200916 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 46865 Vick, Arkansas 20200915 for 7.5 x 7.5 minute Shapefile USGS US Topo 7.5-minute map for Charleston, TN 2019 USGS US Topo 7.5-minute map for Artesian, AR 2020 USGS US Topo 7.5-minute map for Wilmar North, AR 2020 US Topo 7.5-minute map for Charleston, TN USGS Topo Map Vector Data (Vector) 15127 Felker TN (published 20221019) GeoPackage USGS Topo Map Vector Data (Vector) 6728 Calhoun TN (published 20221019) GeoPackage USGS Topo Map Vector Data (Vector) 8201 Charleston TN (published 20221019) GeoPackage Geospatial data for groundwater potentiometric-surface maps in northeastern Hamilton, southern Meigs, and northwestern Bradley Counties, Tennessee, fall 1992, spring and fall 1993, summer 2008, and spring 2009 USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 08040201 (published 20230107) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 0315 (published 20230108) GeoPackage USGS National Hydrography Dataset (NHD) Best Resolution for Alabama 20160411 State or Territory FileGDB 10.1 - Flowlines USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20221206) FileGDB