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These vector contour lines are derived from the 3D Elevation Program using automated and semi-automated processes. They were created to support 1:24,000-scale CONUS and Hawaii, 1:25,000-scale Alaska, and 1:20,000-scale Puerto Rico / US Virgin Island topographic map products, but are also published in this GIS vector format. Contour intervals are assigned by 7.5-minute quadrangle, so this vector dataset is not visually seamless across quadrangle boundaries. The vector lines have elevation attributes (in feet above mean sea level on NAVD88), but this dataset does not carry line symbols or annotation.
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This data release contains coastal wetland synthesis products for the geographic region of Blackwater, Chesapeake Bay, Maryland. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and others, are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with tools to estimate the vulnerability and ecosystem service potential of these wetlands. For this purpose, the response and resilience...
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This data release contains coastal wetland synthesis products for the geographic region of Blackwater salt marsh complex, Chesapeake Bay, Maryland. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and others, are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with tools to estimate the vulnerability and ecosystem service potential of these wetlands. For this purpose, the...
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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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These vector contour lines are derived from the 3D Elevation Program using automated and semi-automated processes. They were created to support 1:24,000-scale CONUS and Hawaii, 1:25,000-scale Alaska, and 1:20,000-scale Puerto Rico / US Virgin Island topographic map products, but are also published in this GIS vector format. Contour intervals are assigned by 7.5-minute quadrangle, so this vector dataset is not visually seamless across quadrangle boundaries. The vector lines have elevation attributes (in feet above mean sea level on NAVD88), but this dataset does not carry line symbols or annotation.
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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 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: Accomack County, Adams County, Administrative watershed units, Alamance County, Albemarle County, 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 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 County, 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 West Virginia 20160414 State or Territory FileGDB 10.1 - HUC Watersheds USGS Topo Map Vector Data (Vector) 11880 Delmar, Maryland 20201007 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 27655 Mardela Springs, Maryland 20201007 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 27655 Mardela Springs, Maryland 20201007 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 31300 Nanticoke, Maryland 20201007 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 32144 Ninepin Branch, Maryland 20201007 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 40815 Sharptown, Maryland 20201007 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 72035 Whaleyville, Maryland 20201007 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 48486 Wetipquin, Maryland 20201007 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 72035 Whaleyville, Maryland 20201007 for 7.5 x 7.5 minute Shapefile USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 02080111 (published 20220109) USGS NED 1/3 arc-second Contours for Salisbury W, Maryland 20191212 1 X 1 degree Shapefile USGS NED 1/3 arc-second Contours for Salisbury W, Maryland 20191212 1 X 1 degree FileGDB 10.1 USGS US Topo 7.5-minute map for Delmar, MD,DE 2019 USGS US Topo 7.5-minute map for Eden, MD 2019 USGS US Topo 7.5-minute map for Rhodesdale, MD 2019 USGS US Topo 7.5-minute map for Wetipquin, MD 2019 USGS US Topo 7.5-minute map for Monie, MD 2019 Elevation of marsh units in Blackwater salt marsh complex, Chesapeake Bay, Maryland USGS Topo Map Vector Data (Vector) 11880 Delmar, Maryland 20201007 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 27655 Mardela Springs, Maryland 20201007 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 27655 Mardela Springs, Maryland 20201007 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 31300 Nanticoke, Maryland 20201007 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 32144 Ninepin Branch, Maryland 20201007 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 40815 Sharptown, Maryland 20201007 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 72035 Whaleyville, Maryland 20201007 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 48486 Wetipquin, Maryland 20201007 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 72035 Whaleyville, Maryland 20201007 for 7.5 x 7.5 minute Shapefile USGS US Topo 7.5-minute map for Delmar, MD,DE 2019 USGS US Topo 7.5-minute map for Eden, MD 2019 USGS US Topo 7.5-minute map for Rhodesdale, MD 2019 USGS US Topo 7.5-minute map for Wetipquin, MD 2019 USGS US Topo 7.5-minute map for Monie, MD 2019 Elevation of marsh units in Blackwater salt marsh complex, Chesapeake Bay, Maryland USGS NED 1/3 arc-second Contours for Salisbury W, Maryland 20191212 1 X 1 degree Shapefile USGS NED 1/3 arc-second Contours for Salisbury W, Maryland 20191212 1 X 1 degree FileGDB 10.1 USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 02080111 (published 20220109) USGS National Hydrography Dataset (NHD) Best Resolution for West Virginia 20160414 State or Territory FileGDB 10.1 - HUC Watersheds