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The High Resolution National Hydrography Dataset Plus (NHDPlus HR) is an integrated set of geospatial data layers, including the best available National Hydrography Dataset (NHD), the 10-meter 3D Elevation Program Digital Elevation Model (3DEP DEM), and the National Watershed Boundary Dataset (WBD). The NHDPlus HR combines the NHD, 3DEP DEMs, and WBD to create a stream network with linear referencing, feature naming, "value added attributes" (VAAs), elevation-derived catchments, and other features for hydrologic data analysis. The stream network with linear referencing is a system of data relationships applied to hydrographic systems so that one stream reach "flows" into another and "events" can be tied to and traced...
Tags: Albany County, Bennington County, Berkshire County, Columbia County, Delaware County, All tags...
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From 2013 to 2015, bathymetric surveys of New York City’s six West of Hudson reservoirs (Ashokan, Cannonsville, Neversink, Pepacton, Rondout, and Schoharie) were performed to provide updated capacity tables and bathymetric maps. Depths were surveyed with a single-beam echo sounder and real-time kinematic global positioning system (RTK-GPS) along planned transects at predetermined intervals for each reservoir. A separate set of echo sounder data was collected along transects at oblique angles to the main transects for accuracy assessment. Field survey data was combined with water-surface elevations in a geographic information system to create three-dimensional surfaces representing reservoir-bed elevations in the...
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Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features.
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From 2013 to 2015, bathymetric surveys of New York City’s six West of Hudson reservoirs (Ashokan, Cannonsville, Neversink, Pepacton, Rondout, and Schoharie) were performed to provide updated capacity tables and bathymetric maps. Depths were surveyed with a single-beam echo sounder and real-time kinematic global positioning system (RTK-GPS) along planned transects at predetermined intervals for each reservoir. A separate set of echo sounder data was collected along transects at oblique angles to the main transects for accuracy assessment. Field survey data was combined with water-surface elevations in a geographic information system to create three-dimensional surfaces representing reservoir-bed elevations in the...
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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: Adams County, Administrative watershed units, Administrative watershed units, Allegany County, Allegany County, 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: Addison County, Administrative watershed units, Administrative watershed units, Albany County, Allegany County, 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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Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features.
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Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features.
thumbnail
Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features.
thumbnail
Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features.


map background search result map search result map Echosounder Quality Assurance Points, Rondout Reservoir, 2013 to 2014 Elevation TIN, West Basin Ashokan Reservoir, 2013 to 2015 USGS Combined Vector for Clintondale, New York 20160804 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Clintondale, New York 20160804 7.5 x 7.5 minute Shapefile USGS Combined Vector for Arena, New York 20160804 7.5 x 7.5 minute Shapefile USGS Combined Vector for Bearsville, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Grahamsville, New York 20160804 7.5 x 7.5 minute Shapefile USGS Combined Vector for Kingston West, New York 20160804 7.5 x 7.5 minute Shapefile USGS Combined Vector for Lewbeach, New York 20160805 7.5 x 7.5 minute Shapefile USGS Combined Vector for Newburgh, New York 20160804 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Peekamoose Mountain, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Peekamoose Mountain, New York 20160805 7.5 x 7.5 minute Shapefile USGS Combined Vector for Shandaken, New York 20160804 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Wappingers Falls, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for West Kill, New York 20160805 7.5 x 7.5 minute Shapefile USGS Combined Vector for Woodstock, New York 20160805 7.5 x 7.5 minute Shapefile USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 02020008 (published 20190107) USGS National Hydrography Dataset (NHD) Best Resolution 20181221 for New York State or Territory Shapefile Model Version 2.2.1 USGS National Hydrography Dataset (NHD) Best Resolution 20181219 for Pennsylvania State or Territory FileGDB 10.1 Model Version 2.2.1 USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0202 (published 20180813) Echosounder Quality Assurance Points, Rondout Reservoir, 2013 to 2014 Elevation TIN, West Basin Ashokan Reservoir, 2013 to 2015 USGS Combined Vector for Clintondale, New York 20160804 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Clintondale, New York 20160804 7.5 x 7.5 minute Shapefile USGS Combined Vector for Arena, New York 20160804 7.5 x 7.5 minute Shapefile USGS Combined Vector for Bearsville, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Grahamsville, New York 20160804 7.5 x 7.5 minute Shapefile USGS Combined Vector for Kingston West, New York 20160804 7.5 x 7.5 minute Shapefile USGS Combined Vector for Lewbeach, New York 20160805 7.5 x 7.5 minute Shapefile USGS Combined Vector for Newburgh, New York 20160804 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Peekamoose Mountain, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Peekamoose Mountain, New York 20160805 7.5 x 7.5 minute Shapefile USGS Combined Vector for Shandaken, New York 20160804 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Wappingers Falls, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for West Kill, New York 20160805 7.5 x 7.5 minute Shapefile USGS Combined Vector for Woodstock, New York 20160805 7.5 x 7.5 minute Shapefile USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 02020008 (published 20190107) USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0202 (published 20180813) USGS National Hydrography Dataset (NHD) Best Resolution 20181219 for Pennsylvania State or Territory FileGDB 10.1 Model Version 2.2.1 USGS National Hydrography Dataset (NHD) Best Resolution 20181221 for New York State or Territory Shapefile Model Version 2.2.1