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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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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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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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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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Floating transient electromagnetic (FloaTEM) data were acquired on the Upper Delaware River during December 2018. During the survey, approximately 10 line-kilometers were collected in the Upper Delaware River, near USGS boring 12008-14 (https://webapps.usgs.gov/GeoLogLocator/#!/search) near Barryville, New York study area. Data were collected by members of the U.S. Geological Survey, Hydrogeophysics Branch, New England Water Science Center, and the National Park Service UPDE. FloaTEM data acquired along the Delaware River in Sullivan County, in New York, were collected to test a new continuous water-borne transient electromagnetic data collection platform, and to characterize the subsurface resistivity structure....
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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, Adams County, Administrative watershed units, Administrative watershed units, Alamance 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, Area of Complex Channels, All tags...


map background search result map search result map Echosounder Quality Assurance Points, Rondout Reservoir, 2013 to 2014 Elevation TIN, Neversink Reservoir, 2014 USGS Topo Map Vector Data (Vector) 17932 Grahamsville, New York 20191118 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 22495 Jeffersonville, New York 20191118 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 25531 Lewbeach, New York 20191118 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 34616 Peekamoose Mountain, New York 20191119 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 34616 Peekamoose Mountain, New York 20191119 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 43676 Sullivan Gardens, Tennessee 20190912 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 13169 Dutch Mountain, Pennsylvania 20190920 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 18659 Grover, Pennsylvania 20190920 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 22413 Jasonville, Indiana 20190704 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 39788 Sandborn, Indiana 20190704 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 4848 Boone Dam, Tennessee 20190912 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 12435 Doe, Tennessee 20190912 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 32116 Nind, Missouri 20210623 for 7.5 x 7.5 minute FileGDB 10.1 USGS NED 1/3 arc-second Contours for Indianapolis W, Indiana 20190624 1 X 1 degree FileGDB 10.1 USGS NED 1/3 arc-second Contours for Johnson City E, Tennessee 20190624 1 X 1 degree Shapefile NHD 20200615 for Vermont State or Territory Shapefile Model Version 2.2.1 NHD 20200615 for Virginia State or Territory Shapefile Model Version 2.2.1 Floating transient electromagnetic (FloaTEM) surveys in the Delaware River near Barryville, New York Echosounder Quality Assurance Points, Rondout Reservoir, 2013 to 2014 USGS Topo Map Vector Data (Vector) 17932 Grahamsville, New York 20191118 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 22495 Jeffersonville, New York 20191118 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 25531 Lewbeach, New York 20191118 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 34616 Peekamoose Mountain, New York 20191119 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 34616 Peekamoose Mountain, New York 20191119 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 43676 Sullivan Gardens, Tennessee 20190912 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 13169 Dutch Mountain, Pennsylvania 20190920 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 18659 Grover, Pennsylvania 20190920 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 22413 Jasonville, Indiana 20190704 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 39788 Sandborn, Indiana 20190704 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 4848 Boone Dam, Tennessee 20190912 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 12435 Doe, Tennessee 20190912 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 32116 Nind, Missouri 20210623 for 7.5 x 7.5 minute FileGDB 10.1 Floating transient electromagnetic (FloaTEM) surveys in the Delaware River near Barryville, New York USGS NED 1/3 arc-second Contours for Indianapolis W, Indiana 20190624 1 X 1 degree FileGDB 10.1 USGS NED 1/3 arc-second Contours for Johnson City E, Tennessee 20190624 1 X 1 degree Shapefile NHD 20200615 for Vermont State or Territory Shapefile Model Version 2.2.1 NHD 20200615 for Virginia State or Territory Shapefile Model Version 2.2.1