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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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Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features.
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Background and Problem Prattsville has experienced severe flooding along the Schoharie Creek, most notably during August 2011 following Hurricane Irene, which severely damaged or destroyed large areas of the town, and caused several million dollars in damages (Figure 1). Before and during a flood, forewarning and emergency response are critical. The rescue efforts of emergency responders are often hampered by lack of an understanding of where flooding is occurring at any given moment, but also where flooding is likely to occur in the near future. Emergency responders would benefit from a library of flood-inundation maps that are referenced to the stages recorded at the U.S. Geological Survey (USGS) streamgage in...
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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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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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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 Flood-Inundation Maps for the Schoharie Creek at Prattsville, New York USGS National Hydrography Dataset (NHD) Best Resolution for Alabama 20160411 State or Territory FileGDB 10.1 - Flowlines USGS Combined Vector for Ashland, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Bearsville, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 7877 Cedarville, Ohio 20170310 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 14792 Fairborn, Ohio 20170226 for 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Hensonville, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 47851 Waynesville, Ohio 20170226 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 49989 Xenia, Ohio 20170228 for 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Carmichaels, Pennsylvania 20160801 7.5 x 7.5 minute Shapefile USGS Combined Vector for Ellsworth, Pennsylvania 20160801 7.5 x 7.5 minute Shapefile USGS Combined Vector for Jasonville, Indiana 20160712 7.5 x 7.5 minute Shapefile USGS Combined Vector for Koleen, Indiana 20160712 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 30235 Morgantown North, West Virginia 20170225 for 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Sandborn, Indiana 20160712 7.5 x 7.5 minute Shapefile USGS Combined Vector for Parrottsville, Tennessee 20160602 7.5 x 7.5 minute Shapefile USGS Combined Vector for Wind Ridge, Pennsylvania 20160731 7.5 x 7.5 minute Shapefile USGS US Topo 7.5-minute map for Ebenezer, MO 2017 USGS NED 1/3 arc-second Contours for Johnson City E, Tennessee 20180910 1 X 1 degree Shapefile USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0202 (published 20180813) Flood-Inundation Maps for the Schoharie Creek at Prattsville, New York USGS Combined Vector for Ashland, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Bearsville, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 7877 Cedarville, Ohio 20170310 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 14792 Fairborn, Ohio 20170226 for 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Hensonville, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 47851 Waynesville, Ohio 20170226 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 49989 Xenia, Ohio 20170228 for 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Carmichaels, Pennsylvania 20160801 7.5 x 7.5 minute Shapefile USGS Combined Vector for Ellsworth, Pennsylvania 20160801 7.5 x 7.5 minute Shapefile USGS Combined Vector for Jasonville, Indiana 20160712 7.5 x 7.5 minute Shapefile USGS Combined Vector for Koleen, Indiana 20160712 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 30235 Morgantown North, West Virginia 20170225 for 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Sandborn, Indiana 20160712 7.5 x 7.5 minute Shapefile USGS Combined Vector for Parrottsville, Tennessee 20160602 7.5 x 7.5 minute Shapefile USGS Combined Vector for Wind Ridge, Pennsylvania 20160731 7.5 x 7.5 minute Shapefile USGS US Topo 7.5-minute map for Ebenezer, MO 2017 USGS NED 1/3 arc-second Contours for Johnson City E, Tennessee 20180910 1 X 1 degree Shapefile USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0202 (published 20180813) USGS National Hydrography Dataset (NHD) Best Resolution for Alabama 20160411 State or Territory FileGDB 10.1 - Flowlines