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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: AddisonCounty, BenningtonCounty, BerkshireCounty, CaledoniaCounty, CarrollCounty, 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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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.


map background search result map search result map USGS Topo Map Vector Data (Vector) 1098 Ansonia, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 1098 Ansonia, Connecticut 20180803 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 13135 Durham, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 18867 Haddam, Connecticut 20180803 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 26438 Long Hill, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 28835 Meriden, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 29123 Middletown, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 29258 Milford, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 26438 Long Hill, Connecticut 20180803 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 30514 Mount Carmel, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 32030 Newtown, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 28835 Meriden, Connecticut 20180803 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 38819 Roxbury, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 42341 Southington, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 38819 Roxbury, Connecticut 20180803 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 47328 Wallingford, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS NED 1/3 arc-second Contours for Hartford E, Connecticut 20180717 1 X 1 degree Shapefile USGS NED 1/3 arc-second Contours for Hartford W, Connecticut 20180717 1 X 1 degree FileGDB 10.1 USGS Topo Map Vector Data (Vector) 30514 Mount Carmel, Connecticut 20180803 for 7.5 x 7.5 minute Shapefile USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0108 (published 20180420) USGS Topo Map Vector Data (Vector) 1098 Ansonia, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 1098 Ansonia, Connecticut 20180803 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 13135 Durham, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 18867 Haddam, Connecticut 20180803 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 26438 Long Hill, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 28835 Meriden, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 29123 Middletown, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 29258 Milford, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 26438 Long Hill, Connecticut 20180803 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 30514 Mount Carmel, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 32030 Newtown, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 28835 Meriden, Connecticut 20180803 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 38819 Roxbury, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 42341 Southington, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 38819 Roxbury, Connecticut 20180803 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 47328 Wallingford, Connecticut 20180803 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 30514 Mount Carmel, Connecticut 20180803 for 7.5 x 7.5 minute Shapefile USGS NED 1/3 arc-second Contours for Hartford E, Connecticut 20180717 1 X 1 degree Shapefile USGS NED 1/3 arc-second Contours for Hartford W, Connecticut 20180717 1 X 1 degree FileGDB 10.1 USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0108 (published 20180420)