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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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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: AccomackCounty, AlbemarleCounty, AlleghanyCounty, AmeliaCounty, AmherstCounty, All tags...


map background search result map search result map USGS Topo Map Vector Data (Vector) 69538 Candia, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 19146 Hampton, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 23651 Kingston, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 76045 Isles of Shoals OE W, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 27423 Manchester North, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 27426 Manchester South, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 32569 Northwood, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 35480 Pittsfield, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 39814 Sandown, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 36128 Portsmouth, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 2487 Barrington, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 12015 Derry, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 25140 Lawrence, Massachusetts 20180724 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 31933 Newburyport West, Massachusetts 20180724 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 31979 Newmarket, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 34248 Parker Mountain, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 39437 Salem Depot, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS NED 1/3 arc-second Contours for Portland E, Maine 20180618 1 X 1 degree Shapefile USGS NED 1/3 arc-second Contours for Portland E, Maine 20180618 1 X 1 degree FileGDB 10.1 USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0208 (published 20180419) USGS Topo Map Vector Data (Vector) 69538 Candia, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 19146 Hampton, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 23651 Kingston, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 76045 Isles of Shoals OE W, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 27423 Manchester North, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 27426 Manchester South, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 32569 Northwood, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 35480 Pittsfield, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 39814 Sandown, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 36128 Portsmouth, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 2487 Barrington, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 12015 Derry, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 25140 Lawrence, Massachusetts 20180724 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 31933 Newburyport West, Massachusetts 20180724 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 31979 Newmarket, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 34248 Parker Mountain, New Hampshire 20180723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 39437 Salem Depot, New Hampshire 20180723 for 7.5 x 7.5 minute Shapefile USGS NED 1/3 arc-second Contours for Portland E, Maine 20180618 1 X 1 degree Shapefile USGS NED 1/3 arc-second Contours for Portland E, Maine 20180618 1 X 1 degree FileGDB 10.1 USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit - 0208 (published 20180419)