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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 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...


map background search result map search result map USGS National Hydrography Dataset (NHD) Best Resolution for Alabama 20160411 State or Territory FileGDB 10.1 - Flowlines USGS Topo Map Vector Data (Vector) 550 Alief, Texas 20190724 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 550 Alief, Texas 20190724 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 76417 Bacliff, Texas 20190723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 76417 Bacliff, Texas 20190723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 10803 Crosby, Texas 20190723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 11150 Cypress, Texas 20190725 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 23081 Katy, Texas 20190724 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 29640 Missouri City, Texas 20190724 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 33029 Oklahoma, Texas 20190724 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 35708 Plum Grove, Texas 20190725 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 38585 Rose Hill, Texas 20190724 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 71856 Tomball, Texas 20190723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 47323 Waller, Texas 20190724 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 70942 Mont Belvieu, Texas 20190725 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 47324 Waller NW, Texas 20190725 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 35282 Pine Mountain SW, Georgia 20200914 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 35282 Pine Mountain SW, Georgia 20200914 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 46393 Upatoi, Georgia 20200914 for 7.5 x 7.5 minute FileGDB 10.1 USGS NED 1/3 arc-second Contours for Houston W, Texas 20190418 1 X 1 degree Shapefile USGS Topo Map Vector Data (Vector) 550 Alief, Texas 20190724 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 550 Alief, Texas 20190724 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 76417 Bacliff, Texas 20190723 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 76417 Bacliff, Texas 20190723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 10803 Crosby, Texas 20190723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 11150 Cypress, Texas 20190725 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 23081 Katy, Texas 20190724 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 29640 Missouri City, Texas 20190724 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 33029 Oklahoma, Texas 20190724 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 35708 Plum Grove, Texas 20190725 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 38585 Rose Hill, Texas 20190724 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 71856 Tomball, Texas 20190723 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 47323 Waller, Texas 20190724 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 70942 Mont Belvieu, Texas 20190725 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 47324 Waller NW, Texas 20190725 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 35282 Pine Mountain SW, Georgia 20200914 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 35282 Pine Mountain SW, Georgia 20200914 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 46393 Upatoi, Georgia 20200914 for 7.5 x 7.5 minute FileGDB 10.1 USGS NED 1/3 arc-second Contours for Houston W, Texas 20190418 1 X 1 degree Shapefile USGS National Hydrography Dataset (NHD) Best Resolution for Alabama 20160411 State or Territory FileGDB 10.1 - Flowlines