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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.
Tags: 1 x 1 degree,
1 x 1 degree,
AR,
Arkansas,
Ashley County, All tags...
Bradley County,
Calhoun County,
Claiborne County,
Clark County,
Cleveland County,
Columbia County,
Dallas County,
Downloadable Data,
Drew County,
Elevation,
Elevation Terrestrial,
LA,
Louisiana,
Morehouse County,
National Elevation Dataset (NED),
National Elevation Dataset (NED) 1/3 arc-second - Contours,
National Elevation Dataset (NED) 1/3 arc-second - Contours,
Ouachita County,
Shapefile,
Shapefile,
US,
US,
Union County,
Union County,
United States,
United States,
elevation,
ngda, Fewer tags
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.
Tags: 1 x 1 degree,
1 x 1 degree,
AR,
Arkansas,
Ashley County, All tags...
Bradley County,
Calhoun County,
Claiborne County,
Clark County,
Cleveland County,
Columbia County,
Dallas County,
Downloadable Data,
Drew County,
Elevation,
Elevation Terrestrial,
FileGDB 10.1,
FileGDB 10.1,
LA,
Louisiana,
Morehouse County,
National Elevation Dataset (NED),
National Elevation Dataset (NED) 1/3 arc-second - Contours,
National Elevation Dataset (NED) 1/3 arc-second - Contours,
Ouachita County,
US,
US,
Union County,
Union County,
United States,
United States,
elevation,
ngda, Fewer tags
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