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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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Synopsis: This article outlines how wetlands can significantly reduce flooding in the Upper Mississippi watershed. The authors first provide a historical context by estimating the original and lost wetland storage capacities of the Upper Mississippi and Missouri River Basins. Historically, about 10% of the basin would have been classified as wetland in 1780. By 1980, wetland acreage had been reduced to only 4% of the basin, representing about 26 million acres of wetlands eliminated since 1780. The area of wetland restoration required to reduce the risk of future flooding adequately was estimated based on the total amount of excess floodwater beyond bank-full discharge that passed through the City of St. Louis during...
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Synopsis: Prior to European settlement, the Northern Mixed-grass Prairie was a mosaic of wetland, grassland and grass-shrub habitats, with riparian and floodplain forests along major drainages. Even today, the physiographic area can be characterized as being one of the largest still relatively intact grassland landscapes that persist in North America. It is the continent’s most important production area for waterfowl and is the heart of the breeding range for some of North America’s rarest species of grassland birds. A comparison of relative abundance estimates among physiographic areas sampled by the North American Breeding Bird Survey indicates that more than 40% of the world’s population of Baird’s Sparrows,...
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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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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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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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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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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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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.


map background search result map search result map Flood reduction through wetand restoration: the Upper Mississippi River Basin as a case history. Partners in Flight Bird Conservation Plan for Northern Mixed-Grass Prairie USGS US Topo 7.5-minute map for Black Eyes, SD 2017 USGS US Topo 7.5-minute map for Blackpipe, SD 2017 USGS US Topo 7.5-minute map for Batesland, SD 2017 USGS US Topo 7.5-minute map for Black Horse SE, SD 2017 USGS US Topo 7.5-minute map for Ardmore, SD,NE 2017 USGS US Topo 7.5-minute map for Arlington NE, SD 2017 USGS Topo Map Vector Data (Vector) 3417 Beresford, South Dakota 20180209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 5357 Brentford, South Dakota 20180210 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 3516 Bessie Butte, South Dakota 20180209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 69370 Black Horse, South Dakota 20180209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 10120 Corn Creek, South Dakota 20180210 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 8150 Chapelle Lake NW, South Dakota 20180210 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 11552 De Smet, South Dakota 20180209 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 22078 Iron Post Buttes, South Dakota 20180210 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 22594 Jewel Cave NW, South Dakota 20180210 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 23166 Keldron, South Dakota 20180210 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 42838 Stamford, South Dakota 20180210 for 7.5 x 7.5 minute FileGDB 10.1 USGS NED 1/3 arc-second Contours for Sioux City E, Iowa 20181123 1 X 1 degree Shapefile USGS US Topo 7.5-minute map for Black Eyes, SD 2017 USGS US Topo 7.5-minute map for Blackpipe, SD 2017 USGS US Topo 7.5-minute map for Batesland, SD 2017 USGS US Topo 7.5-minute map for Black Horse SE, SD 2017 USGS US Topo 7.5-minute map for Ardmore, SD,NE 2017 USGS US Topo 7.5-minute map for Arlington NE, SD 2017 USGS Topo Map Vector Data (Vector) 3417 Beresford, South Dakota 20180209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 5357 Brentford, South Dakota 20180210 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 3516 Bessie Butte, South Dakota 20180209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 69370 Black Horse, South Dakota 20180209 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 10120 Corn Creek, South Dakota 20180210 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 8150 Chapelle Lake NW, South Dakota 20180210 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 11552 De Smet, South Dakota 20180209 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 22078 Iron Post Buttes, South Dakota 20180210 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 22594 Jewel Cave NW, South Dakota 20180210 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 23166 Keldron, South Dakota 20180210 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 42838 Stamford, South Dakota 20180210 for 7.5 x 7.5 minute FileGDB 10.1 USGS NED 1/3 arc-second Contours for Sioux City E, Iowa 20181123 1 X 1 degree Shapefile Partners in Flight Bird Conservation Plan for Northern Mixed-Grass Prairie Flood reduction through wetand restoration: the Upper Mississippi River Basin as a case history.