This raster is a highly detailed map of geologic materials at the surface (delineations made from maps at 1:24,000 to 1:12,000 scale). The smaller extent maps were merged together by USDA-NRCS to produce the gSSURGO spatial database, covering the entire state of Wisconsin at a 10m resolution. The gSSURGO map was then interpreted by Iowa …Continue reading “Surficial Geology of Wisconsin”
This raster is a highly detailed map of geologic materials at the surface (delineations made from maps at 1:24,000 to 1:12,000 scale). The smaller extent maps were merged together by USDA-NRCS to produce the gSSURGO spatial database, covering the entire state of Michigan at a 10m resolution. The gSSURGO map was then interpreted by Iowa …Continue reading “Surficial Geology of Michigan”
This raster is a highly detailed map of geologic materials at the surface (delineations made from maps at 1:24,000 to 1:12,000 scale). The smaller extent maps were merged together by USDA-NRCS to produce the gSSURGO spatial database, covering the entire state of South Dakota at a 10m resolution. The gSSURGO map was then interpreted by …Continue reading “Surficial Geology of South Dakota”
This raster is a highly detailed map of geologic materials at the surface (delineations made from maps at 1:24,000 to 1:12,000 scale). The smaller extent maps were merged together by USDA-NRCS to produce the gSSURGO spatial database, covering the entire state of North Dakota at a 10m resolution. The gSSURGO map was then interpreted by …Continue reading “Surficial Geology of North Dakota”
This raster is a highly detailed map of geologic materials at the surface (delineations made from maps at 1:24,000 to 1:12,000 scale). The smaller extent maps were merged together by USDA-NRCS to produce the gSSURGO spatial database, covering the entire state of Minnesota at a 10m resolution. The gSSURGO map was then interpreted by Iowa …Continue reading “Surficial Geology of Minnesota”
This raster is a highly detailed map of geologic materials at the surface (delineations made from maps at 1:24,000 to 1:12,000 scale). The smaller extent maps were merged together by USDA-NRCS to produce the gSSURGO spatial database, covering the entire state of Ohio at a 10m resolution. The gSSURGO map was then interpreted by Iowa …Continue reading “Surficial Geology of Ohio”
This raster is a highly detailed map of geologic materials at the surface (delineations made from maps at 1:24,000 to 1:12,000 scale). The smaller extent maps were merged together by USDA-NRCS to produce the gSSURGO spatial database, covering the entire state of Indiana at a 10m resolution. The gSSURGO map was then interpreted by Iowa …Continue reading “Surficial Geology of Indiana”
This raster is a highly detailed map of geologic materials at the surface (delineations made from maps at 1:24,000 to 1:12,000 scale). The smaller extent maps were merged together by USDA-NRCS to produce the gSSURGO spatial database, covering the entire state of Illinois at a 10m resolution. The gSSURGO map was then interpreted by Iowa …Continue reading “Surficial Geology of Illinois”
A new approach for delineating noncontributing areas of watersheds is presented. Maps of soil properties offer indicators of subtle landscape features and hydrologic functions. Our approach is to identify soil map units that reflect upland ponding and then define the sum of their watersheds as the noncontributing area. The decrease in time required to delineate noncontributing areas with a GIS method makes it practical to perform regional scale analysis of non-contributing areas.