GIS Data

  • Physiographic Regions of Iowa (Shapefile)

    The state of Iowa contains diverse landscapes, each with subtle but impactful differences in their physical characteristics. This data set builds on the previously… Read More

  • 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… Read More

  • 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… Read More

  • 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… Read More

  • 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… Read More

  • 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… Read More

  • 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… Read More

  • 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… Read More

  • Surficial Geology of Illinois

    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… Read More

  • Iowa Soil Drainage Class Maps [gSSURGO]

    “Drainage class (natural)” refers to the frequency and duration of wet periods under conditions similar to those under which the soil formed. Alterations of the… Read More