Saginaw Bay Restoration Assessment: Dikes

This dataset represenst the location of dikes within the Saginaw Bay Restoration Assessment (SBRA) study area. An ArcGIS model identified dikes as having a difference in elevation and slope above a certain threshold. If the elevation difference was below a certain threshold, the area was not considered a dike. However, if the difference in elevation between two points was significantly high, then the area was marked as a dike. Areas contiguous with each other were considered part of the same dike. Data underwent quality control (QC) procedures in which Subject Matter Experts and those familiar with the study area examined the data output, comparing the proposed dike locations to aerial imagery, flowline data, and the Digital Elevation Model (DEM). Dikes that appeared to be false positives were deleted from the dataset. For more information, see the full data release documentation and the GLCWRA webpage: https://glcwra.wim.usgs.gov/.