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MnModel Prehistoric Hydrographic Model, Minnesota
The Prehistorical Hydrographic Model (PREHYD) raster feature dataset was developed as a model of prehistoric surface hydrographic features in Minnesota. -
MnModel Historical Hydrographic Model, Minnesota
The Historical Hydrographic Model (HISTHYD) raster feature dataset was developed as a model of surface hydrographic features at the time of the Public Land Survey in Minnesota.
