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GIS Modeling of Archaeological Sites in the Raccoon River Greenbelt - The Greenbelt GIS database was used for modeling 85 known prehistoric archaeological sites in a 208 square mile portion of the Greenbelt. The raster database included data on land cover, soils, elevation, and significant sites (plant, animal, historic, archaeologic, geologic, and hydrologic). Project abstract, screen captures, and bibliography. Help build the largest human-edited directory on the web.