I really don't like any of Esri's basemaps so I took the time to generate my own hillshade and contour layers from DEM data as well as some point data for nearby cities labels. The habitat polygons were generated by isolating the following habitat requirements for this snail:
- Land cover of: grassland, open water, or riparian (from raster data of landcover classifications)
- 100 meters of a stream (from USGS stream lines)
- Elevation of 1200 – 1600 meters (highly suitable) and 1600m – 2000 meters (moderately suitable) (from USGS DEM data)
