Measures volume underneath a vector polygon, above a DEM. This method differs from Arc's Polygon Volume tool because it assumes no polygon elevation and instead overlays the polygon over the DEM. The script accepts one or many polygons in a shp. The calculated volume value is assigned as an attribute in the shp's table.
rcallihan/VolumeUnderPolygon
Measures volume underneath polygon, above DEM. Assumes no polygon elevation.
Python