PA DEP's GIS Open Data PortalProvides access to all of our publicly published, non-sensitive GIS data, which includes over 300 data layers relative to abandoned mine lands, air quality, water pollution control, coal mining, hazardous waste, operations, oil & gas, streams and lakes, industrial minerals mining, integrated report, municipal waste, radiation, storage tanks, stormwater, Chapter 93, TMDLs, water resources, and more.