The Montana Department of Environmental Quality provides much of the data it collects in an online interactive map. The map includes:
- Registered hazardous waste handlers
- Hazardous substance releases
- Petroleum fund claims due to contamination from petroleum storage tanks
- Regulated underground storage tanks
- Locations of opencut mines (for the mining of bentonite, clay, scoria, soil materials, peat, sand, or gravel)
- Source water assessments for public water supplies
- Water quality monitoring sites and assessments
- Planning areas for Montana's total maximum daily load (TMDL) program
- 30-year average annual precipitation
Additional map layers include the outlines of counties, Indian reservations, sage grouse conservation areas, and state conservation districts.
By clicking on sites of interest, users can access reports providing more information on a number of these topics.
Click here to access the interactive map of environmental quality information in Montana.