Montana Department of Environmental Quality
Geographic Information System

DEQ's Geographic Information System (GIS) is a geographically based system of people, technology, and data providing spatial awareness and decision making to support DEQ's mission to protect, sustain, and improve a clean and healthful environment. DEQ's GIS supports internal and external business processes for data collection, management, analysis, and public interaction through web based services and mobile apps.

Have questions? Contact the DEQ Service Desk.