Wyoming-Montana Water Science Center
USGS IN YOUR STATE
USGS Water Science Centers are located in each state.
Surface-Water Information and Data
The U.S. Geological Survey operates and maintains approximately 7,300 streamgages nationwide, and more than 200 in Montana, which provide long-term, accurate, and unbiased information that meets the needs of many diverse users. The USGS collects the streamflow data needed by Federal, State, Tribal and local agencies for planning and operating water-resources projects and regulatory programs.
The links below allow you to find information and data about Montana's surface-water resources. The map to the left shows current streamflow conditions in Montana; click the map to go to a full size version from USGS WaterWatch.
USGS National resources
Surface-Water Use, 2000 (if applicable)