Updated 13 May 2017
Links to lake levels and streamflow gauges
Notes, 21 September 2016:
- USACE links change frequently, and the agency seldom forwards old links to their replacement pages. If you encounter a bad link, go to the USACE’s home page and work through the links until you find the page for which you were looking.
- The Flathead River at Columbia Falls is regulated by Hungry Horse Dam on the South Fork. The North and Middle Forks are wild and thus their hydrographs are not distorted by regulation.
U.S. Geological Survey
Northwest River Forecast Center
- Northwest River Forecast Center Home
- Northwest River Forecast Center runoff (excellent graph)
- NWS Missoula Area Composite Hydrograph Page (crest projections)
- 2018 Northern Rockies Flooding (NWS)
Flathead Lake & Hungry Horse Reservoir
- Flathead Lake Level at Polson. USGS.
- Hungry Horse Reservoir USGS
- U.S. Army Corps of Engineers, Seattle District Home Page.
- Reservoir control home page.
- Flathead/Clark Fork river basins. Links to tabular and graphical data.
- Reservoir control home page.
Flathead River System
- Mainstem Flathead River at Columbia Falls.
- NWS streamflow prediction & flood stages
- Middle Fork Flathead near West Glacier
- North Fork Flathead above Columbia Falls.
- South Fork Flathead below Hungry Horse Dam.
- Mainstem Flathead River below Polson.
- Mainstem Flathead River at Perma.
Minor Rivers Above Flathead Lake
- Stillwater River near Whitefish (historical data only)
- Swan River near Bigfork
- Whitefish River near mouth
- Ashley Creek south of Kalispell New
Lower Clark Fork River System
- Clark Fork River below Missoula
- Clark Fork River at St. Regis
- Clark Fork River at Plains
- Thompson River near Thompson Falls.
- Clark Fork River below Cabinet Gorge Dam
Kootenai River Basin
- Fisher River near Libby.
- Kootenai River near Libby Dam.
- Kootenai River near Leonia, ID (MT/ID border) New
- Yaak River near Troy.