U.S. Geological Survey
Flathead Lake & Hungry Horse Reservoir
Northwest River Forecast Center runoff graph
National Weather Service Missoula Area Composite Hydrograph Page (crest projections)
Flathead/Clark Fork river basins. Links to tabular and graphical data.
• Hungry Horse Dam
• Kerr Dam
National Weather Service wave height forecast for Flathead Lake
Flathead River – Mainstem & Three Forks
Other Rivers & Creeks Above Flathead Lake
Northwest River Forecast Center
Water Supply: Runoff and Forecasts
Worldwide Streamflow Data
Global River Discharge Database: This database provides streamflow data on more than 3,500 rivers around the world. It is maintained by the Center for Sustainability and the Global Environment (SAGE) at the University of Wisconsin’s Nelson Institute for Environmental Studies. The streamflow data are in cubic meters per second (one cubic meter per second equals 35.3 cubic feet per second).