Saint Mary River at International boundary, AL
River level and flood forecast · Glacier County
Normal3.8 ftas of Mon 2:10 PM
The river is 3.7 ft below flood stage (7.5 ft).
Flow: 230 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 5 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 9.5 ft |
| Moderate flood stage | 8.5 ft |
| Flood stage | 7.5 ft |
| Action stage | 6.5 ft |
| Record crest (June 21, 1975) | 13.46 ft |
Highest crests on record
- 13.46 ft — June 21, 1975
- 12.02 ft — May 28, 2019
- 10.99 ft — June 7, 1995
- 9.96 ft — March 13, 2003
- 9 ft — June 19, 2014
Recent crests: 7.54 ft (June 14, 2022) · 12.02 ft (May 28, 2019) · 9 ft (June 19, 2014) · 6.82 ft (May 15, 2013) · 7.12 ft (June 27, 2012)
Up and down the river, and nearby
- UpstreamSaint Mary River near Babb, MT
- Saint Mary Canal near Babb at St Mary Crossing, MT
- North Fork Milk River above St Mary Canal near Browning, MT
- North Fork Milk River near International boundary near Browning, AL
- Swiftcurrent Creek at Many Glacier near Babb, MT
- Two Medicine River near bl S Fork nr Browning, MT
- Middle Fork Flathead River near West Glacier, MT
- Badger Creek below Four Horns Canal near Browning, MT
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (SMBM8); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.