SWAN − NEAR BIGFORK (SWRM8)
   State:  Montana
   County:  Lake
   Latitude:  48 1' 27" North
   Longitude:  113 58' 44" West
   Elevation:  3063 ft

   Supporting NWS Forecast Office: WFO Missoula

   
Click for NWS Official River Forecasts for SWRM8
   


   Action Stage:  
6 ft
   Flood Stage:  
6.5 ft
   Moderate Flood Stage:  
7.5 ft
   Major Flood Stage:  
8 ft
Daily Historical Statistics for May 30, 2026
Mean Stage: 4.73 ft  Mean Flow: 3490 cfs
Max Stage: 6.66 ft  Max Flow: 7390 cfs (1948)
Min Stage:  3.60 ft   Min Flow: 1680 cfs (1987)

Statistics based on water years: 1922-2024
* statistics estimated based on current rating

Record Stage: 
7.34 ft
Record Flow: 
8890 cfs
Date of Record: 
June 20, 1974

The 4-10 Day Trend Forecast is based on model guidance and uncertainty during this period is greater.

Hydrograph plot for SWRM8

Data Used In Plot   "label   USGS Observations