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NF FLATHEAD--NEAR COLUMBIA FALLS
   State:  Montana    County:  FLATHEAD
   Latitude:  48 29' 44" North    Longitude:  114 7' 36" West
   Elevation:  3145 feet
   Supporting WFO:  Missoula    
   Action Stage:  12.5'   Flood Stage:  13'   Moderate Flood Stage:  17'
   Major Flood Stage:  19'

Forecasts are calculated from a forecast time series that approximates flow at a 6 hour time step interval. Observed instantaneous peaks can be higher than model forecast peaks.

NF FLATHEAD--NEAR COLUMBIA FALLS   (FCFM8)
Forecasts for Water Year 2025
Ensemble Date: 2025-05-15
 Forecast Period: May 15 to September 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 6.67 10267 2025-05-16
90 % 6.67 10267 2025-05-16
70 % 6.67 10267 2025-05-16
50 % 6.67 10267 2025-05-16
30 % 7.07 11488 2025-05-29
10 % 8.26 15404 2025-06-18
05 % 8.65 16819 2025-06-22

Peakflow exceedence plot for FCFM8

 Click to download runoff traces used in forecast.  Click for comma delimited data used in plot.csv icon