Peakflow Forecasts Header

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: 2025-07-11
Forecast Period: July 11 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 3.27 2189 2025-07-11
90 % 3.27 2189 2025-07-11
70 % 3.27 2189 2025-07-11
50 % 3.27 2189 2025-07-11
30 % 3.27 2189 2025-07-11
10 % 3.58 2676 2025-09-27
05 % 4.86 5252 2025-10-29

Peakflow exceedence plot for FCFM8

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