Peakflow Forecasts Header

SWAN--NEAR BIGFORK
   State:  Montana    County:  LAKE
   Latitude:  48 1' 27" North    Longitude:  113 58' 44" West
   Elevation:  3063 feet
   Supporting WFO:  Missoula    
   Action Stage:  6'   Flood Stage:  6.5'   Moderate Flood Stage:  7.5'
   Major Flood Stage:  
8'

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.

SWAN--NEAR BIGFORK   (SWRM8)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-05
Forecast Period: July 5 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 3.39 1545 2025-07-05
90 % 3.39 1545 2025-07-05
70 % 3.39 1545 2025-07-05
50 % 3.39 1545 2025-07-05
30 % 3.39 1545 2025-07-05
10 % 3.55 1744 2025-08-18
05 % 3.78 2052 2025-10-18

Peakflow exceedence plot for SWRM8

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