Peakflow Forecasts Header

PROSPECT CREEK--AT THOMPSON FALLS
   State:  Montana    County:  SANDERS
   Latitude:  47 35' 9" North    Longitude:  115 21' 15" West
   Elevation:  2382 feet
   Supporting WFO:  Missoula    
   Action Stage:  6.5'   Flood Stage:  7.5'   Moderate Flood Stage:  8'
   Major Flood Stage:  
9'

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.

PROSPECT CREEK--AT THOMPSON FALLS   (PRCM8)
Forecasts for Water Year
2026
Ensemble Date: 2026-06-14
Forecast Period: June 14 to October 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 1.55 155 2026-06-14
90 % 1.55 155 2026-06-14
70 % 1.55 155 2026-06-14
50 % 1.55 155 2026-06-14
30 % 1.55 155 2026-06-14
10 % 1.55 155 2026-06-14
05 % 1.55 155 2026-06-14

Peakflow exceedence plot for PRCM8

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