Peakflow Forecasts Header

ST. REGIS--NEAR ST. REGIS
   State:  Montana    County:  MINERAL
   Latitude:  47 17' 48" North    Longitude:  115 7' 18" West
   Elevation:  2645 feet
   Supporting WFO:  Missoula    
   Action Stage:  7.5'   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.

ST. REGIS--NEAR ST. REGIS   (STRM8)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-08
Forecast Period: July 8 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 2.23 166 2025-07-20
90 % 2.25 172 2025-07-26
70 % 2.38 216 2025-08-28
50 % 2.49 258 2025-09-30
30 % 2.60 302 2025-10-22
10 % 2.89 430 2025-10-30
05 % 3.01 490 2025-11-01

Peakflow exceedence plot for STRM8

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