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: 2025-05-15
Forecast Period: May 15 to September 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 4.54 1576 2025-05-19
90 % 4.54 1576 2025-05-19
70 % 4.54 1576 2025-05-19
50 % 4.54 1576 2025-05-19
30 % 4.54 1576 2025-05-19
10 % 4.85 1864 2025-06-04
05 % 5.26 2258 2025-06-11

Peakflow exceedence plot for STRM8

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