Peakflow Forecasts Header

ROCK CREEK--NEAR CLINTON
   State:  Montana    County:  MISSOULA
   Latitude:  46 43' 21" North    Longitude:  113 40' 55" West
   Elevation:  3519 feet
   Supporting WFO:  Missoula    
   Action Stage:  8.5'   Flood Stage:  9'   Moderate Flood Stage:  9.5'
   Major Flood Stage:  10'

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.

ROCK CREEK--NEAR CLINTON   (RCCM8)
Forecasts for Water Year 2026
Ensemble Date: 2026-04-14
 Forecast Period: April 14 to August 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 7.12 2155 2026-04-30
90 % 7.19 2288 2026-05-06
70 % 7.30 2501 2026-05-16
50 % 7.40 2705 2026-05-21
30 % 7.51 2942 2026-05-29
10 % 7.78 3559 2026-06-07
05 % 7.90 3834 2026-06-11

Peakflow exceedence plot for RCCM8

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