Peakflow Forecasts Header

BITTERROOT--NEAR MISSOULA
   State:  Montana    County:  MISSOULA
   Latitude:  46 49' 55" North    Longitude:  114 3' 11" West
   Elevation:  3110 feet
   Supporting WFO:  Missoula    
   Action Stage:  10'   Flood Stage:  11'   Moderate Flood Stage:  13'
   Major Flood Stage:  
15'

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.

BITTERROOT--NEAR MISSOULA   (BITM8)
Forecasts for Water Year
2026
Ensemble Date: 2025-12-09
Forecast Period: December 9 to April 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 6.82 6112 2025-12-13
90 % 6.82 6112 2025-12-13
70 % 6.82 6112 2025-12-13
50 % 6.82 6112 2025-12-13
30 % 6.82 6112 2025-12-13
10 % 6.82 6112 2025-12-13
05 % 7.08 6646 2026-02-09

Peakflow exceedence plot for BITM8

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