Peakflow Forecasts Header

CLARK FORK--ABOVE MISSOULA
   State:  Montana    County:  MISSOULA
   Latitude:  46 52' 37" North    Longitude:  113 55' 53" West
   Elevation:  3198 feet
   Supporting WFO:  Missoula    
   Action Stage:  7'   Flood Stage:  7.5'   Moderate Flood Stage:  11'
   Major Flood Stage:  
13'

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.

CLARK FORK--ABOVE MISSOULA   (ABOM8)
Forecasts for Water Year
2026
Ensemble Date: 2026-02-06
Forecast Period: February 6 to June 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 4.81 5351 2026-05-03
90 % 5.30 6531 2026-05-07
70 % 6.02 8220 2026-05-23
50 % 6.45 9281 2026-05-27
30 % 7.03 10787 2026-05-30
10 % 7.92 13196 2026-06-01
05 % 9.06 16474 2026-06-01

Peakflow exceedence plot for ABOM8

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