Peakflow Forecasts Header

CLARK FORK--NR DRUMMOND
   State:  Montana    County:  GRANITE
   Latitude:  46 42' 44" North    Longitude:  113 19' 48" West
   Elevation:  3379 feet
   Supporting WFO:  Missoula    
   Action Stage:  7'   Flood Stage:  8'   Moderate Flood Stage:  10'
   Major Flood Stage:  
11.5'

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--NR DRUMMOND   (DRMM8)
Forecasts for Water Year
2025
Ensemble Date: 2025-05-12
Forecast Period: May 12 to September 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 4.01 1133 2025-05-20
90 % 4.01 1133 2025-05-20
70 % 4.24 1303 2025-05-29
50 % 4.37 1407 2025-06-03
30 % 4.92 1887 2025-06-12
10 % 5.88 2718 2025-06-25
05 % 6.30 3114 2025-07-04

Peakflow exceedence plot for DRMM8

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