Peakflow Forecasts Header

CLARK FORK--NEAR PLAINS
   State:  Montana    County:  SANDERS
   Latitude:  47 25' 46" North    Longitude:  114 51' 18" West
   Elevation:  2449 feet
   Supporting WFO:  Missoula    
   Action Stage:  15'   Flood Stage:  16'   Moderate Flood Stage:  18'
   Major Flood Stage:  19.5'

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--NEAR PLAINS   (PLNM8)
Forecasts for Water Year 2026
Ensemble Date: 2026-07-15
 Forecast Period: July 15 to November 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 6.37 18734 2026-07-15
90 % 6.37 18734 2026-07-15
70 % 6.37 18734 2026-07-15
50 % 6.37 18734 2026-07-15
30 % 6.37 18734 2026-07-15
10 % 6.37 18734 2026-07-15
05 % 7.29 24028 2026-09-27

Peakflow exceedence plot for PLNM8

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