Peakflow Forecasts Header

SELWAY--NEAR LOWELL
   State:  Idaho    County:  IDAHO
   Latitude:  46 5' 12" North    Longitude:  115 30' 46" West
   Elevation:  1540 feet
   Supporting WFO:  Missoula    
   Action Stage:  13.5'   Flood Stage:  14'   Moderate Flood Stage:  16'
   Major Flood Stage:  18'

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.

SELWAY--NEAR LOWELL   (SELI1)
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 % 7.89 11973 2026-03-26
90 % 8.11 12907 2026-04-21
70 % 8.57 14931 2026-05-06
50 % 8.87 16246 2026-05-17
30 % 9.43 18701 2026-05-23
10 % 9.95 21048 2026-05-31
05 % 10.15 21968 2026-06-01

Peakflow exceedence plot for SELI1

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