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
2027
Ensemble Date: 2026-10-09
Forecast Period: October 9 to February 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 3.15 640 2026-11-01
90 % 3.35 822 2026-11-03
70 % 4.64 2550 2026-11-12
50 % 5.21 3636 2026-11-22
30 % 5.99 5440 2026-12-11
10 % 7.69 11141 2027-01-10
05 % 8.30 13732 2027-01-17

Peakflow exceedence plot for SELI1

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