Peakflow Forecasts Header

HANGMAN CREEK--AT SPOKANE
   State:  Washington    County:  SPOKANE
   Latitude:  47 38' 57" North    Longitude:  117 27' 18" West
   Elevation:  1717 feet
   Supporting WFO:  Spokane    
   Action Stage:  10'   Flood Stage:  11'   Moderate Flood Stage:  13'
   Major Flood Stage:  
15'

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.

HANGMAN CREEK--AT SPOKANE   (HAGW1)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-14
Forecast Period: July 14 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 1.02 11 2025-07-14
90 % 1.02 11 2025-07-14
70 % 1.04 12 2025-10-26
50 % 1.04 12 2025-10-30
30 % 1.06 13 2025-10-31
10 % 1.09 14 2025-11-01
05 % 1.09 14 2025-11-01

Peakflow exceedence plot for HAGW1

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