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
2022
Ensemble Date: 2021-12-08
Forecast Period: December 8 to April 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 4.18 1115 2022-01-02
90 % 4.72 1521 2022-01-11
70 % 5.89 2585 2022-02-02
50 % 6.62 3359 2022-02-19
30 % 7.61 4549 2022-03-09
10 % 8.79 6138 2022-03-23
05 % 9.61 7358 2022-03-28

Peakflow exceedence plot for HAGW1

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