Peakflow Forecasts Header

SATSOP--NEAR SATSOP
   State:  Washington    County:  GRAYS HARBOR
   Latitude:  47 0' 2" North    Longitude:  123 29' 40" West
   Elevation:  21 feet
   Supporting WFO:  Seattle    
   Action Stage:  36'   Flood Stage:  38'   Moderate Flood Stage:  40'
   Major Flood Stage:  42'

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.

SATSOP--NEAR SATSOP   (SATW1)
Forecasts for Water Year 2026
Ensemble Date: 2026-06-10
 Forecast Period: June 10 to October 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 28.36 751 2026-06-11
90 % 28.36 751 2026-06-11
70 % 28.36 751 2026-06-11
50 % 28.52 858 2026-07-03
30 % 29.31 1517 2026-09-18
10 % 29.95 2197 2026-09-30
05 % 31.98 5071 2026-10-01

Peakflow exceedence plot for SATW1

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