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: 2026-03-12
 Forecast Period: March 12 to July 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 34.38 10831 2026-03-13
90 % 34.38 10831 2026-03-13
70 % 34.38 10831 2026-03-13
50 % 34.38 10831 2026-03-13
30 % 34.38 10831 2026-03-13
10 % 35.56 13474 2026-04-01
05 % 36.39 16299 2026-04-12

Peakflow exceedence plot for SATW1

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