Peakflow Forecasts Header

ELWHA--AT MCDONALD BRIDGE NEAR PORT ANGELES
   State:  Washington    County:  CLALLAM
   Latitude:  48 3' 18" North    Longitude:  123 34' 55" West
   Elevation:  200 feet
   Supporting WFO:  Seattle    
   Action Stage:  17.3'   Flood Stage:  20'   Moderate Flood Stage:  21.5'
   Major Flood Stage:  23'

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.

ELWHA--AT MCDONALD BRIDGE NEAR PORT ANGELES   (ELWW1)
Forecasts for Water Year 2025
Ensemble Date: 2025-05-12
 Forecast Period: May 12 to September 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 11.35 2158 2025-05-30
90 % 11.37 2194 2025-06-01
70 % 11.58 2458 2025-06-07
50 % 11.77 2712 2025-06-19
30 % 11.98 3009 2025-07-07
10 % 12.33 3534 2025-08-25
05 % 12.54 3865 2025-08-30

Peakflow exceedence plot for ELWW1

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