Peakflow Forecasts Header

YAKIMA--NEAR PARKER
   State:  Washington    County:  YAKIMA
   Latitude:  46 29' 48" North    Longitude:  120 26' 29" West
   Elevation:  889 feet
   Supporting WFO:  Pendleton    
   Action Stage:  9.4'   Flood Stage:  10'   Moderate Flood Stage:  12'
   Major Flood Stage:  14'

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.

YAKIMA--NEAR PARKER   (PARW1)
Forecasts for Water Year 2025
Ensemble Date: 2025-06-30
 Forecast Period: June 30 to October 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 1.95 518 2025-07-04
90 % 1.95 518 2025-07-04
70 % 1.95 518 2025-07-04
50 % 1.95 518 2025-07-04
30 % 1.96 520 2025-07-08
10 % 2.08 614 2025-07-14
05 % 2.25 768 2025-07-15

Peakflow exceedence plot for PARW1

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