Peakflow Forecasts Header

MILL CREEK--NR WALLA WALLA
   State:  Washington    County:  WALLA WALLA
   Latitude:  46 0' 29" North    Longitude:  118 7' 3" West
   Elevation:  1996 feet
   Supporting WFO:  Pendleton    

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.

MILL CREEK--NR WALLA WALLA   (MLKW1)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-11
Forecast Period: July 11 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 13.32 40 2025-07-25
90 % 13.34 42 2025-08-18
70 % 13.51 62 2025-09-29
50 % 13.80 112 2025-10-23
30 % 14.21 215 2025-10-29
10 % 14.42 300 2025-11-01
05 % 15.78 1075 2025-11-01

Peakflow exceedence plot for MLKW1

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