Peakflow Forecasts Header

BUMPING--BUMPING LAKE DAM
   State:  Washington    County:  YAKIMA
   Latitude:  46 52' 0" North    Longitude:  121 18' 0" West
   Elevation:  3441 feet
   Supporting WFO:  Pendleton    
   Inflow Data  

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.

BUMPING--BUMPING LAKE DAM   (BUDW1)
Forecasts for Water Year
2026
Ensemble Date: 2026-07-10
Forecast Period: July 10 to November 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 69 2026-07-10
90 % 69 2026-07-10
70 % 129 2026-09-19
50 % 205 2026-10-21
30 % 430 2026-10-29
10 % 862 2026-10-31
05 % 1416 2026-11-01

Peakflow exceedence plot for BUDW1

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