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
2027
Ensemble Date: 2026-10-15
Forecast Period: October 15 to February 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 145 2026-11-04
90 % 327 2026-11-08
70 % 720 2026-11-23
50 % 1126 2026-12-08
30 % 1502 2027-01-04
10 % 2428 2027-01-25
05 % 3634 2027-01-31

Peakflow exceedence plot for BUDW1

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