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: 2026-03-12
Forecast Period: March 12 to July 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 818 2026-03-26
90 % 886 2026-04-08
70 % 1092 2026-04-29
50 % 1176 2026-05-13
30 % 1390 2026-05-21
10 % 1604 2026-06-08
05 % 1691 2026-06-19

Peakflow exceedence plot for BUDW1

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