Peakflow Forecasts Header

MF WILLAMETTE--HILLS CREEK DAM
   State:  Oregon    County:  LANE
   Latitude:  43 43' 19" North    Longitude:  122 26' 15" West
   Elevation:  1544 feet
   Supporting WFO:  Portland    
   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.

MF WILLAMETTE--HILLS CREEK DAM   (HCRO3)
Forecasts for Water Year
2026
Ensemble Date: 2026-06-14
Forecast Period: June 14 to October 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 436 2026-06-14
90 % 436 2026-06-14
70 % 436 2026-06-14
50 % 507 2026-07-06
30 % 585 2026-09-09
10 % 756 2026-09-26
05 % 1456 2026-09-29

Peakflow exceedence plot for HCRO3

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