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
2027
Ensemble Date: 2026-10-13
Forecast Period: October 13 to February 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 2282 2026-11-20
90 % 2621 2026-11-27
70 % 4603 2026-12-14
50 % 6240 2026-12-29
30 % 9646 2027-01-10
10 % 15962 2027-01-23
05 % 18183 2027-01-26

Peakflow exceedence plot for HCRO3

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