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: 2026-01-23
Forecast Period: January 23 to May 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 1755 2026-02-14
90 % 1858 2026-02-18
70 % 2544 2026-03-06
50 % 3383 2026-03-21
30 % 4550 2026-04-04
10 % 8799 2026-04-24
05 % 13567 2026-04-30

Peakflow exceedence plot for HCRO3

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