Peakflow Forecasts Header

SF MCKENZIE--COUGAR DAM
   State:  Oregon    County:  LANE
   Latitude:  44 8' 9" North    Longitude:  122 14' 49" West
   Elevation:  1262 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.

SF MCKENZIE--COUGAR DAM   (CGRO3)
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 % 1232 2026-02-10
90 % 1336 2026-02-18
70 % 1798 2026-03-07
50 % 2424 2026-03-24
30 % 3026 2026-04-13
10 % 6228 2026-04-24
05 % 9610 2026-04-27

Peakflow exceedence plot for CGRO3

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