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
2025
Ensemble Date: 2025-07-05
Forecast Period: July 5 to November 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 280 2025-07-05
90 % 315 2025-07-21
70 % 460 2025-10-11
50 % 676 2025-10-22
30 % 898 2025-10-28
10 % 1481 2025-10-31
05 % 2602 2025-11-01

Peakflow exceedence plot for CGRO3

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