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CLACKAMAS--NEAR OREGON CITY
   State:  Oregon    County:  CLACKAMAS
   Latitude:  45 22' 45" North    Longitude:  122 34' 33" West
   Elevation:  15 feet
   Supporting WFO:  Portland    
   Action Stage:  38'   Flood Stage:  39'
   Major Flood Stage:  
46'

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.

CLACKAMAS--NEAR OREGON CITY   (COCO3)
Forecasts for Water Year
2022
Ensemble Date: 2021-12-07
Forecast Period: December 7 to April 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 29.22 9807 2021-12-13
90 % 30.09 11866 2021-12-19
70 % 32.32 17526 2022-01-03
50 % 34.32 23380 2022-01-17
30 % 36.07 29127 2022-02-04
10 % 39.43 41774 2022-02-25
05 % 40.46 46081 2022-03-28

Peakflow exceedence plot for COCO3

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