Peakflow Forecasts Header

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
2024
Ensemble Date: 2024-04-25
Forecast Period: April 25 to August 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 27.29 5755 2024-04-27
90 % 27.29 5755 2024-04-27
70 % 27.29 5755 2024-04-27
50 % 27.29 5755 2024-04-27
30 % 28.05 7224 2024-05-18
10 % 29.70 10919 2024-06-08
05 % 30.90 13849 2024-06-09

Peakflow exceedence plot for COCO3

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