CLACKAMAS − NEAR OREGON CITY (COCO3)
   State:  Oregon
   County:  Clackamas
   Latitude:  45 22' 45" North
   Longitude:  122 34' 33" West
   Elevation:  15 ft

   Supporting NWS Forecast Office: WFO Portland

   
Click for NWS Official River Forecasts for COCO3
   


   Action Stage:  
38 ft
   Flood Stage:  
39 ft
   Moderate Flood Stage:  
42 ft
   Major Flood Stage:  
46 ft
Daily Historical Statistics for October 14, 2026
Mean Stage: 23.92 ft  Mean Flow: 1420 cfs
Max Stage: 28.16 ft  Max Flow: 7500 cfs (2017)
Min Stage:  23.01 ft   Min Flow: 753 cfs (2016)

Statistics based on water years: 2002-2025
* statistics estimated based on current rating

Record Stage: 
45.41 ft
Record Flow: 
67700 cfs
Date of Record: 
January 2, 2009

The 4-10 Day Trend Forecast is based on model guidance and uncertainty during this period is greater.

Hydrograph plot for COCO3

Data Used In Plot   "label   United States Geological Survey   


Hydrograph plot for COCO3

Data Used In Plot   "label   United States Geological Survey