TUALATIN − AT WEST LINN (WSLO3)
   State:  Oregon
   County:  Clackamas
   Latitude:  45 21' 2" North
   Longitude:  122 40' 32" West
   Elevation:  85 ft

   Supporting NWS Forecast Office: WFO Portland

   
Click for NWS Official River Forecasts for WSLO3

   Action Stage:  
11 ft
   Flood Stage:  
13.5 ft
   Moderate Flood Stage:  
14.5 ft
   Major Flood Stage:  
15 ft
Daily Historical Statistics for May 08, 2025
Mean Stage: 4.35 ft  Mean Flow: 885 cfs
Max Stage: 7.66 ft  Max Flow: 3810 cfs (1963)
Min Stage:  2.80 ft   Min Flow: 189 cfs (1939)

Statistics based on water years: 1929-2023
* statistics estimated based on current rating

Record Stage: 
18.32 ft
Record Flow: 
26400 cfs
Date of Record: 
February 10, 1996

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

Hydrograph plot for WSLO3


For Data Used In Plot   "label