WILLAMETTE − AT SALEM (SLMO3)
   State:  Oregon
   County:  Marion
   Latitude:  44 56' 39" North
   Longitude:  123 2' 30" West
   Elevation:  106 ft

   Supporting NWS Forecast Office: WFO Portland

   
Click for NWS Official River Forecasts for SLMO3
   


   Action Stage:  
21.2 ft
   Flood Stage:  
28 ft
   Moderate Flood Stage:  
30 ft
   Major Flood Stage:  
32 ft
Daily Historical Statistics for June 20, 2026
Mean Stage: 6.85 ft  Mean Flow: 12400 cfs
Max Stage: 12.74 ft  Max Flow: 39400 cfs (1937)
Min Stage:  4.28 ft   Min Flow: 4400 cfs (1940)

Statistics based on water years: 1910-2024
* statistics estimated based on current rating

Record Stage: 
47 ft
Record Flow: 
500000 cfs
Date of Record: 
December 4, 1861

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

Hydrograph plot for SLMO3

Data Used In Plot   "label   USACE Observations   USACE Map