NEHALEM − FOSS (FSSO3)
   State:  Oregon
   County:  Tillamook
   Latitude:  45 42' 15" North
   Longitude:  123 45' 15" West
   Elevation:  33 ft

   Supporting NWS Forecast Office: WFO Portland

   
Click for NWS Official River Forecasts for FSSO3

   Action Stage:  
13 ft
   Flood Stage:  
15 ft
   Moderate Flood Stage:  
20 ft
   Major Flood Stage:  
24 ft
Daily Historical Statistics for October 18, 2025
Mean Stage: 3.69 ft  Mean Flow: 726 cfs
Max Stage: 9.87 ft  Max Flow: 9860 cfs (2017)
Min Stage:  1.15 ft   Min Flow: 58 cfs (1953)

Statistics based on water years: 1940-2022
* statistics estimated based on current rating

Record Stage: 
29.56 ft
Record Flow: 
70300 cfs
Date of Record: 
February 8, 1996

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

Hydrograph plot for FSSO3


For Data Used In Plot   "label


Hydrograph plot for FSSO3


For Data Used In Plot   "label