LONG TOM − FERN RIDGE DAM (FRNO3)
   State:  Oregon
   County:  Lane
   Latitude:  44 7' 24" North
   Longitude:  123 17' 54" West
   Elevation:  374 ft

   Supporting NWS Forecast Office: WFO Portland
   Click for NWS Official River Forecasts for FRNO3
   
Daily Historical Statistics for August 29, 2026
Mean Stage: 1.87 ft  Mean Flow: 83 cfs
Max Stage: 3.77 ft  Max Flow: 842 cfs (1951)
Min Stage:  1.38 ft   Min Flow: 11 cfs (1943)

Statistics based on water years: 1940-2024
* statistics estimated based on current rating

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

Hydrograph plot for FRNO3

Data Used In Plot   "label   United States Geological Survey   


Hydrograph plot for FRNO3

Data Used In Plot   "label   United States Geological Survey   


Hydrograph plot for FRNO3

Data Used In Plot   "label   United States Geological Survey   


Hydrograph plot for FRNO3

Data Used In Plot   "label   United States Geological Survey