LONG TOM − AT MONROE (MNRO3)
   State:  Oregon
   County:  Benton
   Latitude:  44 18' 47" North
   Longitude:  123 17' 43" West
   Elevation:  271 ft

   Supporting NWS Forecast Office: WFO Portland
   Click for NWS Official River Forecasts for MNRO3
   

   Action Stage:  8.5 ft
   Flood Stage:  9 ft
   Moderate Flood Stage:  11 ft
   Major Flood Stage:  12 ft
Daily Historical Statistics for February 08, 2026
Mean Flow: 1780 cfs
Max Flow: 13700 cfs (1926)
Min Flow: 28 cfs (1977)

Statistics based on water years: 1922-2025
* statistics estimated based on current rating

Record Stage: 10.42 ft
Record Flow: 19300 cfs
Date of Record: January 2, 1943

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

Hydrograph plot for MNRO3

Data Used In Plot   "label   ---


Hydrograph plot for MNRO3

Data Used In Plot   "label   ---