State:  Oregon
   County:  Umatilla
   Latitude:  45 54' 11" North
   Longitude:  119 19' 32" West
   Elevation:  330 ft

   Supporting NWS Forecast Office: WFO Pendleton

Click for NWS Official River Forecasts for UMAO3
Daily Historical Statistics for March 28, 2023
Mean Stage: 3.98 ft  Mean Flow: 1280 cfs
Max Stage: 5.62 ft  Max Flow: 4400 cfs (1981)
Min Stage:  1.77 ft   Min Flow: 0 cfs (1934)

Statistics based on water years: 1905-2021
* 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 UMAO3

For Data Used In Plot   "label