OWYHEE − OWYHEE DAM (OWYO3)
   State:  Oregon
   County:  Malheur
   Latitude:  43 38' 57" North
   Longitude:  117 14' 48" West
   Elevation:  2400 ft

   Supporting NWS Forecast Office: WFO Boise
   Click for NWS Official River Forecasts for OWYO3
   

   Action Flow:  1000 cfs (4.04 ft)
   Flood Flow:  3000 cfs (6.70 ft)
   Moderate Flood Flow:  8000 cfs (10.71 ft)
   Major Flood Flow:  13500 cfs (11.78 ft)
Daily Historical Statistics for October 22, 2026
Mean Stage: 1.21 ft  Mean Flow: 46 cfs
Max Stage: 2.21 ft  Max Flow: 245 cfs (1999)
Min Stage:  0.59 ft   Min Flow: 1 cfs (1953)

Statistics based on water years: 1930-2024
* statistics estimated based on current rating

Record Flow: 22900 cfs
Date of Record: April 15, 1952

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

Hydrograph plot for OWYO3

Data Used In Plot   "label   United States Geological Survey   


Hydrograph plot for OWYO3

Data Used In Plot   "label   USBR Observations   


Hydrograph plot for OWYO3

Data Used In Plot   "label   United States Geological Survey   


Hydrograph plot for OWYO3

Data Used In Plot   "label   United States Geological Survey   


Hydrograph plot for OWYO3

Data Used In Plot   "label   USBR Observations