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 (4.08 ft)
   Flood Flow:  3000 cfs (6.73 ft)
   Moderate Flood Flow:  8000 cfs (10.71 ft)
   Major Flood Flow:  13500 cfs (11.78 ft)
Daily Historical Statistics for April 30, 2026
Mean Stage: 4.28 ft  Mean Flow: 1110 cfs
Max Stage: 11.78 ft  Max Flow: 13500 cfs (1952)
Min Stage:  1.04 ft   Min Flow: 23 cfs (1939)

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   ---


Hydrograph plot for OWYO3

Data Used In Plot   "label   USBR Observations   


Hydrograph plot for OWYO3

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Hydrograph plot for OWYO3

Data Used In Plot   "label   ---


Hydrograph plot for OWYO3

Data Used In Plot   "label   USBR Observations