National Weather Service Advanced Hydrologic Prediction Service

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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, as described in the StoryMap here.

Weather Forecast Office Boise, ID

Northwest River Forecast Center

Hydrograph

River at a Glance

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About this graph

Tabular Data (UTC)

Tabular Data (MDT)

Datum: Not Available

Metadata

NOTE: Flood stage level has recently changed.

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the Owyhee River at Owyhee Dam are issued routinely year-round.

Return to Area Map

Upstream Gauge

Flood Categories (in KCFS)

Major Flood Flow:	15.5
Moderate Flood Flow:	6
Flood Flow:	3
Action Flow:	1
Low Stage (in feet):	-9999

Historic Crests
(1) 22,900 cfs on 04/15/1952
(2) 20,900 cfs on 02/25/1986
(3) 19,325 cfs on 04/17/1984
(4) 14,000 cfs on 04/03/1972
(5) 12,000 cfs on 04/16/1983
(6) 11,800 cfs on 04/09/2006
(7) 11,700 cfs on 05/21/1995
(8) 11,000 cfs on 04/02/2011
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 189 cfs on 08/10/2021
(2) 259 cfs on 02/23/2020
(3) 5,110 cfs on 05/31/2019
(4) 208 cfs on 04/27/2018
(5) 5,270 cfs on 04/29/2017
(6) 214 cfs on 07/02/2016
(7) 179 cfs on 06/23/2015
(8) 172 cfs on 06/09/2014
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

Zoom Level:14

	Gauge Location	Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

If you notice any errors in the below information, please contact our Webmaster
15500	Floodwater will cover roads near Owyhee Junction. Some houses near Owyhee Junction will be flooded. Floodwater will cover portions of Highway 201 near Owyhee Junction cutting off access between Adrian and Nyssa. Extensive flooding of farmland will occur.
12500	Floodwater will approach houses near Owyhee Junction. Widespread flooding of farmland will occur between the mouth of the canyon and the Snake River confluence. Flood water will be about 1 foot deep across Overstreet Road near the bridge crossing.
10000	Widespread field flooding will occur downstream from the dam with farmland adjacent to the river underwater. Water will cover portions of Overstreet Road near the bridge crossing. Water will approach the bottom of the Highway 201 Bridge near the town of Owyhee Junction.
6000	Significant field flooding will occur near the river from the mouth of the canyon to the confluence with the Snake River. Water will begin to flow across Overstreet Road near the bridge crossing.
3000	Low lying roads, river access and recreation sites adjacent to the river will flood. Farm equipment near the river may need to be moved.
1000	The low water bridge crossing immediately below Owyhee Dam will be impacted by high water and access to the church camp may be cut off. River access roads and recreation sites below the dam to the mouth of the canyon will be impacted by high water. Low water crossings including Borge Lane and Bob Rice Road will flood. Minor field flooding will occur.
Photos (1) Downstream view of gage house. (2) Cableway used for discharge measurements. (3) Downstream view looking toward gage house.

About This Location

Latitude: 43.654722° N, Longitude: 117.254444° W, Horizontal Datum: NAD83/WGS84

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS flow	Not Available	Not Available	Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum	Elevation (gauge height = 0)	Elevation (gauge height = flood stage)	Elevation information source
NAVD88	Not Available	Not Available	Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29	Not Available	Not Available	Older USGS topographic maps, NGVD29 benchmarks
MSL	Not Available	Not Available	Older USGS topographic maps, MSL benchmarks
Other	2343.67 ft	2354.67 ft

Current/Historical Observations:

U.S. Geological Survey (USGS) Data and Site Info for Owyhee Dam

Additional Information

Recreational River Forecasts for this location are available at: http://www.wrh.noaa.gov/total_forecast/getprod.php?wfo=boi&sid=BOI&pil=HYD

Resources

Hydrologic Resources

Additional Resources

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

NWS Information

National Weather Service
Boise Weather Forecast Office
NIFC Building 3807
Boise, ID 83705-5354
(208) 334-9860
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Page last modified: 2-Nov-2020 7:28 PM

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