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This probabilistic forecast is issued by the Northwest River Forecast Center.
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About this graph
Forecasts for the Big Wood River near Ketchum are issued routinely year-round.
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Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 10
Moderate Flood Stage: 9
Flood Stage: 8
Action Stage: 7.5
Low Stage (in feet): -9999

Historic Crests
(1) 9.89 ft on 05/07/2017
(2) 8.74 ft on 04/26/2012
(3) 7.61 ft on 06/24/2011
(4) 7.49 ft on 06/06/2019
(5) 7.35 ft on 05/27/2018
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 7.49 ft on 06/06/2019
(2) 7.35 ft on 05/27/2018
(3) 9.89 ft on 05/07/2017
(4) 7.17 ft on 06/06/2016
(5) 6.45 ft on 06/01/2015
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.08 ft on 03/18/1966
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Gauge LocationGauge Map Marker
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
10 or 5355 cfs... Widespread lowland flooding from Easley Hot Springs dowriver to Ketchum. Numerous properties will have water inundation. Sun Peak Picnic area flooded; Idaho Highwyat 75 may have erosion problems in several locations.
9 or 3075 cfs... Widespread lowland flooding from Easley Hot Springs downriver to Ketchum. Many properties will have water inundation. Sun Peak Picnic area flooded; Idaho Highway 75 may have bank erosion from Cottonwood Lane to Glassford Drive.
8 or 1559 cfs... Lowland flooding from near the SNRA building downriver into Ketchum. Property near Chocolate Gulch Road downstream to Ketchum will have flooding; Sun Peak Picnic Area flooded; Fox Creek Trailhead may be closed
7.5 or 1038 cfs... Near bankfull from Easley Hot Springs downriver to Ketchum.

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
Historical Peak Flows     (Scroll to Streamflow Statistics for more years)
USGS Historical Peak Flows Explanation
Graphical View of Historical Peak Flows and Gage Analysis 

25   Year Peak Flood 1890 CFS or 8.32 ft
50   Year Peak Flood 2130 CFS or 8.41 ft
100 Year Peak Flood 2370 CFS or 8.57 ft
200 Year Peak Flood 2620 CFS or 8.73 ft
500 Year Peak Flood 2950 CFS or 8.92 ft

 
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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
Pocatello Weather Forecast Office
1945 Beechcraft Ave
Pocatello, ID 83204
(208) 232-9306
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Page last modified: 30-Oct-2020 4:08 PM
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