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About this graph
Forecasts for the Snake River near Shelley are issued routinely year-round.
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Upstream Locations Upstream Gauge
Zoom Level:15
Flood Categories (in feet)
Major Flood Stage: 13.5
Moderate Flood Stage: 13
Flood Stage: 12.5
Action Stage: 12
Low Stage (in feet): -9999

Historic Crests
(1) 16.97 ft on 06/17/1918
(2) 16.05 ft on 06/17/1997
(3) 14.68 ft on 06/22/1917
(4) 14.36 ft on 05/29/1928
(5) 13.15 ft on 05/28/2011
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 8.01 ft on 05/31/2022
(2) 8.74 ft on 08/05/2021
(3) 10.11 ft on 06/07/2020
(4) 11.04 ft on 04/24/2019
(5) 11.85 ft on 06/03/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.22 ft on 11/05/1934
KML Image
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
13.5 Major flooding of farmland is likely. Water may cover a few county roads near the river. Low lying properties near the river around Shelley and Firth may be inundated with water.
13 Moderate lowland flooding will occur along the river.
12.5 Water will cover the end of Highline Road near the riverjust south of Firth. Some outbuildings at the end of Highline Road will have water in or around them and water may cover some driveways. Lowland flooding will occur adjacent to the river around Shelley downstream to near Rose.
12
Photos
(1) SHYI1_googleearth
(2) SHYI1_map
(3) SHYI1_SnakeShelley_gage
(4) SHYI1_looking_upstream
(5) SHYI1_looking_downstream

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 45400 CFS or 15.62 ft
50   Year Peak Flood 51400 CFS or 16.68 ft
100 Year Peak Flood 57300 CFS or 17.69 ft
200 Year Peak Flood 63200 CFS or 18.67 ft
500 Year Peak Flood 71100 CFS or 19.94 ft
Collaborative Agencies Collapse
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: 2-Nov-2020 7:28 PM
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