National Weather Service Advanced Hydrologic Prediction Service

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Weather Forecast Office Pocatello, ID

Northwest River Forecast Center

Hydrograph

River at a Glance

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About this graph

Tabular Data (UTC)

Tabular Data (MST)

Datum: NGVD29

Metadata

NOTE: Gauge reading may be affected by ice during freezing weather from November to April.

NOTE: Forecasts are not available for the Big Wood River below Magic Dam. Only observed stages are available for this point.

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Upstream Gauge

Flood Categories (in feet)

Major Flood Stage:	0
Moderate Flood Stage:	0
Flood Stage:	9
Action Stage:	8.5
Low Stage (in feet):	-9999

Historic Crests
(1) 15.68 ft on 04/26/1952
(2) 13.31 ft on 04/13/1943
(3) 11.89 ft on 03/31/2017
(4) 11.55 ft on 04/21/1938
(5) 10.69 ft on 05/31/1983
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 6.48 ft on 05/28/2018 (P)
(2) 11.89 ft on 03/31/2017
(3) 5.40 ft on 08/12/2016
(4) 4.91 ft on 07/30/2015
(5) 4.88 ft on 07/17/2014
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

Zoom Level:16

	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
12	or 7747 cfs.. Major flooding will occur near Shoshone in Lincoln County and in the city of Gooding in Gooding County. The flooding will come from both the Big Wood and Little Wood Rivers with water crossing over land from the Big Wood River into the Little Wood River. Highway 75 in Lincoln County will be flooded where it crosses the Big Wood River. The Big and Little Wood Rivers will flood Highway 46 in Gooding County.
11	or 6769 cfs... Water will spill from the Big Wood River over land upstream from Shoshone and enter the Little Wood River causing flooding in Lincoln and Gooding Counties on the Little Wood River. Floodwater will also spill over portions of the Highway 75 and Highway 46 where they cross the Big Wood River in Lincoln and Gooding Counties.
10.5	or 6281 cfs... Water will reach the level of Highway 75 in Lincoln County and Highway 46 in Gooding County. Water will reach a stage of 9.0 feet at the Highway 46 bridge about 24 hours after exceeding a stage of 10.5 feet just below Magic Reservoir. Water will also spill from the Big Wood Channel over land through Cottonwood Slough and enter the Little Wood River upstream from Shoshone. Water will pond behind the railroad embankment near Shoshone.
9.5	or 5311 cfs... Floodwater will spread downstream from Magic Reservoir along the banks of the Big Wood River in Lincoln and Gooding Counties. Floodwater will be about 1 foot below the surface of Highway 75 and Highway 46. Water levels between 8.0 and 8.5 feet will occur at the Highway 46 bridge north of Gooding about 24 hours after discharge reaches 5300 cfs at Magic Reservoir, with minor flooding occurring upstream from the bridge. This will be similar to the flooding, which occurred in 2006.
9	or 4828 cfs... Floodwater will spread downstream from Magic Reservoir along the banks of the Big Wood River in Lincoln and Gooding Counties. Floodwater will be about 1 foot below the surface of Highway 75 and Highway 46. Water levels between 8.0 and 8.5 feet will occur at the Highway 46 bridge north of Gooding about 24 hours after discharge reaches 4669 cfs at Magic Reservoir, with minor flooding occurring upstream from the bridge. This will be similar to the flooding, which occurred in 2006.

About This Location

Latitude: 43.248078° N, Longitude: 114.356614° W, Horizontal Datum: NAD83/WGS84

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	9 ft	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	4661.6 ft	Not Available	Older USGS topographic maps, NGVD29 benchmarks
MSL	Not Available	Not Available	Older USGS topographic maps, MSL benchmarks
Other	Not Available	Not Available

Current/Historical Observations:

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

Additional Information

Gage Analysis

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Hydrologic Resources

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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
Pocatello Weather Forecast Office
1945 Beechcraft Ave
Pocatello, ID 83204
(208) 232-9306
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Page last modified: 1-Mar-2019 12:33 AM

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