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Hydrograph River at a Glance Download
No Hydrograph Found
About this graph
Tabular Data (UTC)
Tabular Data (MST)
XML Data
RSS Files
Datum: Not Available
NOTE: Gauge reading may be affected by ice.

NOTE: Forecasts for the Boise River near Twin Springs are issued routinely year-round.

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Downstream Gauge Downstream Locations
Flood Categories (in KCFS)
Not Available

Historic Crests
(1) 13.84 ft on 04/27/2012
(2) 13.09 ft on 05/07/2017
(3) 12.54 ft on 05/16/2011
(4) 12.49 ft on 04/09/2019
(5) 12.20 ft on 12/23/1964
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 12.49 ft on 04/09/2019
(2) 10.59 ft on 05/09/2018
(3) 13.09 ft on 05/07/2017
(4) 10.37 ft on 04/14/2016
(5) 9.64 ft on 02/09/2015
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:16
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Gauge LocationGauge Map Marker
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.
About This Location Collapse

Latitude: 43.668056° N, Longitude: 115.725278° 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)
(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 3255.69995117188 ft 3156.69995117188 ft  

Current/Historical Observations:

Additional Information Collapse
The Middle Fork of the Boise River is a major tributary to Arrowrock Reservoir total unregulated inflow.
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Hydrologic Resources Additional Resources
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
Boise Weather Forecast Office
NIFC Building 3807
Boise, ID 83705-5354
(208) 334-9860
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Page last modified: 4-Mar-2019 11:28 PM
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