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This probabilistic forecast is issued by the California Nevada River Forecast Center.

	Hydrograph			River at a Glance			Download			Probability Information Short-term Probabilistic Guidance (Experimental) Weekly Chance of Exceeding Levels Not Available Chance of Exceeding Levels During Entire Period Not Available

For official forecast click here

Experimental Short Range Forecast Uncertainty (AHPS) - External Links: Product Description Document | Customer Survey

About this graph

Forecasts for the Cosumnes River at McConnell are issued routinely year-round.

Return to Area Map

Upstream Gauge

Zoom Level:16

Flood Categories (in feet)

Major Flood Stage:	53.5
Moderate Flood Stage:	53.4
Flood Stage:	44.5
Action Stage:	38.5
Low Stage (in feet):	0

Historic Crests
(1) 49.90 ft on 01/14/1980
(2) 48.50 ft on 01/02/1997
(3) 47.10 ft on 02/18/1986
(4) 47.02 ft on 01/01/2006
(5) 46.56 ft on 02/04/1998
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 41.90 ft on 03/15/2023 (P)
(2) 0.00 ft on 01/01/2023 (P)
(3) 38.99 ft on 12/24/2021
(4) 32.00 ft on 01/29/2021
(5) 38.18 ft on 04/06/2020
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

	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
46.5	At approximately 44,000 cfs, water exits the river upstream and downstream of Highway 99. Dillard Road is flooded from Highway 99 to Riley Road. Twin Cities Road is flooded from Hardesty Lane to Christensen Road.
44.5	Flood stage.
41.5	The Cosumnes River overflow channel begins to flow.
38.5	Monitor Stage.

Other Real-time and/or Archive Data Sources:

Corps of Engineers (COE) Info for McConnell

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
Sacramento Weather Forecast Office

Sacramento, CA
(916) 979-3051
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Page last modified: 2-Nov-2020 7:27 PM

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