National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service
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COSUMNES RIVER - MCCONNELL (MCNC1)
Latitude: 38.36º NLongitude: 121.34º WElevation: 5 Feet
Location: Sacramento County in CaliforniaRiver Group: San Joaquin
Monitor Stage: 40.0 FeetFlood Stage: 46.0 Feet

Observed Data Credit
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Raw streamflow data is provided by the California Department of Water Resources.
View CA DWR Data for this station location.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2015*
5,766
39.31
Feb 9, 2015
2014*
2,370
43.05
Feb 10, 2014
2013*
4,332
37.23
Dec 3, 2012
2012*
7,715
41.07
Feb 27, 2007
2011*
19,014
44.80
Mar 17, 2011
 Historical High Stage/Flow Events (Period of Record - Jan 1952 to Present)
1997*
--
48.50
Jan 02, 1997
1986
--
47.10
Feb 18, 1986
2006*
36,209
47.02
Jan 01, 2006
1998*
--
46.56
Feb 04, 1998
 * Discharge affected by regulation or diversion
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ017)
Today: Rain, breezy. Highs around 57. Southeast winds 10 to 15 mph with gusts to around 30 mph increasing to 10 to 25 mph with gusts to around 40 mph in the afternoon.

Tonight: Mostly cloudy. Rain likely in the evening, then a chance of rain showers after midnight. Lows 43 to 49. Southeast winds 10 to 15 mph. Gusts up to 30 mph in the evening.

Saturday: Mostly cloudy with a slight chance of rain showers in the morning, then partly cloudy in the afternoon. Highs around 63. Light winds.

Saturday Night: Mostly cloudy. Lows around 45. South winds up to 10 mph.

Sunday: Mostly cloudy. A slight chance of rain in the morning, then a chance of rain in the afternoon. Highs 55 to 60. South winds up to 10 mph.

Sunday Night: Rain showers. Lows around 46.

Monday: Mostly cloudy with a chance of rain showers. Highs 61 to 66.

Monday Night: Mostly cloudy with a slight chance of rain showers. Lows 42 to 48.

Tuesday and Tuesday Night: Mostly clear. Highs around 70. Lows 42 to 52.

Wednesday and Wednesday Night: Partly cloudy. Highs 70 to 76. Lows 44 to 52.

Thursday: Partly cloudy with a slight chance of rain showers. Highs 64 to 69.
Impacts - E19 Information
39.0 FeetThe Cosumnes River overflow channel begins to flow.
40.0 FeetWater exits 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.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Sacramento Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.