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
2016*
6,626
40.20
Mar 14, 2016
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
 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: Partly to mostly cloudy. Patchy fog in the morning. Highs around 67. Light winds.

Tonight: Mostly cloudy. Lows around 49. North winds up to 10 mph.

Saturday: Mostly cloudy. Highs 64 to 70. Southeast winds up to 10 mph.

Saturday Night: Mostly cloudy. A chance of rain after midnight. Lows 51 to 57. South winds up to 10 mph.

Sunday: Rain. Highs around 61. South winds 10 to 15 mph with gusts to around 25 mph.

Sunday Night: Rain, colder. Lows 44 to 50.

Monday: Mostly cloudy with a chance of rain showers. Highs around 58.

Monday Night and Tuesday: Mostly clear. Lows 38 to 44. Highs around 60.

Tuesday Night: Mostly clear. Patchy fog. Lows around 42.

Wednesday: Partly cloudy. Patchy fog. Highs around 61.

Wednesday Night: Partly cloudy. Breezy. Lows around 42.

Thursday: Mostly sunny. Highs around 62.
Impacts - E19 Information
39.0 FeetThe Cosumnes River overflow channel begins to flow.
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.