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
2018*
24,200
42.92
Mar 23, 2018
2017*
33,900
43.99
Jan 11, 2017
2016*
6,626
40.20
Mar 14, 2016
2015*
5,766
39.31
Feb 9, 2015
2014*
2,370
43.05
Feb 10, 2014
 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: Mostly cloudy. Highs 72 to 77. Light winds.

Tonight: Mostly cloudy. Lows around 47. South winds up to 10 mph.

Saturday: Mostly cloudy in the morning then becoming partly cloudy. Highs 61 to 66. Southwest winds up to 10 mph.

Saturday Night: Mostly cloudy. A slight chance of rain showers after midnight. Colder. Lows 37 to 43. Northwest winds up to 15 mph.

Sunday: Mostly cloudy in the morning then becoming partly cloudy. Breezy. Highs 57 to 62. Northwest winds 10 to 15 mph shifting to the north 15 to 25 mph in the afternoon.

Sunday Night: Clear. Lows 37 to 45.

Monday: Sunny. Highs around 67.

Monday Night through Tuesday Night: Clear. Lows 40 to 50. Highs 71 to 76.

Wednesday and Wednesday Night: Mostly clear. Highs around 73. Lows 42 to 50.

Thursday: Partly cloudy. Highs around 71.
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.