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
Issuance Time: Jan 26 2021 at 2:27 PM PSTNext Issuance: Jan 27 2021 at 9:00 AM PST
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.

Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.
Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2019*
13,200
42.04
Feb 15, 2019
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
 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 showers likely. Windy. Highs around 49. Southeast winds 15 to 35 mph. Gusts up to 60 mph decreasing to 40 mph in the afternoon.

Tonight: Rain showers. Breezy. Lows around 46. Southeast winds 15 to 25 mph.

Thursday: Rain showers. Highs 49 to 55. South winds 10 to 20 mph. Gusts up to 30 mph in the morning.

Thursday Night: Mostly cloudy. Rain showers likely in the evening, then a chance of rain showers after midnight. Lows around 41. Southeast winds up to 15 mph.

Friday: Mostly cloudy with a slight chance of rain showers. Highs 50 to 56. Light winds becoming southwest up to 10 mph in the afternoon.

Friday Night: Mostly cloudy with a chance of rain showers. Lows 40 to 46.

Saturday: Mostly cloudy with a slight chance of rain showers. Highs 51 to 57.

Saturday Night: Mostly cloudy with a slight chance of rain showers. Lows 41 to 47.

Sunday and Sunday Night: Mostly cloudy with a chance of rain showers. Highs 54 to 60. Lows 41 to 50.

Monday and Monday Night: Rain showers likely. Highs 53 to 59. Lows 43 to 50.

Tuesday: Mostly cloudy with a chance of rain showers. Highs 51 to 57.
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.