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COSUMNES RIVER - MCCONNELL (MCNC1)
Latitude: 38.36º NLongitude: 121.34º WElevation: 5 Feet
Location: Sacramento County in CaliforniaBulletin Group: San JoaquinRiver Group: North San Joaquin
Issuance Time: Jun 22, 2025 at 8:49 AM PDT
Action/Monitor: 38.5 FeetMinor Flood: 44.5 FeetModerate Flood: 53.4 FeetMajor Flood: 53.5 Feet
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.
Threshold Exceedance Plot                  Product Information        CSV Ensemble Files (Data in kcfs):  Forecast Group  |  MCNC1

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What information is considered in this forecast?
Verification / Historical Plots
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Location Photographs

ESRI™ Locator Map
Flood Impacts
46.5 FeetAt 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 FeetFlood stage.
41.5 FeetThe Cosumnes River overflow channel begins to flow.
38.5 FeetMonitor Stage.
Official 7 Day National Weather Service Forecast   (CAZ017)
Today: Sunny, warmer. Highs 89 to 95. Northwest winds up to 10 mph with gusts to around 20 mph.

Tonight: Clear. Lows 53 to 62. Southwest winds up to 10 mph with gusts to around 20 mph.

Tuesday: Sunny. Highs 85 to 93. South winds up to 10 mph.

Tuesday Night: Clear. Lows 51 to 59. South winds up to 15 mph.

Wednesday: Sunny. Highs 87 to 95. South winds up to 10 mph.

Wednesday Night: Clear. Lows 54 to 62.

Thursday: Sunny. Highs 90 to 96.

Thursday Night through Sunday: Clear. Lows 57 to 67. Highs 89 to 99.