National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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MORMON SLOUGH - BELLOTA (MSGC1)
Latitude: 38.05º NLongitude: 121.01º WElevation: 130 Feet
Location: San Joaquin County in CaliforniaBulletin Group: San JoaquinRiver Group: North San Joaquin
Issuance Time: Feb 25 2024 at 7:44 AM PSTNext Issuance: Feb 26 2024 at 9:00 AM PST
Monitor Stage: 16.0 FeetFlood Stage: 22.0 FeetDanger Stage: 23.0 Feet

Please Note: Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.
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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Year:  
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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
2022*
1,950
9.21
Oct 25, 2021
2021*
839
6.78
Jan 28, 2021
2020*
308
5.17
Mar 17, 2020
2019*
6,080
15.14
Mar 6, 2019
2018*
2,180
9.62
Nov 26, 2017
 Historical High Stage/Flow Events (Period of Record - Dec 1997 to Present) - Ranked by Flow
1998*
9,395
18.48
Feb 3, 1998
2006*
9,328
18.40
Apr 4, 2006
 * Discharge affected by regulation or diversion
Location Photographs
ESRI™ Locator Map
Impacts - E19 Information
9.0 FeetWater rises out of the pilot channel but not yet on the levee slopes.
14.2 FeetUOP research within the Calaveras River channel is affected by water levels.
16.0 FeetBike trail within lower Calaveras River channel is flooded
22.0 FeetFlood Stage.
23.0 FeetDanger Stage.
31.9 FeetWater will overflow toward Bellota and Highway 26.
Official 7 Day National Weather Service Forecast   (CAZ019)
Today: Partly cloudy in the morning, then mostly cloudy with a slight chance of rain showers in the afternoon. Highs 57 to 65. Northwest winds up to 10 mph.

Tonight: Mostly cloudy. A slight chance of rain showers in the evening. Colder. Lows 37 to 43. West winds up to 10 mph with gusts to around 20 mph.

Tuesday: Mostly cloudy in the morning then clearing. Highs 55 to 63. Northwest winds 10 to 15 mph.

Tuesday Night: Clear. Lows 37 to 43. Northwest winds up to 15 mph.

Wednesday: Sunny. Highs 60 to 67. South winds up to 10 mph.

Wednesday Night: Mostly clear. Lows 40 to 46.

Thursday: Mostly cloudy with a slight chance of rain showers. Highs 55 to 65.

Thursday Night and Friday: Rain showers. Lows 46 to 51. Highs 51 to 61.

Friday Night: Rain showers. Breezy. Lows 39 to 44.

Saturday and Saturday Night: Rain showers. Highs 47 to 57. Lows 34 to 44.

Sunday: Mostly cloudy with a chance of rain showers. Highs 47 to 56.
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.