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 CaliforniaRiver Group: San Joaquin
Monitor Stage: 16.0 FeetFlood Stage: 22.0 FeetDanger Stage: 23.0 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
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
Official 7 Day National Weather Service Forecast   (CAZ019)
Today: Rain showers until late afternoon, then rain showers and a slight chance of thunderstorms late in the afternoon. Breezy. Highs 51 to 61. South winds 10 to 15 mph with gusts to around 25 mph increasing to 15 to 25 mph with gusts to around 35 mph in the afternoon.

Tonight: Rain showers and a slight chance of thunderstorms. Windy. Lows 40 to 47. South winds 15 to 30 mph with gusts to around 50 mph.

Saturday: Rain showers and a slight chance of thunderstorms. Breezy. Highs 46 to 56. Southwest winds 15 to 25 mph. Gusts up to 40 mph decreasing to 30 mph in the afternoon.

Saturday Night: Rain showers and a slight chance of thunderstorms. Lows 38 to 43. South winds 10 to 15 mph with gusts to around 35 mph.

Sunday: Mostly cloudy with a chance of rain showers. Highs 49 to 57. South winds 10 to 15 mph.

Sunday Night: Mostly cloudy with a slight chance of rain showers. Lows 33 to 39.

Monday: Mostly sunny. Patchy frost. Highs 51 to 60.

Monday Night and Tuesday: Partly cloudy with a slight chance of rain showers. Lows 37 to 42. Highs 54 to 63.

Tuesday Night: Mostly cloudy with a chance of rain showers. Lows around 42.

Wednesday and Wednesday Night: Partly cloudy with a slight chance of rain showers. Highs 54 to 62. Lows 38 to 44.

Thursday: Mostly sunny. Highs 53 to 61.
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.
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.