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
2020*
308
5.17
Mar 17, 2020
2019*
6,080
15.14
Mar 6, 2019
2018*
2,180
9.62
Nov 26, 2017
2017*
7,650
17.34
Feb 10, 2017
2016*
2,281
9.84
Jan 18, 2016
 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: Partly cloudy in the morning then clearing. Breezy. Highs 70 to 80. Northwest winds 10 to 25 mph.

Tonight: Mostly clear. Lows 45 to 55. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Wednesday: Mostly sunny. Highs 76 to 84. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Wednesday Night: Mostly clear. Lows 48 to 58. Northwest winds up to 15 mph.

Thursday: Sunny. Highs 82 to 88. Light winds becoming northwest around 10 mph in the afternoon.

Thursday Night: Mostly clear. Lows 52 to 62.

Friday: Sunny. Highs 86 to 92.

Friday Night: Mostly clear. Lows 54 to 64.

Saturday: Sunny. Highs 85 to 90.

Saturday Night: Mostly clear. Lows 54 to 64.

Sunday: Sunny. Highs 84 to 90.

Sunday Night and Monday: Mostly clear. Lows 53 to 63. Highs 82 to 90.
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.