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*** IMPORTANT ***  Week of June 16 - Website Data Outage [View details]

MORMON SLOUGH - BELLOTA (MSGC1)
Latitude:
38.05º N
Longitude:
121.01º W
Elevation:
130 Feet
Location: San Joaquin County in CA
River Group: San Joaquin
Forecast Issued: Jun 03 2025 at 8:23 AM PDT
Next Issuance: Jun 04 2025 at 9:00 AM PDT

Action/
Monitor:
16.0 Ft
Minor
Flood:
22.0 Ft
Moderate
Flood:
30.9 Ft
Major
Flood:
31.9 Ft

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Graphical River Forecast - MORMON SLOUGH - BELLOTA (MSGC1)Graphical River Forecast - MORMON SLOUGH - BELLOTA (MSGC1)

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2024*
1,100
7.44
Mar 3, 2024
2023*
11,400
21.80
Jan 16, 2023
2022*
1,950
9.21
Oct 25, 2021
2021*
839
6.78
Jan 28, 2021
2020*
308
5.17
Mar 17, 2020
 Historical High Stage/Flow Events (Period of Record - Dec 1997 to Present) - Ranked by Flow
2023*
11,400
21.80
Jan 16, 2023
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

Flood Impacts
31.9 FeetTop of Levee right bank levee. Water will overflow toward Bellota and Highway 26.
23.0 FeetDanger Stage
22.0 FeetFlood Stage
16.0 FeetMonitor Stage - Bike trail within lower Calaveras River channel flooded.
14.2 FeetUOP research within the Calaveras River channel is affected by water levels.
9.0 FeetWater rises out of the pilot channel but not yet on the levee slopes.