Major Flood
20 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: THTC1). Live data may be limited. View on NWS AHPS →
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
19 ft
Minor Flood
17 ft
Action Stage
12 ft
What Floods at Each Level
29.6 ft
Top of Levee Left Bank
17.25 ft
Some local farm roads are closed. Low lying areas along the river are flooded.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jan 2, 1997 | 21.69 ft | — |
| Feb 11, 2017 | 20.56 ft | — |
| Jan 1, 2023 | 20.23 ft | — |
About This Gauge
NWS LID
THTC1
River
Mokelumne River
County
San Joaquin, CA
Coordinates
38.2553°N, 121.4400°W
Get Flood Alerts for Mokelumne River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Mokelumne River at Benson's Ferry?
The Mokelumne River at Benson's Ferry gauge is maintained by USGS and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Mokelumne River at Benson's Ferry?
The NWS-defined flood stage for Mokelumne River at Benson's Ferry is 17 feet. Action stage begins at 12 feet. Moderate flooding starts at 19 feet, and major flooding at 20 feet.
How do I get alerts when Mokelumne River rises?
Download StormCast free on Google Play, go to River Gauges, and add Mokelumne River at Benson's Ferry to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Mokelumne River at Benson's Ferry gauge located?
The gauge is located in San Joaquin County, California at coordinates 38.2553°N, 121.4400°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: Observations Courtesy of CA Department of Water Resources
- Crests prior to 10/1/2006 are in an old datum. Datum change to NAVD88 occurred 10/1/2006.<a href="http://cdec.water.ca.gov/misc/datum_change2006.html"> See LINK for correction value.</a>