Major Flood
67 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
66 ft
Minor Flood
55 ft
Action Stage
50.5 ft
What Floods at Each Level
67 ft
Extensive flooding occurs. Flows in excess of 40,000 cfs could cause extensive damage to residential, industrial and commercial development in Modesto downstream of gage.
55 ft
This is channel capacity through downtown Modesto.
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 4, 1997 | 71.21 ft | 55,800 cfs |
| Dec 8, 1950 | 69.19 ft | 57,000 cfs |
| Dec 24, 1955 | 66.43 ft | 37,600 cfs |
About This Gauge
USGS Site
NWS LID
MDSC1
River
Tuolumne River
County
Stanislaus, CA
Coordinates
37.6271°N, 120.9843°W
Get Flood Alerts for Tuolumne 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 Tuolumne River at Modesto?
The Tuolumne River at Modesto gauge is maintained by USGS (site 11290000) 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 Tuolumne River at Modesto?
The NWS-defined flood stage for Tuolumne River at Modesto is 55 feet. Action stage begins at 50.5 feet. Moderate flooding starts at 66 feet, and major flooding at 67 feet.
How do I get alerts when Tuolumne River rises?
Download StormCast free on Google Play, go to River Gauges, and add Tuolumne River at Modesto 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 Tuolumne River at Modesto gauge located?
The gauge is located in Stanislaus County, California at coordinates 37.6271°N, 120.9843°W. USGS site number: 11290000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey, Observations Courtesy of CA Department of Water Resources