Major Flood
18 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
15 ft
Minor Flood
14 ft
Action Stage
12 ft
What Floods at Each Level
24.8 ft
All of downtown Vassar floods. Most businesses and about 50 homes flood. The flood waters reach the intersection of Main and Huron Streets on the northwest side of the downtown area, and the intersection of Huron and East Streets on the southeast side. One story homes on Cass Avenue along the river may flood up to the eaves.
17.7 ft
Many businesses and homes flood with considerable damage. Some homes flood with up to 2 feet of water. Back water from the Moore drain could cause flooding to reach up to 4 feet deep in some businesses. The river also begins touching the bottom of the M-15 bridge.
17 ft
East Huron Street begins to flood near the bridge in Vassar.
15 ft
Some homes begin to flood.
14 ft
Some basements of businesses near the river begin to flood. Water Street in Vassar will be flooded up to a foot.
12 ft
Some overflow along the banks begins.
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 |
|---|---|---|
| Sep 11, 1986 | 24.82 ft | — |
| Mar 19, 1948 | 20.8 ft | 18,000 cfs |
| Mar 17, 1942 | 19 ft | — |
About This Gauge
Get Flood Alerts for Cass 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 Cass River at Vassar?
The Cass River at Vassar gauge is maintained by USGS (site 04151000) 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 Cass River at Vassar?
The NWS-defined flood stage for Cass River at Vassar is 14 feet. Action stage begins at 12 feet. Moderate flooding starts at 15 feet, and major flooding at 18 feet.
How do I get alerts when Cass River rises?
Download StormCast free on Google Play, go to River Gauges, and add Cass River at Vassar 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 Cass River at Vassar gauge located?
The gauge is located in Tuscola County, Michigan at coordinates 43.3708°N, 83.5811°W. USGS site number: 04151000. Data is provided by the U.S. Geological Survey and the National Weather Service.
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On This River
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Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey, Observations courtesy of U.S. Army Corps of Engineers
- Stage measured manually and reported by river observer. No automated gauge on-site.
- River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.