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Hydrograph River at a Glance Download
Cass River at Vassar Stage (ft)VSSM4(plotting HGIRZ) Graph Created (10:18PM May 24, 2024)Flood Stage is 14 ft
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Datum: Not Available
NOTE: Stage measured manually and reported by river observer. No automated gauge on-site.

NOTE: 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.

NOTE: Forecasts for the Cass River at Vassar are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - at Wahjamega Upstream Gauge Downstream Gauge Downstream Gauge - at Frankenmuth
Flood Categories (in feet)
Major Flood Stage: 18
Moderate Flood Stage: 15
Flood Stage: 14
Action Stage: 12
Low Stage (in feet): 0

Historic Crests
(1) 24.82 ft on 09/12/1986
(2) 20.80 ft on 03/20/1948
(3) 19.00 ft on 03/18/1942
(4) 18.90 ft on 03/30/1916
(5) 18.50 ft on 05/22/1996
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 15.05 ft on 02/22/2018
(2) 14.95 ft on 04/20/2013
(3) 15.30 ft on 04/13/2013
(4) 14.63 ft on 04/30/2011
(5) 14.28 ft on 04/29/2009
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:16
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
24.8 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 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 East Huron Street begins to flood near the bridge in Vassar.
15 Some homes begin to flood.
14 Some basements of businesses near the river begin to flood. Water Street in Vassar will be flooded up to a foot.
12 Some overflow along the banks begins.
About This Location Collapse

Latitude: 43.370833° N, Longitude: 83.581111° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 14 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 612.38 ft 626.38 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Detroit/Pontiac Weather Forecast Office
9200 White Lake Road
White Lake, MI 48386
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Page last modified: 30-Oct-2020 4:10 PM
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