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Visit for access to new EXPERIMENTAL products and services from the National Water Center: National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook and the National Water Center Visualization Services, a suite of geospatial services depicting River Forecast Center and National Water Model information.

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Hydrograph River at a Glance Download
Cass River near Cass City Stage (ft)USGS--Water Resources of the United StatesCSSM4(plotting HGIRP) Graph Created (12:03PM Sep 26, 2022)Flood Stage is 14 ft
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Datum: Not Available
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: Gauge awaiting repair - automated readings are not available at this time.

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

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Downstream Gauge Downstream Gauge - at Wahjamega
Flood Categories (in feet)
Major Flood Stage: 20
Moderate Flood Stage: 18
Flood Stage: 14
Action Stage: 12
Low Stage (in feet): -9999

Historic Crests
(1) 19.82 ft on 09/12/1986
(2) 15.81 ft on 02/22/1997
(3) 15.80 ft on 03/20/1948
(4) 15.61 ft on 04/06/1985
(5) 15.60 ft on 05/21/1996
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(P): Preliminary values subject to further review.

Recent Crests
(1) 14.68 ft on 02/13/2009
(2) 14.00 ft on 03/06/2004
(3) 11.79 ft on 03/10/2002
(4) 15.81 ft on 02/22/1997
(5) 15.60 ft on 05/21/1996
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(P): Preliminary values subject to further review.

Low Water Records
(1) 4.41 ft on 09/16/1995
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For more information on your flood risk go to

Zoom Level:16
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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
20 Flood damage may begin to occur at the wastewater tretment plant. Flood waters will be nearing the waste water tanks.
19.8 The record flood of September 12, 1986 is reached. Flooding begins to damage about 5 homes and several mobile homes. Water reaches window level of one of the homes near the confluence of the north and south branches of the Cass River.
15 Cropland damage begins to occur during growing season.
14 Damaging flooding begins to occur at several homes.
13 A house about 150 feet from the river begins to flood.
12 Three homes and one mobile home near the fork of the north and south branch of the Cass River are affected mainly with yard flooding.
7 Minor overflow begins on the south side of the river.
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Latitude: 43.584167° N, Longitude: 83.176111° 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 29 697.92 ft 711.92 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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How low could the river get? For additional details please refer to:
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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
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Detroit/Pontiac Weather Forecast Office
9200 White Lake Road
White Lake, MI 48386
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