Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, as described in the StoryMap here.

Weather Forecast Office Detroit/Pontiac, MI

North Central River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (EDT) Datum: Not Available Metadata

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

Downstream Gauge

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 04/06/1929 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 www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Zoom Level:16 Legend FEMA Layer Gauge Location Disclaimer 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

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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

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) Elevation (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: Corps of Engineers (COE) Info for Vassar U.S. Geological Survey (USGS) Data and Site Info for Vassar

Additional Information

How low could the river get?

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Snow Information

Collaborative Agencies 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 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:30 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities