USGS Crews Measure Major Flooding in Lower Michigan

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U.S. Geological Survey field crews are measuring record flooding on the Tittabawassee River in Midland, Michigan, following a heavy rainfall event.

Installing a rapid deployment gage, MI

A USGS hydrologic technician finishes installation of a rapid-deployment streamgage on the Tittabawassee River in Midland, Michigan. A USGS crew in the distance makes streamflow measurements using a boat-mounted acoustic Doppler current profiler. (Credit: Tom Weaver, USGS)

The USGS Tittabawassee River in Midland streamgage measured record water levels, called river stage, at about 35 feet on Wednesday. This level is the highest ever recorded during the streamgage’s 84 years of record, and exceeds the previous highest stage by about two feet. Water levels are beginning to recede as of this morning, and two two-person USGS crews are measuring streamflow in Grayling and Lansing. They also installed a rapid-deployment gage to provide backup to the permanent streamgage at the Midland site.

Strong storms passed through parts of the Midwest starting last Thursday, causing minor-to-major flooding in some lower Michigan locations. On Tuesday, May 19, two large dams on the Tittabawssee River failed in succession, causing two lakes upstream of Midland to drain. The USGS crews will continue to monitor water levels and streamflow as flooding continues.

Elsewhere in Michigan, the USGS Rifle River streamgage near Sterling crested on Tuesday with a record streamflow of 7,460 cubic feet per second. There are currently four additional single-person crews measuring streams throughout lower Michigan, and they will continue to monitor flooding for at least another day.

Information collected by the USGS during flooding is critical for resource managers and emergency responders to help protect life and property. The USGS coordinates efforts with the National Weather Service, US Army Corps of Engineers, Bureau of Reclamation and many local and state partners.

There are about 200 streamgages in Michigan that measure water levels, streamflow and rainfall. When flooding occurs, USGS crews make numerous streamflow measurements to verify the data USGS provides to federal, tribal, state and local agencies, as well as to the public.

For more than 125 years, the USGS has monitored flow in selected streams and rivers across the U.S. The information is routinely used for water supply and management, monitoring floods and droughts, bridge and road design, determination of flood risk and for many recreational activities.

Access current flood and high flow conditions across the country by visiting the USGS WaterWatch website. Receive instant, customized updates about water conditions in your area via text message or email by signing up for USGS WaterAlert. See where floodwaters go by following a stream trace at Streamer. View water data on your mobile device. Learn how a USGS streamgage works.

Animation of Michigan Flooding

This animation shows flooding that followed dam breaches near Midland, Michigan, on May 19, 2020. (Public domain.)