Agencies Team Up to Restore Native Mussels in the Cuyahoga River

Buffalo District
Published Jan. 12, 2026
Updated: Dec. 2, 2025
The team of partnering agencies gather in specific quadrants to place fatmucket mussels in the sands of the Cuyahoga River.

The U.S. Army Corps of Engineers, Buffalo District worked in collaboration with partnering agencies to help mussel restoration and reintroduction in the Cuyahoga River, Peninsula, Ohio, Sept. 16, 2025. The Fatmucket mussels were processed by attaching tiny numbered tags and P.I.T. (Passive Integrated Transponders), to monitor their movement and growth then placed within shallow divots in the river. (U.S. Army photo by Andre' M. Hampton)

Fatmucket mussels are tagged by partnering agencies during the mussel reintroduction project.

The USACE Buffalo District working in collaboration with the National Park Service, U.S. Fish and Wildlife Service, Cleveland State University, Edge Engineering & Science, and the Ohio Department of Natural Resources help tag Fatmucket mussels that will be placed in the Cuyahoga River to aid their restoration, Cleveland, Ohio, Sept. 15, 2025. Approximately 670 Fatmucket mussels will be processed by attaching tiny numbered tags and P.I.T. (Passive Integrated Transponders), similar to the chips used to track pets, to monitor their movement and growth. (U.S. Army photo by Andre' M. Hampton)

A Fatmucket mussel with a number tag is placed in the sand of the Cuyahoga River.

The U.S. Army Corps of Engineers, Buffalo District worked in collaboration with partnering agencies to help mussel restoration and reintroduction in the Cuyahoga River, Peninsula, Ohio, Sept. 16, 2025. The Fatmucket mussels were processed by attaching tiny numbered tags and P.I.T. (Passive Integrated Transponders), to monitor their movement and growth then placed within shallow divots in the river. (U.S. Army photo by Andre' M. Hampton)

A Fatmucket mussel is tagged with a numbered tag used to track its movement and growth.

The USACE Buffalo District working in collaboration with the National Park Service, U.S. Fish and Wildlife Service, Cleveland State University, Edge Engineering & Science, and the Ohio Department of Natural Resources help tag Fatmucket mussels that will be placed in the Cuyahoga River to aid their restoration, Cleveland, Ohio, Sept. 15, 2025. Approximately 670 Fatmucket mussels will be processed by attaching tiny numbered tags and P.I.T. (Passive Integrated Transponders), similar to the chips used to track pets, to monitor their movement and growth. (U.S. Army photo by Andre' M. Hampton)

Larger Fatmucket mussels are kept submerged in water during the mussel reintroduction project.

The USACE Buffalo District working in collaboration with the National Park Service, U.S. Fish and Wildlife Service, Cleveland State University, Edge Engineering & Science, and the Ohio Department of Natural Resources help tag Fatmucket mussels that will be placed in the Cuyahoga River to aid their restoration, Cleveland, Ohio, Sept. 15, 2025. Approximately 670 Fatmucket mussels will be processed by attaching tiny numbered tags and P.I.T. (Passive Integrated Transponders), similar to the chips used to track pets, to monitor their movement and growth. (U.S. Army photo by Andre' M. Hampton)

Partnering agencies gather for a group photo during the mussel reintroduction project.

The U.S. Army Corps of Engineers, Buffalo District worked in collaboration with partnering agencies to help mussel restoration and reintroduction in the Cuyahoga River, Peninsula, Ohio, Sept. 16, 2025. The Fatmucket mussels were processed by attaching tiny numbered tags and P.I.T. (Passive Integrated Transponders), to monitor their movement and growth then placed within shallow divots in the river. (U.S. Army photo by Andre' M. Hampton)

CLEVELAND — A multi-agency team took a hands-on approach to boosting native mussel populations in the Cuyahoga River this fall, marking a new chapter in efforts to restore the health of one of Ohio’s most iconic waterways.

Scientists and specialists from the U.S. Army Corps of Engineers Buffalo District worked alongside the National Park Service, U.S. Fish and Wildlife Service, Ohio Department of Natural Resources, Cleveland Metroparks, Northeast Ohio Regional Sewer District, Cleveland State University and Edge Engineering & Science to reintroduce hundreds of freshwater mussels into the river.

The project centered on roughly 670 Fatmucket mussels, each outfitted with tiny, numbered tags and P.I.T. (passive integrated transponder) chips — the same type of microchips used to track household pets. The tags allowed researchers to monitor the mussels’ movement, growth and overall health as they settled into their new environment.

Working together in a science laboratory at Cleveland State University, the team spent long hours tagging the 670 mussels in preparation for placing them at strategic locations throughout Cuyahoga Valley National Park in Peninsula, Ohio.

Freshwater mussels have been found in the Cuyahoga River for hundreds of years, but industrial growth, dams and pollution sharply reduced their numbers. Their reappearance in the early 2000s followed significant improvements in water quality.

Placing the mussels was a delicate task. Researchers made a tiny divot in the riverbed — no bigger than a fingertip — and set each mussel in place with its foot down and siphon facing up. That orientation helped the mussel anchor itself and begin filtering water, an essential step that improved water quality and stabilized river sediment.

Experts believe the return of these globally imperiled species could have an outsized impact. Healthy mussel communities support cleaner water, provide habitat for other organisms and strengthen the overall functioning of the river ecosystem.

The long-term goal is to re-establish a thriving freshwater mussel community in the lower Cuyahoga River within Cuyahoga Valley National Park. USACE and the National Park Service said the project aligns with their broader mission to restore and enhance the river’s ecosystem for future generations.

 

 

The Buffalo District delivers world-class engineering solutions to the Great Lakes Region, the Army and the Nation to ensure national security, environmental sustainability, water resource management, and emergency assistance during peace and war.

For 250 years, the U.S. Army Corps of Engineers has been at the forefront of the nation’s engineering excellence, responding when called. From constructing fortifications during the Revolutionary War, to building the infrastructure that saw America’s strength grow militarily and economically, USACE’s mission has always been to deliver engineering solutions for our nation’s toughest challenges. Learn more at www.usace.army.mil/Home/250th.

This article was written with assistance from artificial intelligence.