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Public comment period for proposed maintenance activities at the Clinton River mouth, Macomb County
The Department of Environment, Great Lakes, and Energy (EGLE) has received a water quality certification request pursuant to Section 401 of the Clean Water Act and a Federal Consistency Determination under Section 307 of the Federal Coastal Zone Management Act (CZMA) from the U.S. Army Corps of Engineers (USACE), Detroit District, regarding proposed in-kind and in-place maintenance of the north breakwater at the Clinton River mouth in Lake St. Clair, Harrison Township, Macomb County. USACE will reset or place approximately 600 cubic yards of one- to two-ton armor stone along the breakwater to reposition or replenish previously placed stone that has settled, and to reconstruct the eastern end of the breakwater protecting the navigation marker.
The repositioning and addition of the armor stone will not increase the project footprint. Up to 500 cubic yards of shoal material may be dredged to allow the barge to access the breakwater. All dredged material will be placed in the East Dickinson Island Confined Disposal Facility. The activities will be conducted from the water by the USACE floating plant. EGLE is reviewing the proposed activity for compliance with Michigan’s water quality requirements pursuant to Section 401 of the CWA and consistency with Michigan’s Coastal Management Program pursuant to Section 307 of the CZMA.
Written comments must be submitted by 5:00 p.m. August 12, 2026, to:
- Icons.Email Matt Smar at SmarM@Michigan.gov or
- Icons.Edit EGLE, Water Resources Division, P.O. Box 30458, Lansing, Michigan, 48909-7958.
All comments will be provided to the USACE.
About certification under Section 401 of the federal Clean Water Act
Under Section 401 of the federal Clean Water Act, EGLE reviews federal permit and license applications for projects that may result in a discharge to Michigan’s waters of the United States. The purpose of the review is to determine whether EGLE can certify that the project will comply with Michigan’s water quality requirements.
The federal agency cannot issue the permit or license unless EGLE either grants or waives water quality certification. EGLE may require special certification conditions that the federal agency must incorporate into the permit or license. The federal agency cannot issue the permit or license if EGLE denies water quality certification for the project.
About certification under Section 307 of the federal Coastal Zone Management Act
Under Section 307 of the federal Coastal Zone Management Act, EGLE reviews federal agency activities within Michigan’s Coastal Zone Boundary that may impact coastal resources and uses. The purpose of the review is to determine whether the proposed activity complies with a range of Michigan’s resource protection statutes and rules.
Start: July 15, 2026 8:00 AM
End: August 12, 2026 11:30 PM
The Department of Environment, Great Lakes, and Energy (EGLE) has received a water quality certification request pursuant to Section 401 of the Clean Water Act and a Federal Consistency Determination under Section 307 of the Federal Coastal Zone Management Act (CZMA) from the U.S. Army Corps of Engineers (USACE), Detroit District, regarding proposed in-kind and in-place maintenance of the north breakwater at the Clinton River mouth in Lake St. Clair, Harrison Township, Macomb County. USACE will reset or place approximately 600 cubic yards of one- to two-ton armor stone along the breakwater to reposition or replenish previously placed stone that has settled, and to reconstruct the eastern end of the breakwater protecting the navigation marker.
The repositioning and addition of the armor stone will not increase the project footprint. Up to 500 cubic yards of shoal material may be dredged to allow the barge to access the breakwater. All dredged material will be placed in the East Dickinson Island Confined Disposal Facility. The activities will be conducted from the water by the USACE floating plant. EGLE is reviewing the proposed activity for compliance with Michigan’s water quality requirements pursuant to Section 401 of the CWA and consistency with Michigan’s Coastal Management Program pursuant to Section 307 of the CZMA.
Written comments must be submitted by 5:00 p.m. August 12, 2026, to:
- Matt Smar at SmarM@Michigan.gov or
- EGLE, Water Resources Division, P.O. Box 30458, Lansing, Michigan, 48909-7958.
All comments will be provided to the USACE.
About certification under Section 401 of the federal Clean Water Act
Under Section 401 of the federal Clean Water Act, EGLE reviews federal permit and license applications for projects that may result in a discharge to Michigan’s waters of the United States. The purpose of the review is to determine whether EGLE can certify that the project will comply with Michigan’s water quality requirements.
The federal agency cannot issue the permit or license unless EGLE either grants or waives water quality certification. EGLE may require special certification conditions that the federal agency must incorporate into the permit or license. The federal agency cannot issue the permit or license if EGLE denies water quality certification for the project.
About certification under Section 307 of the federal Coastal Zone Management Act
Under Section 307 of the federal Coastal Zone Management Act, EGLE reviews federal agency activities within Michigan’s Coastal Zone Boundary that may impact coastal resources and uses. The purpose of the review is to determine whether the proposed activity complies with a range of Michigan’s resource protection statutes and rules.
Learn more about requirements under Section 401