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Restoring St. Clair River AOC (timeline)

Year Critical Actions

Sixth and seventh beneficial use impairment removed.

  • Beach closings
  • Bird or animal deformities or reproduction problems
2017 MDEQ St. Clair AOC Bird or Animal Deformities or Reproductive Problems BUI Removal Documentation Exit

Habitat Restoration Fact Sheet

MDEQ St. Clair River Beach Closings BUI Removal Recommendation Exit


The fifth beneficial use impairment is removed.

  • Degradation of benthos


A progress report is released summarizing improvements made in the AOC.

The Marysville “Living Shoreline” project is completed. The more natural shoreline that was constructed will greatly improve fish and wildlife habitat.


Two more beneficial use impairments are removed.

  • Tainting of fish and wildlife flavor
  • Degradation of aesthetics


The second beneficial use impairment is removed.

  • Added costs to agriculture or industry


MDEQ (MDNRE at the time) releases an updated BUI Restoration guide for each of the BUIs in the Michigan Areas of Concern.


The first beneficial use impairment is removed.

  • Restriction on dredging activities


An update to the Remedial Action Plan is published.

MDEQ issues updated Guidance for Delisting Michigan’s Great Lakes Areas of Concern.


A report is released regarding the water quality of the Michigan AOC connecting channels between the United States and Canada.


Wetlands are developed on the ICI Phosphate site near Corruna, Ontario to treat wastewater prior before it is discharged into the river. Work on this site is part of a long-term restoration plan.

A 50-acre naturalization project is completed on Terra Industries property, adjacent to the St. Clair River. The project included tree planting and restoration of tall grass prairie and wetlands.

Macomb and St. Clair Counties receive a $1 million dollar federal earmark to establish water quality monitoring for Lake St. Clair and St. Clair River.


The City of Sarnia completes $30 million in sewage treatment upgrades.

St. Clair township also undertakes improvements in wastewater infrastructure.


Stage I of the Remedial Action Plan is published.

MDEQ (MDNRE at the time) releases an updated BUI Restoration guide for each of the BUIs in the Michigan Areas of Concern.