description St. Clair River Delta Overview
The St. Clair River Delta, also called the St. Clair Flats, is a freshwater bird-foot delta where the St. Clair River enters Lake St.
Clair between Michigan and Ontario. Its channels, islands, cattail marshes, and shallow waters form part of the connecting-waterway system between Lake Huron and Lake Erie. The delta and surrounding wetlands provide spawning and nursery habitat for fish and staging and feeding areas for migratory waterfowl, including tundra swans and ducks.
help St. Clair River Delta FAQ
Where is the St. Clair River Delta located?
The delta lies at the mouth of the St. Clair River, where it flows into Lake St. Clair. It straddles the United States-Canada border.
Is the St. Clair River Delta freshwater or marine?
It is a massive freshwater delta because it flows into Lake St. Clair rather than directly into an ocean. Its channels and marshes form part of the Great Lakes water system.
Why are the marshes in the St. Clair River Delta important?
The extensive marshes provide habitat for migratory birds. The delta's position between the United States and Canada makes it an important cross-border Great Lakes wetland.
Which lake receives the St. Clair River Delta?
The delta flows into Lake St. Clair. This lake receives the St. Clair River before water continues through the Great Lakes system.
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