St. Clair River

The St. Clair River (Rivière Sainte-Claire) is a 40.5mi river in central North America which drains Lake Huron into Lake St. Clair, forming part of the international boundary between the Canadian province of Ontario and the U.S. state of Michigan. The river is a significant component in the Great Lakes Waterway, with shipping channels permitting cargo vessels to travel between the upper and lower Great Lakes.LocationThe river, which some consider a strait, flows in a southerly direction, connecting the southern end of Lake Huron to the northern end of Lake St. Clair. It branches into several channels near its mouth at Lake St. Clair, creating a broad delta region known as the St. Clair Flats.SizeThe river is long and drops 5ft in elevation from Lake Huron to Lake St. Clair. The flow rate averages around 182,000cuft/s, and the drainage area is 223600sqmi. This takes into account the combined drainage areas of Lakes Huron, Michigan, and Superior.