St. Marys River (Michigan–Ontario) St. Marys River (Michigan–Ontario) The St. Marys River (), sometimes written as the St. Mary's River, drains Lake Superior, starting at the end of Whitefish Bay and flowing southeast into Lake Huron, with a fall of . For its entire length it is an international border, separating Michigan in the United States from Ontario, Canada. The twin cities of Sault Ste. Marie, Ontario, and Sault Ste. Marie, Michigan are connected across the St. Marys River by the Sault Ste. Marie International Bridge. The St. Marys Rapids are just below the river's exit from Lake Superior and can be bypassed by
Sault Ste. Marie, Michigan of Cedar. Mount Pleasant PBS affiliate WCMU-TV serves the Cadillac-Traverse City market via Cadillac satellite station WCMV, but its signal does not normally reach the Sault Ste. Marie area. None of these stations are seen on cable in Sault Ste. Marie, Ontario, as Shaw Cable chooses to largely air Detroit affiliates for over the air channels, while WUHF in Rochester, New York, WPIX in New York City, New York, and WSBK-TV in Boston, Massachusetts provide the closest Fox, CW, and MNTV affiliates carried by Shaw in the market. Other stations serving the Sault Ste. Marie, Michigan, market: The city's main