Saint Marys River
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Saint Mar·ys River(mâr′ēz)
1. A river, about 210 km (130 mi) long, rising in southeast Georgia in the Okefenokee Swamp and flowing eastward along the Georgia-Florida border to the Atlantic Ocean.
2. A river, about 120 km (75 mi) long, flowing from Lake Superior to Lake Huron and forming part of the US-Canadian border.