Wanderlust World Wanderlust World Detroit's name comes from the French détroit—meaning "strait" or "narrow passage"—referring to the Detroit River connecting Lake St. Clair and Lake Erie.
In 1701, French officer Antoine de la Mothe Cadillac established Fort Pontchartrain du Détroit on the river's north bank. The site controlled the critical choke point between the upper and lower Great Lakes—a strategic fur trade and military corridor. The settlement that grew around the fort inherited the river's name.
The Detroit River is technically a strait: a narrow waterway (0.5–2.5 miles wide) linking two larger bodies of water. It flows 28 miles, drops only 3 feet in elevation, and carries the combined outflow of Lakes Superior, Michigan, and Huron into Lake Erie. The current is swift—up to 4 knots—impressing early French explorers.
British took control in 1760 (dropping "Fort Pontchartrain"). Americans took it in 1796 (Jay Treaty). The name "Detroit" stuck through each transition. Michigan Territory (1805), statehood (1837)—the strait remained the region's geographic and economic anchor.
Unlike most major U.S. cities (Washington, Columbus, Houston, Cleveland), Detroit is named for a geographic feature, not a founder, politician, or investor. The river made the city possible; the city took the river's name.