Lake Michigan Basin Statistics
- Length: 307 mi / 494 km
- Breadth: 118 mi / 190 km
- Elevation: 577.5 ft / 176 m
- Depth: 279 ft / 85 m average, 923 ft / 281 m maximum
- Volume: 1,180 cubic mi / 4,918 cubic km
- Water Surface Area: 22,300 square mi / 57,753 square km
- Drainage Basin Area: 45,600 square mi / 118,095 square km
- Shoreline Length: 1,640 mi / 2,639 km (including islands)
- Outlet: Straits of Mackinac to Lake Huron
- Retention / Replacement Time: 62 years
- Population: ~12,052,743*
* Includes metropolitan Chicago, which is not part of the drainage basin, but uses Lake Michigan for drinking water.
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