Length - 350 mi/563 km

Breadth -160 mi/259 km

Depth - 489 ft/149 m avg./1,335 ft/407 m max.

Volume - 2,934 mi3/12,230 km³

Water Surface Area - 31,700 mi2/82,100 km²

Drainage Basin Area - 49,300 mi2/127,700 km²

Shoreline Length (including islands) - 2,726 mi/4,385 km

Retention/Replacement Time - 191 years

Elevation - 600 ft/183 m

Outlet - St. Mary's River to Lake Huron

Population - 474,150 (U.S.)/155,675 (Canada)