Question: what's the largest manmade lake in the us
Answer: erior Michigan - Minnesota - Wisconsin - Ontario 31,700 sq mi 82,103 km Lake Huron Michigan - Ontario 23,000 sq mi 59,570 km Lake Michigan Illinois - Indiana - Michigan - Wisconsin 22,300 sq mi 57,757 km Lake Erie Michigan - New York - Ohio - Ontario - Pennsylvania 9,910 sq mi 25,667 km Lake Ontario New York - Ontario 7,340 sq mi 19,011 km 6 Great Salt Lake ( salt ) Utah 2,117 sq mi 5,483 km 7 Lake of the Woods Manitoba - Minnesota - Ontario 1,679 sq mi 4,349 km 8 Iliamna Lake Alaska 1,014 sq mi 2,626 km 9 Lake Oahe ( man - made ) North Dakota - South Dakota 685 sq mi 1,774 km 10 Lake Okeechobee Florida 662 sq mi 1,715 km 11 Lake Pontchartrain ( salt ) Louisiana 631 sq mi 1,634 km 12 Lake Sakakawea ( man - made ) North Dakota 520 sq mi 1,347 km 13 Lake Champlain New York - Vermont - Quebec 490 sq mi 1,269 km 14 Becharof Lake Alaska 453 sq mi 1,173 km 15 Lake St.