<P> The following is a list of the largest 100 lakes of the United States by normal surface area . The top twenty lakes in size are as listed by the National Atlas of the United States, a publication of the United States Department of the Interior . The area given is the normal or average area of the lake . The area of some lakes fluctuates substantially . For those lakes partially in Canada or Mexico the area given for the lake is the total area, not just the part of the lake in the United States . Of the top 100 lakes, 55 are man - made and 45 are natural . Three lakes in the top 100 are primarily salt water . </P> <Table> <Tr> <Th> Rank </Th> <Th> Name </Th> <Th> U.S. states / Canadian provinces / Mexican states </Th> <Th_colspan="2"> Area </Th> <Th> Type </Th> <Th> Notes </Th> </Tr> <Tr> <Td> </Td> <Td> Lake Superior </Td> <Td> Michigan - Minnesota - Wisconsin - Ontario </Td> <Td> 31,700 sq mi </Td> <Td> 82,103 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> Lake Huron </Td> <Td> Michigan - Ontario </Td> <Td> 23,000 sq mi </Td> <Td> 59,570 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> Lake Michigan </Td> <Td> Illinois - Indiana - Michigan - Wisconsin </Td> <Td> 22,300 sq mi </Td> <Td> 57,757 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> Lake Erie </Td> <Td> Michigan - New York - Ohio - Ontario - Pennsylvania </Td> <Td> 9,910 sq mi </Td> <Td> 25,667 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> Lake Ontario </Td> <Td> New York - Ontario </Td> <Td> 7,340 sq mi </Td> <Td> 19,011 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 6 </Td> <Td> Great Salt Lake </Td> <Td> Utah </Td> <Td> 2,117 sq mi </Td> <Td> 5,483 km </Td> <Td> natural </Td> <Td> salt </Td> </Tr> <Tr> <Td> 7 </Td> <Td> Lake of the Woods </Td> <Td> Manitoba - Minnesota - Ontario </Td> <Td> 1,679 sq mi </Td> <Td> 4,349 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 8 </Td> <Td> Iliamna Lake </Td> <Td> Alaska </Td> <Td> 1,014 sq mi </Td> <Td> 2,626 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 9 </Td> <Td> Lake Oahe </Td> <Td> North Dakota - South Dakota </Td> <Td> 685 sq mi </Td> <Td> 1,774 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 10 </Td> <Td> Lake Okeechobee </Td> <Td> Florida </Td> <Td> 662 sq mi </Td> <Td> 1,715 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 11 </Td> <Td> Lake Pontchartrain </Td> <Td> Louisiana </Td> <Td> 631 sq mi </Td> <Td> 1,634 km </Td> <Td> natural </Td> <Td> salt </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Lake Sakakawea </Td> <Td> North Dakota </Td> <Td> 520 sq mi </Td> <Td> 1,347 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 13 </Td> <Td> Lake Champlain </Td> <Td> New York - Vermont - Quebec </Td> <Td> 490 sq mi </Td> <Td> 1,269 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Becharof Lake </Td> <Td> Alaska </Td> <Td> 453 sq mi </Td> <Td> 1,173 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 15 </Td> <Td> Lake St. Clair </Td> <Td> Michigan - Ontario </Td> <Td> 440 sq mi </Td> <Td> 1,140 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 16 </Td> <Td> Red Lake </Td> <Td> Minnesota </Td> <Td> 427 sq mi </Td> <Td> 1,106 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 17 </Td> <Td> Selawik Lake </Td> <Td> Alaska </Td> <Td> 404 sq mi </Td> <Td> 1,046 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 18 </Td> <Td> Fort Peck Lake </Td> <Td> Montana </Td> <Td> 393 sq mi </Td> <Td> 1,018 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 19 </Td> <Td> Salton Sea </Td> <Td> California </Td> <Td> 347 sq mi </Td> <Td> 899 km </Td> <Td> man - made </Td> <Td> salt </Td> </Tr> <Tr> <Td> 20 </Td> <Td> Rainy Lake </Td> <Td> Minnesota - Ontario </Td> <Td> 345 sq mi </Td> <Td> 894 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 21 </Td> <Td> Devils Lake </Td> <Td> North Dakota </Td> <Td> 300.0 sq mi </Td> <Td> 777 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 22 </Td> <Td> Toledo Bend Reservoir </Td> <Td> Louisiana - Texas </Td> <Td> 284 sq mi </Td> <Td> 736 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 23 </Td> <Td> Lake Powell </Td> <Td> Arizona - Utah </Td> <Td> 251 sq mi </Td> <Td> 650 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 24 </Td> <Td> Kentucky Lake </Td> <Td> Kentucky - Tennessee </Td> <Td> 250 sq mi </Td> <Td> 647 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 25 </Td> <Td> Lake Mead </Td> <Td> Arizona - Nevada </Td> <Td> 247 sq mi </Td> <Td> 640 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 26 </Td> <Td> Naknek Lake </Td> <Td> Alaska </Td> <Td> 242 sq mi </Td> <Td> 627 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 27 </Td> <Td> Lake Winnebago </Td> <Td> Wisconsin </Td> <Td> 215 sq mi </Td> <Td> 557 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 28 </Td> <Td> Mille Lacs Lake </Td> <Td> Minnesota </Td> <Td> 207 sq mi </Td> <Td> 536 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 29 </Td> <Td> Flathead Lake </Td> <Td> Montana </Td> <Td> 192 sq mi </Td> <Td> 497 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 30 </Td> <Td> Lake Tahoe </Td> <Td> California - Nevada </Td> <Td> 191 sq mi </Td> <Td> 495 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 31 </Td> <Td> Pyramid Lake </Td> <Td> Nevada </Td> <Td> 183 sq mi </Td> <Td> 474 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 32 </Td> <Td> Sam Rayburn Reservoir </Td> <Td> Texas </Td> <Td> 179 sq mi </Td> <Td> 464 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 33 </Td> <Td> Eufaula Lake </Td> <Td> Oklahoma </Td> <Td> 169 sq mi </Td> <Td> 438 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 34 </Td> <Td> Lake Marion </Td> <Td> South Carolina </Td> <Td> 165 sq mi </Td> <Td> 427 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 35 </Td> <Td> Leech Lake </Td> <Td> Minnesota </Td> <Td> 161 sq mi </Td> <Td> 417 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 36 </Td> <Td> Utah Lake </Td> <Td> Utah </Td> <Td> 151 sq mi </Td> <Td> 391 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 37 </Td> <Td> Lake Francis Case </Td> <Td> South Dakota </Td> <Td> 149 sq mi </Td> <Td> 386 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 38 </Td> <Td> Lake Pend Oreille </Td> <Td> Idaho </Td> <Td> 148 sq mi </Td> <Td> 383 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 39 </Td> <Td> Lake Texoma </Td> <Td> Oklahoma - Texas </Td> <Td> 139 sq mi </Td> <Td> 360 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 40 </Td> <Td> Yellowstone Lake </Td> <Td> Wyoming </Td> <Td> 136 sq mi </Td> <Td> 352 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 41 </Td> <Td> Falcon Lake </Td> <Td> Tamaulipas - Texas </Td> <Td> 131 sq mi </Td> <Td> 339 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 42 </Td> <Td> Lake Livingston </Td> <Td> Texas </Td> <Td> 130 sq mi </Td> <Td> 337 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 43 </Td> <Td> Lake Roosevelt </Td> <Td> Washington </Td> <Td> 128 sq mi </Td> <Td> 332 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 44 </Td> <Td> Lake Clark </Td> <Td> Alaska </Td> <Td> 120 sq mi </Td> <Td> 311 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 45 </Td> <Td> Moosehead Lake </Td> <Td> Maine </Td> <Td> 117 sq mi </Td> <Td> 303 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 46 </Td> <Td> Lake Strom Thurmond </Td> <Td> Georgia - South Carolina </Td> <Td> 111 sq mi </Td> <Td> 287 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 47 </Td> <Td> Bear Lake </Td> <Td> Idaho - Utah </Td> <Td> 109 sq mi </Td> <Td> 282 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 48 </Td> <Td> Lake Guntersville </Td> <Td> Alabama </Td> <Td> 108 sq mi </Td> <Td> 280 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 49 </Td> <Td> Lake St. Francis </Td> <Td> New York - Ontario - Quebec </Td> <Td> 105 sq mi </Td> <Td> 272 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 50 </Td> <Td> Wheeler Lake </Td> <Td> Alabama </Td> <Td> 105 sq mi </Td> <Td> 272 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 51 </Td> <Td> Amistad Lake </Td> <Td> Coahuila - Texas </Td> <Td> 102 sq mi </Td> <Td> 264 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 52 </Td> <Td> Klamath Lake </Td> <Td> Oregon </Td> <Td> 96 sq mi </Td> <Td> 249 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 53 </Td> <Td> Lake Moultrie </Td> <Td> South Carolina </Td> <Td> 94 sq mi </Td> <Td> 243 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 54 </Td> <Td> Lake Winnibigoshish </Td> <Td> Minnesota </Td> <Td> 91 sq mi </Td> <Td> 236 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 55 </Td> <Td> Lake Barkley </Td> <Td> Kentucky - Tennessee </Td> <Td> 91 sq mi </Td> <Td> 236 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 56 </Td> <Td> Lake Sharpe </Td> <Td> South Dakota </Td> <Td> 89 sq mi </Td> <Td> 231 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 57 </Td> <Td> American Falls Reservoir </Td> <Td> Idaho </Td> <Td> 88 sq mi </Td> <Td> 228 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 58 </Td> <Td> Lake Hartwell </Td> <Td> Georgia - South Carolina </Td> <Td> 87 sq mi </Td> <Td> 225 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 59 </Td> <Td> Truman Reservoir </Td> <Td> Missouri </Td> <Td> 87 sq mi </Td> <Td> 225 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 60 </Td> <Td> Lake of the Ozarks </Td> <Td> Missouri </Td> <Td> 86 sq mi </Td> <Td> 223 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 61 </Td> <Td> Oneida Lake </Td> <Td> New York </Td> <Td> 80 sq mi </Td> <Td> 207 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 62 </Td> <Td> Lake Cumberland </Td> <Td> Kentucky </Td> <Td> 79 sq mi </Td> <Td> 205 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 63 </Td> <Td> Kerr Lake </Td> <Td> North Carolina - Virginia </Td> <Td> 78 sq mi </Td> <Td> 202 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 64 </Td> <Td> Calcasieu Lake </Td> <Td> Louisiana </Td> <Td> 77 sq mi </Td> <Td> 199 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 65 </Td> <Td> Lake Murray </Td> <Td> South Carolina </Td> <Td> 75 sq mi </Td> <Td> 194 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 66 </Td> <Td> Grand Lake o' the Cherokees </Td> <Td> Oklahoma </Td> <Td> 73 sq mi </Td> <Td> 189 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 67 </Td> <Td> Lake Winnipesaukee </Td> <Td> New Hampshire </Td> <Td> 71 sq mi </Td> <Td> 184 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 68 </Td> <Td> Bull Shoals Lake </Td> <Td> Arkansas - Missouri </Td> <Td> 71 sq mi </Td> <Td> 184 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 69 </Td> <Td> Walter F. George Lake </Td> <Td> Alabama - Georgia </Td> <Td> 71 sq mi </Td> <Td> 184 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 70 </Td> <Td> Lake Martin </Td> <Td> Alabama </Td> <Td> 69 sq mi </Td> <Td> 179 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 71 </Td> <Td> Clear Lake </Td> <Td> California </Td> <Td> 68 sq mi </Td> <Td> 176 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 72 </Td> <Td> Robert S. Kerr Lake </Td> <Td> Oklahoma </Td> <Td> 68 sq mi </Td> <Td> 176 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 73 </Td> <Td> Seneca Lake </Td> <Td> New York </Td> <Td> 68 sq mi </Td> <Td> 176 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 74 </Td> <Td> Pickwick Lake </Td> <Td> Alabama - Mississippi </Td> <Td> 67 sq mi </Td> <Td> 174 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 75 </Td> <Td> Table Rock Lake </Td> <Td> Arkansas - Missouri </Td> <Td> 67 sq mi </Td> <Td> 174 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 76 </Td> <Td> Cayuga Lake </Td> <Td> New York </Td> <Td> 67 sq mi </Td> <Td> 174 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 77 </Td> <Td> Flaming Gorge Reservoir </Td> <Td> Utah - Wyoming </Td> <Td> 66 sq mi </Td> <Td> 171 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 78 </Td> <Td> Lake Vermilion </Td> <Td> Minnesota </Td> <Td> 63 sq mi </Td> <Td> 163 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 79 </Td> <Td> Lake Ouachita </Td> <Td> Arkansas </Td> <Td> 63 sq mi </Td> <Td> 163 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 80 </Td> <Td> Lake Mattamuskeet </Td> <Td> North Carolina </Td> <Td> 63 sq mi </Td> <Td> 163 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 81 </Td> <Td> Watts Bar Lake </Td> <Td> Tennessee </Td> <Td> 61 sq mi </Td> <Td> 158 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 82 </Td> <Td> Lake Wallula </Td> <Td> Oregon - Washington </Td> <Td> 61 sq mi </Td> <Td> 158 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 83 </Td> <Td> Lake Lanier </Td> <Td> Georgia </Td> <Td> 59 sq mi </Td> <Td> 153 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 84 </Td> <Td> Lake Seminole </Td> <Td> Florida - Georgia </Td> <Td> 58 sq mi </Td> <Td> 150 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 85 </Td> <Td> Lake Tawakoni </Td> <Td> Texas </Td> <Td> 57 sq mi </Td> <Td> 148 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 86 </Td> <Td> Elephant Butte Lake </Td> <Td> New Mexico </Td> <Td> 57 sq mi </Td> <Td> 148 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 87 </Td> <Td> Chickamauga Lake </Td> <Td> Tennessee </Td> <Td> 57 sq mi </Td> <Td> 148 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 88 </Td> <Td> Grenada Lake </Td> <Td> Mississippi </Td> <Td> 55 sq mi </Td> <Td> 142 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 89 </Td> <Td> Lake Kissimmee </Td> <Td> Florida </Td> <Td> 55 sq mi </Td> <Td> 142 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 90 </Td> <Td> Lake Dardanelle </Td> <Td> Arkansas </Td> <Td> 54 sq mi </Td> <Td> 140 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 91 </Td> <Td> Norris Lake </Td> <Td> Tennessee </Td> <Td> 53 sq mi </Td> <Td> 137 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 92 </Td> <Td> Canyon Ferry Lake </Td> <Td> Montana </Td> <Td> 53 sq mi </Td> <Td> 137 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 93 </Td> <Td> Lake Chelan </Td> <Td> Washington </Td> <Td> 52 sq mi </Td> <Td> 135 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 94 </Td> <Td> Cedar Creek Lake </Td> <Td> Texas </Td> <Td> 51 sq mi </Td> <Td> 132 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 95 </Td> <Td> Lake Norman </Td> <Td> North Carolina </Td> <Td> 51 sq mi </Td> <Td> 132 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 96 </Td> <Td> Sardis Lake </Td> <Td> Mississippi </Td> <Td> 51 sq mi </Td> <Td> 132 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 97 </Td> <Td> Walker Lake (Nevada) </Td> <Td> Nevada </Td> <Td> 50 sq mi </Td> <Td> 129 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 98 </Td> <Td> Lake McConaughy </Td> <Td> Nebraska </Td> <Td> 56 sq mi </Td> <Td> 145 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> <Tr> <Td> 99 </Td> <Td> Lake George </Td> <Td> New York </Td> <Td> 56 sq mi </Td> <Td> 145 km </Td> <Td> natural </Td> <Td> </Td> </Tr> <Tr> <Td> 100 </Td> <Td> Beaver Lake </Td> <Td> Arkansas </Td> <Td> 44.06 sq mi </Td> <Td> 114 km </Td> <Td> man - made </Td> <Td> </Td> </Tr> </Table> <Tr> <Th> Rank </Th> <Th> Name </Th> <Th> U.S. states / Canadian provinces / Mexican states </Th> <Th_colspan="2"> Area </Th> <Th> Type </Th> <Th> Notes </Th> </Tr>

What is the largest lake in the western united states
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