United States

• Lewis Lake: a lake in Sumter Township, McLeod County, Minnesota
• Lewis Lake, Massachusetts: located in Winthrop, Massachusetts
  Winthrop, Massachusetts
  The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...
  
  
• Lewis Lake, Minnesota
  Lewis Lake, Minnesota
  Lewis Lake is an unincorporated community in Kanabec County, Minnesota, United States. The community is located between Braham and Ogilvie. In 1977, the Minnesota Department of Transportation estimated the population of Lewis Lake as 20 people....
  
  : an unincorporated community in Kanabec County, Minnesota
• Lewis Lake (Wyoming)
  Lewis Lake (Wyoming)
  Lewis Lake is located in the U. S. state of Wyoming in the southern part of Yellowstone National Park, about southeast of Shoshone Lake, and approximately southwest of Yellowstone Lake. Lewis Lake and Shoshone Lake are both located a few miles northeast of the Pitchstone Plateau.The Lewis River...
  
  : a lake in Yellowstone National Park
• Lake Lewis
  Lake Lewis
  Lake Lewis was a temporary lake in the Pacific Northwest region of North America, largely formed by the Missoula Floods in about the 14th millennium B.C....
  
  : a temporary lake created by the Missoula Floods
  Missoula Floods
  The Missoula Floods refer to the cataclysmic floods that swept periodically across eastern Washington and down the Columbia River Gorge at the end of the last ice age. The glacial flood events have been researched since the 1920s...