Two Supreme Court cases, Wisconsin v. Michigan, 295 U.S. 455 (1935) and Wisconsin v. Michigan, 297 U.S. 547 (1936), settled a border dispute between Wisconsin

Wisconsin

Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

 and Michigan

Michigan

Michigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....

. A third, Michigan v. Wisconsin, ...

Lake Superior to Lac Vieux Desert

An original description of the portion of the Wisconsin-Michigan boundary in 1838 was based on inaccurate maps. ...

The Green Bay Channel and Island

The 1836 boundary description described the line through northwest Lake Michigan

Lake Michigan

Lake Michigan is one of the five Great Lakes of North America and the only one located entirely within the United States. It is the second largest of the Great Lakes by volume and the third largest by surface area, after Lake Superior and Lake Huron...

 as “the most usual ship channel”. This description needed clarification as two routes were in use. A 1926 Supreme Court decision chose the northernmost ship channel, in which Michigan lost the intervening water area and four islands: Plum

Plum Island (Wisconsin)

Plum Island is an island at the western shore of Lake Michigan in the southern part of the town of Washington in Door County, Wisconsin, USA. The uninhabited island has a land area of 1.179 km² or 117.87 ha . The island is a bird sanctuary under control of the U.S. Coast Guard and will eventually...

, Detroit, Washington

Washington Island (Wisconsin)

Washington Island is located about 7 miles northeast of the tip of Door Peninsula in Door County, Wisconsin. The island has a year-round population of 660 people . It has a land area of 60.89 km² and comprises over 92 percent of the land area of the town of Washington, as well as all of its...

, and Rock

Rock Island (Wisconsin)

Rock Island is a wooded island off the tip of Wisconsin's Door Peninsula at the mouth of Green Bay. The uninhabited island is almost entirely owned by the Wisconsin DNR, which maintains Rock Island State Park. It is the northernmost part of the Town of Washington.-History:Rock Island was...

.

See also

• Toledo War
  Toledo War
  The Toledo War , also known as the Michigan-Ohio War, was the almost entirely bloodless boundary dispute between the U.S. state of Ohio and the adjoining territory of Michigan....
  
  
• Iron County, Michigan
  Iron County, Michigan
  -Demographics:As of the census of 2000, there were 13,138 people, 5,748 households, and 3,615 families residing in the county. The population density was 11 people per square mile . There were 8,772 housing units at an average density of 8 per square mile...
  
  
• Gogebic County, Michigan
  Gogebic County, Michigan
  -Demographics:As of the census of 2000, there were 17,370 people, 7,425 households, and 4,581 families residing in the county. The population density was 16 people per square mile . There were 10,839 housing units at an average density of 10 per square mile...
  
  
• Vilas County, Wisconsin
  Vilas County, Wisconsin
  Vilas County is a county in the U.S. state of Wisconsin. As of 2000, the population was 21,033. Its county seat is Eagle River.-Settlement:Vilas County was set off from Oneida County on April 12, 1893 and named for William Freeman Vilas...
  
  
• Hurley, Wisconsin
  Hurley, Wisconsin
  Hurley is a city in and the county seat of Iron County, Wisconsin, United States. The population was 1,818 at the 2000 census. It is directly across the Montreal River from Ironwood, Michigan.-History:...
  
  
• Lac Vieux Desert
  Lac Vieux Desert
  Lac Vieux Desert is a lake in the United States divided between Gogebic County, Michigan, and Vilas County, Wisconsin. Fed primarily by springs in the surrounding swamps, it is the source of the Wisconsin River, which flows out of its southwest corner...
  
  
• Montreal River
  Montreal River (Wisconsin-Michigan)
  The Montreal River is a river flowing to Lake Superior in northern Wisconsin and the Upper Peninsula of Michigan in the United States. It is approximately 40 miles long and drains approximately 270 square miles in a forested region. For most of its length, the river's course is used to define a...
  
  
• Menominee River
  Menominee River
  The Menominee River is a river in northwestern Michigan and northeastern Wisconsin in the United States. It is approximately 118 mi , draining a rural forested area of northern Wisconsin and the Upper Peninsula of Michigan into Lake Michigan...
  
  
• Thomas Jefferson Cram
• Douglass Houghton
  Douglass Houghton
  Douglass Houghton was an American geologist and physician, primarily known for his exploration of the Keweenaw Peninsula of Michigan.-Early life and education:...