Wisconsin Geography: The Land
Find an overview of Wisconsin geography, topography, geographic land regions, land areas, and major rivers.
Access Wisconsin almanac furnishing more details on the state geography, geographical and land regions, climate and weather, elevation, land areas, bordering states, and other statistical data.
Although Wisconsin is not a coastal
state, it is largely defined by water. Its eastern border is the shoreline of Lake Michigan. The northwestern border is Lake Superior.
The Mississippi River forms the border between Wisconsin and Minnesota, as well as the border between Wisconsin and Iowa. A tributary
of the Mississippi, the St. Croix River, forms the rest of the western border. Only the border between Wisconsin and Illinois to the
south is dry.
Wisconsin is made up of these Physiographic Areas
Boreal Hardwood Transition
As the name implies, this area is a transition zone between the mixed hardwood forest to the south and the boreal forest to the north. Northern Minnesota, Wisconsin, and Michigan are in this physiographic area, as is much of southern Ontario and a small area of southeast Manitoba. The Great Lakes are a prominent ecological force in this area, affecting microclimates and forest community composition. These forest communities are a heterogeneous matrix with various oaks, maples, birch, and pines representing the southern element and spruces, tamarack, and balsam fir of boreal origin. Aspen is a common early successional species throughout.
Upper Great Lakes Plain
The Upper Great Lakes Plain covers the southern half of Michigan, northwest Ohio, northern Indiana, northern Illinois, southern Wisconsin, and small portions of southwest Minnesota and northwest Iowa. Glacial moraines and dissected plateaus are characteristic of the topography. Broadleaf forests, oak savannahs, and a variety of prairie communities are the natural vegetation types. A "Driftless Area" was not glaciated during the late Pleistocene and emerged as a unique area of great biological diversity.
The Lower Peninsula is fairly level but some low rolling hills can be found in the south. To the north this changes to a northern tableland of hilly belts. The lowest point in Michigan, along the shore of Lake Erie is found in the Lower Peninsula.
Wisconsin Landscape and Landforms:
Lake Superior Lowland
This small flat plain area extends about 5 to 20 miles inland. It slopes gradually upwards toward the south from the shores of Lake Superior.
Eastern Ridges and Lowlands (Great Lakes Plains)
The gently rolling hills of the Eastern Ridges and Lowlands extend from Green Bay south to Illinois. It is the richest agricultural region of Wisconsin where ice-age glaciers deposited earth over limestone ridges.
Northern Highland or Superior Upland
This area makes up about one third of the state. It reaches it's highest elevation in the north, and slopes downward to the south. It has hundreds of small lakes and heavily forested hills. The highest point in Wisconsin is Timms Hill.
The Central Plain is south of the Northern Highland and curves across the central part of the state. The Wisconsin River is located in the southern portion of this region. This is an area of buttes and mesas, unusual for this part of Wisconsin.
The Western Upland is located to the west of the Central Plain and is made up of limestone and sandstone bluffs along the Mississippi River. It extends along the Mississippi River to the border of Illinois. The southwestern portion is an area that is steeply sloped ravines and winding ridges.
Geography (from Greek γεωγραφία, geographia, lit. "earth description") is a field of science dedicated to the study of the lands, the features, the inhabitants, and the phenomena of the Earth.
The term "United States", when used in the geographical sense, means the continental United States, Alaska, Hawaii, Puerto Rico, Guam, and the U.S. Virgin Islands.