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May 30, 1974 (Des Moines: Polk: Training site for black officers in World War I. 8: George M. Verity: George M. Verity (towboat): December 20, 1989 (Keokuk: Lee: One of three surviving steam-powered towboats in the United States, this ship pioneered on upper Mississippi in a certain way, leading to large private industry.
Name Image Date Location County Ownership Description Anderson Goose Lake: 1975: Iowa: Private One of the few essentially natural glacial pothole lakes remaining in Iowa.
Lake: federal (Superior National Forest) A large tract of undisturbed mixed pine and black spruce forest. Lac la Croix Research Natural Area: 1980: St. Louis: federal (Superior National Forest) Old-growth virgin pine forests. Lake Agassiz Peatlands Natural Area: 1965
Built between 1909-1910, the station served as a crucial aid to navigation for commercial freighters until 1969, at a time when the Great Lakes emerged as a vital component of the nation's industrial economy. Split Rock is a Minnesota state historic site and is open to the public, and operates a website for the public. 23: Thorstein Veblen ...
Lidar-derived image of Marching Bears Mound Group, Effigy Mounds National Monument.. Prehistoric earthworks by mound builder cultures are common in the Midwest.However, mounds in the shape of mammals, birds, or reptiles, known as effigies, apparently were constructed primarily by peoples in what is now known as southern Wisconsin, northeast Iowa, and small parts of Minnesota and Illinois.
It was during the regional retreat of the Lake Superior Lobe and glacial meltwater flow from deglaciation and glacial Lake Nemadji and Lake Duluth caused the entrenchment of the St. Croix River and the formation of the deep gorge of the St. Croix River of the St. Croix River valley and its famous potholes occurred. In and surrounding Polk ...
In 1961 local advocates arranged a visit by state park officials, who agreed that Wildwood Park could be expanded into a state park. The land was transferred to the state of Minnesota and in 1963 Lake Louise State Park was created by an act of the Minnesota Legislature. At that time it contained only the lake and 636 acres (2.6 km 2). The ...
Big Spirit Lake is a natural body of water, approximately 5,684 acres (2,300 ha) in area, in Dickinson County in northwest Iowa in the United States. It is part of the chain of lakes known as the Iowa Great Lakes, the northern shore of the lake straddles the border with Minnesota. It is the largest natural lake in Iowa.