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Great Black Swamp
The Great Black Swamp (also known simply as the Black Swamp), was a glacially fed wetland in northwest Ohio and extreme northeast Indiana, United States, that existed from the end of the Wisconsin glaciation until the late 19th century. Comprising extensive swamps and marshes, with some higher, drier ground interspersed, it occupied what was formerly the southwestern part of proglacial Lake Maumee, a holocene precursor to Lake Erie. The area was about wide (north to south) and long, covering an estimated . Gradually drained and settled in the second half of the 19th century, it is now highly productive farm land. During the second half of the 20th century, efforts were undertaken to preserve and restore portions of the swamp to its pre-settlement state.
==Description==
The land once covered by the swamp lies primarily within the Maumee River and Portage River watersheds in northwest Ohio and northeast Indiana. The boundary was determined primarily by ancient sandy beach ridges formed on the shores of Lakes Maumee and Whittlesey, after glacial retreat several thousand years ago. It stretched roughly from Fort Wayne, Indiana in the west, eastward to the Ottawa National Wildlife Refuge near Port Clinton along the Lake Erie shore, and from (roughly) US 6 south to near Lima and Findlay.〔(The Great Black Swamp ), Black Swamp Conservancy〕 Near its southern edge at the southwestern corner of present-day Auglaize County, the swamp was so impervious to travel that wheeled transportation was impossible during most of the year, and local residents thought the rigors of travel to be unsuitable for anyone except adult men.〔McMurray, William J., ed. ''History of Auglaize County Ohio''. Vol. 1. Indianapolis: Historical Publishing Company, 1923, 335.〕
The vast Swamp was a network of forests, wetlands, and grasslands. In the lowest, flattest areas, prone to permanent inundation, deciduous swamp forests predominated, characterized especially by species of ash, elm, cottonwood and sycamore. In slightly higher areas with some topographic relief and better drainage, beech, maples, basswood, tuliptree and other more mesic species were dominant. On elevated beach ridges and moraines with good to excessive drainage, more xeric species, especially oak and hickory, were dominant. Unlike other swampy areas of the Great Lakes, such as northern Minnesota, there were no conifers (Sampson, 1930). The area contained non-forested wetlands, particularly marsh and wet prairies, with marshes being particularly extensive along the Lake Erie shoreline east of Toledo.
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