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Senachwine Lake : ウィキペディア英語版 | Senachwine Lake
Senachwine Lake is a 3,324-acre (13.5 km²) riparian lake that forms part of the valley of the Illinois River. It is located in Putnam and Marshall Counties, Illinois. Its elevation is 439 feet (134 meters) above sea level. Senachwine Lake is connected by a shallow channel to adjacent Goose Lake, also a backwater lake of the Illinois River. ==Glacial relic== The drainage, by sudden flood, of a sizable lake of glacial meltwater upon the conclusion of the Wisconsin glacial period left the lower Illinois River valley, including the Senachwine Lake area, as a broad ribbon of relatively impermiable clay and silt bordered by low bluffs. During the post-glacial springtimes, as the climate of Illinois grew warmer, floods caused by snowmelt tended to fill sections of the valley faster than it could be drained during the rest of the year. Eventually the Illinois River became a braided, slow-moving alluvial river bordered by a string of riverside lakes and wetlands. Senachwine Lake is one of these backwater lakes.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Senachwine Lake」の詳細全文を読む
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