Wikipedia

Lake Erie Basin

Lake Erie Basin consists of Lake Erie and surrounding watersheds, which are typically named after the river, creek, or stream that provides drainage into the lake. The watersheds are located in the states of Indiana, Michigan, New York, Ohio, and Pennsylvania in the United States, and in the province of Ontario in Canada. The basin is part of the Great Lakes Basin and Saint Lawrence River Watershed, which feeds into the Atlantic Ocean. 80% of the lake's water flows in from the Detroit River, with only 9% coming from all of the remaining watersheds combined. (The remainder (11%) is derived from direct precipitation into the lake.) A littoral zone serves as the interface between land and lake, being that portion of the basin where the lake is less than 15 feet (4.6 m) in depth.[1]

Lake Erie Basin
Another perspective on the Lake Erie Basin's situation within the Great Lakes Basin

History edit

 
The Wisconsin glaciation formed the Great Lakes basin

The Lake Erie Basin was formed at the end of the Wisconsin glaciation. The basin was part of Glacial Lake Maumee until an eastern drainage opened at Niagara, at which point the Maumee River Watershed reversed its flow eastward. The Great Black Swamp is thought to be a remnant of the glacial lake.

Geography edit

Indiana edit

Michigan edit

 
Detroit River

Michigan's drainage basin consists of 5,808 square miles (15,040 km2).

New York edit

 
Mouth of Cattaraugus Creek where it enters Lake Erie

New York's drainage basin covers 2,300 square miles (6,000 km2).

Ohio edit

 
Mouth of Conneaut Creek where it empties into Lake Erie

Pennsylvania edit

Further information: Lake Erie Watershed (Pennsylvania)
 
The mouth of Duck Run, in Erie Bluffs State Park

Ontario edit

 
Landsat photo shows Lake St. Clair, with the Detroit River connecting southward to Lake Erie and the St. Clair River connecting northward to Lake Huron
 
Map of Grand River

Economy edit

Agricultural, industrial, and residential land use are the primary nonpoint sources of pollution in the Lake Erie Basin. National and state environmental agencies, as well as interstate and binational cooperative efforts, focus on water quality, especially since the freshwater lake is used extensively for drinking water, recreation, and the fishing industry. Habitat and flow alteration cause siltation and sedimentation issues which can require dredging. Fertilizer runoff from farms and residences and unplanned releases from sewage treatment plants promote eutrophication through nutrient and organic enrichment, bacterial contamination, and the appearance of ammonium hydroxide. Industrial land use adds metals that flow into the basin and cause sediment contamination.[2]

See also edit

References edit

  1. ^ Comprehensive Wildlife Conservation Strategy for New York, pp 235-236
  2. ^ Biological and Water Quality Study of the Toussaint River and Rusha Creek Basins, 2005, Ohio EPA, pp x-xv

External links edit

Overall edit

Indiana edit

  • See Map of Ohio's Principal Streams and Drainage Areas, including a small but important extension of waterway mapping across Ohio's Lake Erie Basin borders into the states of Indiana, Michigan, and Pennsylvania

Michigan edit

  • Michigan and the Lake Erie Basin
  • See Map of Ohio's Principal Streams and Drainage Areas, including a small but important extension of waterway mapping across Ohio's Lake Erie Basin borders into the states of Indiana, Michigan, and Pennsylvania

New York edit

Ohio edit

Pennsylvania edit

Ontario edit

42°N 82°W / 42°N 82°W / 42; -82

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