Meredosia Lake is a

riparian A riparian zone or riparian area is the interface between land and a river or stream. Riparian is also the proper nomenclature for one of the terrestrial biomes of the Earth. Plant habitats and communities along the river margins and banks ar ...

lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...

that forms part of the valley of the

Illinois River The Illinois River ( mia, Inoka Siipiiwi) is a principal tributary of the Mississippi River and is approximately long. Located in the U.S. state of Illinois, it has a drainage basin of . The Illinois River begins at the confluence of the D ...

. It is located in

Cass Cass may refer to: People and fictional characters * Cass (surname), a list of people * Cass (given name), a list of people and fictional characters * Big Cass, ring name of wrestler William Morrissey * Cass, in British band Skunk Anansie * Cass, ...

and Morgan Counties,

Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolita ...

. Much of the floodplain isthmus between Lake Meredosia and the river is known as Meredosia Island, and much of the quasi-island and associated lakebed are part of the

Meredosia National Wildlife Refuge The Meredosia National Wildlife Refuge is a national wildlife refuge located along the Illinois River in Cass County and Morgan County in the U.S. state of Illinois. The refuge is adjacent to Meredosia, Illinois, but is managed by the U.S. Fish ...

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 Meredosia Lake area, as a broad ribbon of relatively impermeable

clay Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4). Clays develop plasticity when wet, due to a molecular film of water surrounding the clay par ...

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. Meredosia Lake is one of these backwater lakes.

Backwater lake and fish

During prehistoric and early historic times, backwater lakes bordering the Illinois, such as Meredosia Lake, became highly productive areas for

fishing Fishing is the activity of trying to catch fish. Fish are often caught as wildlife from the natural environment, but may also be caught from stocked bodies of water such as ponds, canals, park wetlands and reservoirs. Fishing techniques inclu ...

and

waterfowl Anseriformes is an order of birds also known as waterfowl that comprises about 180 living species of birds in three families: Anhimidae (three species of screamers), Anseranatidae (the magpie goose), and Anatidae, the largest family, which in ...

ing. The early Illinois River frontier town of

Meredosia, Illinois Meredosia is a village in Morgan County, Illinois, United States. The population was 1,044 at the 2010 census. It is part of the Jacksonville Micropolitan Statistical Area. Geography According to the 2010 census, Meredosia has a total area of , ...

, which is adjacent to the lake, grew through utilization of lakebed resources. Commercial fishing in Lake Meredosia continued at a high level until 1900–1910, when

toxic waste Toxic waste is any unwanted material in all forms that can cause harm (e.g. by being inhaled, swallowed, or absorbed through the skin). Mostly generated by industry, consumer products like televisions, computers, and phones contain toxic chemi ...

was injected into the Illinois River through the newly dug

Chicago Sanitary and Ship Canal The Chicago Sanitary and Ship Canal, historically known as the Chicago Drainage Canal, is a canal system that connects the Chicago River to the Des Plaines River. It reverses the direction of the Main Stem and the South Branch of the Chicago R ...

Today

Meredosia Lake is a local favorite for recreation, with a boat ramp located north of Meredosia. The lake is filled with silt and very shallow, and boaters primarily use the lake for waterfowling. The

Illinois Department of Natural Resources The Illinois Department of Natural Resources (IDNR) is the code department of the Illinois state government that operates the state parks and state recreation areas, enforces the fishing and game laws of Illinois, regulates Illinois coal mines, ...

manages the lake for the hunting of

duck Duck is the common name for numerous species of waterfowl in the family Anatidae. Ducks are generally smaller and shorter-necked than swans and geese, which are members of the same family. Divided among several subfamilies, they are a form t ...

Canada geese The Canada goose (''Branta canadensis''), or Canadian goose, is a large wild goose with a black head and neck, white cheeks, white under its chin, and a brown body. It is native to the arctic and temperate regions of North America, and it is o ...

snow geese The snow goose (''Anser caerulescens'') is a species of goose native to North America. Both white and dark morphs exist, the latter often known as blue goose. Its name derives from the typically white plumage. The species was previously placed ...

, and

teal alt=American teal duck (male), Green-winged teal (male) Teal is a greenish-blue colour. Its name comes from that of a bird — the Eurasian teal (''Anas crecca'') — which presents a similarly coloured stripe on its head. The word is ofte ...

References

{{authority control Lakes of Illinois Meredosia Meredosia Illinois River