There are several lakes named Mud Lake within the U.S. state of

Iowa Iowa () is a state in the Midwestern region of the United States, bordered by the Mississippi River to the east and the Missouri River and Big Sioux River to the west. It is bordered by six states: Wisconsin to the northeast, Illinois to the ...

Clay County

Mud Lake is a lake on the

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 ...

- Palo Alto County line. Mud Lake is a lake in southeastern corner of

Clay County Clay County is the name of 18 counties in the United States. Most are named for Henry Clay, U.S. Senator and statesman: * Clay County, Alabama * Clay County, Arkansas (named for John Clayton, and originally named Clayton County) * Clay County, Flor ...

. :Mud Lake State Wildlife Management Area is on this site.

Dubuque County

Mud Lake is a bay along the

Mississippi River The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it f ...

in Peru Township of

Dubuque County Dubuque County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 99,266, making it the eighth-most populous county in Iowa. The county seat is Dubuque. The county is named for Julien Dubuque, the first Eur ...

. : It was a lake until Lock and Dam No. 11 flooded the banks of the river. This former lake is part of the Upper Mississippi River Wildlife and Fish Refuge.

Linn County

Mud Lake is a lake in Monroe Township of Linn County. :It is an

Oxbow lake An oxbow lake is a U-shaped lake or pool that forms when a wide meander of a river is cut off, creating a free-standing body of water. In South Texas, oxbows left by the Rio Grande are called '' resacas''. In Australia, oxbow lakes are call ...

of the Cedar River. The lake is within the Chain Lakes Game Management Area.

References

USGS—U.S. Board on Geographic Names
Lakes of Iowa {{LinnCountyIA-geo-stub