Following is a list of dams and reservoirs in Iowa. All major dams are linked below. The National Inventory of Dams defines any "major dam" as being tall with a storage capacity of at least , or of any height with a storage capacity of .

Dams and reservoirs in Iowa

:''This list is incomplete. You can help Wikipedia by expanding it.'' * Coralville Dam,

Coralville Lake Coralville Lake is an artificial lake in Johnson County, Iowa, United States, formed by the Coralville Dam, a dam built from 1949 to 1958 on the Iowa River upstream from the city of Coralville, Iowa. History After widespread flooding in the Unit ...

United States Army Corps of Engineers , colors = , anniversaries = 16 June (Organization Day) , battles = , battles_label = Wars , website = , commander1 = ...

* Dale Maffitt Dam,

Dale Maffitt Reservoir Maffitt Lake is a reservoir in the four corners of Dallas County, Polk County, Warren County, and Madison County, Iowa. It is owned by the Des Moines Water Works that serves as an emergency water supply for the city of Des Moines, Iowa. In a d ...

, Des Moines Water Works * Delhi Dam, Lake Delhi, locally owned (breached 2010) * Lake Icaria Dam, Lake Icaria, Adams County Soil and Water Conservation District *

Lock and Dam No. 9 Lock and Dam No. 9 is a Lock (water transport), lock and dam located near Lynxville, Wisconsin and Harpers Ferry, Iowa on the Upper Mississippi River, Upper Mississippi River around river mile 647.9. The lower portion of Pool 9 was formally named L ...

, Big Lake and

Lake Winneshiek Lake Winneshiek is the name given to that portion of Navigation Pool 9 impounded by Lock and Dam No. 9 between the dam to 4 miles south of the city of Lansing, Iowa on the Upper Mississippi River, near Ferryville, Wisconsin. It encompasses about ...

, USACE * Lock and Dam No. 10, Mississippi River, USACE * Lock and Dam No. 11, Mississippi River, USACE * Lock and Dam No. 12, Mississippi River, USACE *

Lock and Dam No. 13 Lock and Dam No. 13 is a lock and dam located on the Upper Mississippi River above Fulton, Illinois and Clinton, Iowa, United States. This facility offers visitors a view of the barges and boats locking through on the widest pool in the Upper Miss ...

, Lake Clinton, USACE * Lock and Dam No. 14, Mississippi River, USACE *

Lock and Dam No. 15 Lock and Dam No. 15 is a lock and dam located on the Upper Mississippi River. It spans the river between Rock Island, Illinois and Davenport, Iowa. Lock and Dam 15 is the largest roller dam in the world, its dam is long and consists of nine no ...

, Mississippi River, USACE * Lock and Dam No. 16, Mississippi River, USACE *

Lock and Dam No. 17 Lock and Dam No. 17 is a lock and dam located near New Boston, Illinois on the Upper Mississippi River near river mile 437. Its main lock is wide and long with its bottom at an elevation of . Normal pool elevation behind the dam is . The movab ...

, Mississippi River, USACE * Lock and Dam No. 18, Mississippi River, USACE *

Lock and Dam No. 19 Lock and Dam No. 19 is a lock and dam located on the Upper Mississippi River near Keokuk, Iowa. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 19 Historic District, #04000179 covering , 7 building ...

, Mississippi River, USACE * Rathbun Dam,

Rathbun Lake Rathbun Lake was constructed and is operated by the U.S. Army Corps of Engineers. Located at Chariton River mile marker 142, approximately 7 miles north of Centerville, Iowa, in Appanoose County, it is one of the largest lakes in Iowa. The lake ...

, USACE * Red Rock Dam, Lake Red Rock, USACE *

Saylorville Dam Saylorville Lake is a reservoir on the Des Moines River in Iowa, United States. It is located upstream from the city of Des Moines, and from the mouth of the Des Moines River at the Mississippi River. It was constructed as part of a flood contro ...

Saylorville Lake Saylorville Lake is a reservoir on the Des Moines River in Iowa, United States. It is located upstream from the city of Des Moines, and from the mouth of the Des Moines River at the Mississippi River. It was constructed as part of a flood contro ...

, USACE * Three Mile Reservoir Dam, Three Mile Reservoir, Three Mile Reservoir Agency

References

{{Dams and reservoirs in US

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 ...

Dams A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, ...