Iowa Dams

4,124 dams tracked by the National Inventory of Dams

Total Dams

4,124

High Hazard

91

2.2%

Poor / Unsatisfactory

25

Average Age

46 yrs

Hazard Classification

High91 (2.2%)
Significant274 (6.6%)
Low3,759 (91.1%)

Condition Assessment

Satisfactory259 (6.3%)
Fair81 (2.0%)
Poor / Unsatisfactory25 (0.6%)
Not Rated3,759 (91.1%)

Federal

25

State

141

Local

1,938

Private

2,014

All Dams in Iowa

Showing 451475 of 3,759

Dam NameHeight (ft)YearHazardCondition
Carson Dam

Cherokee County

321977LowNot Rated
Carson Dam

Johnson County

271978LowNot Rated
Carson Dam

Clarke County

261979LowNot Rated
Carstens & Stover Dam

Crawford County

381971LowNot Rated
Carter Dam

Iowa County

281971LowNot Rated
Carter Dam

Jefferson County

281967LowNot Rated
Carter Dam

Des Moines County

311986LowNot Rated
Carter Dam

Madison County

361993LowNot Rated
Carver Dam

Story County

261991LowNot Rated
Case Dam

Adams County

252000LowNot Rated
Casey Mill and Elevator Ia-57-148

Guthrie County

231974LowNot Rated
Casper Reclamation Dam

Madison County

421998LowNot Rated
Cassens Dam

Keokuk County

291982LowNot Rated
Cedar Falls Milldam

Black Hawk County

121939LowNot Rated
Cedar Lake Dam

Linn County

15LowNot Rated
Cedar Rapids Milldam Iel&P

Linn County

81967LowNot Rated
Center Lake Dam

Allamakee County

321982LowNot Rated
Center Lake Outlet Control Structure

Dickinson County

72009LowNot Rated
Centerville Waterworks Dam

Appanoose County

221997LowNot Rated
Central City Milldam

Linn County

141965LowNot Rated
Central Holding Co. Dam

Carroll County

381988LowNot Rated
Central Park Lake Dam

Jones County

231965LowNot Rated
Chandler Dam

Lucas County

301958LowNot Rated
Chappel Studio Pond Dam

Jefferson County

302005LowNot Rated
Charbonneau Dam

Keokuk County

241972LowNot Rated
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.