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 601625 of 4,124

Dam NameHeight (ft)YearHazardCondition
Conley Dam

Plymouth County

281975LowNot Rated
Conley Dam

Cherokee County

292002LowNot Rated
Conley Dam

Cherokee County

401997LowNot Rated
Conley Dam 2

Cherokee County

362002LowNot Rated
Conner Dam

Keokuk County

371979LowNot Rated
Conner Dam

Keokuk County

371967LowNot Rated
Conte Dam

Marshall County

241970LowNot Rated
Cook Dam

Dallas County

311965LowNot Rated
Cooper Cove Park Dam

Pocahontas County

431972LowNot Rated
Cooper Dam

Lucas County

291994LowNot Rated
Cope Dam

Davis County

222014LowNot Rated
Copper Creek Estates Dam

Polk County

212002SignificantSatisfactory
Copper Creek Lake Dam

Polk County

311995SignificantSatisfactory
Coralville Dam

Johnson County

1321958HighNot Available
Coralville Milldam

Johnson County

131880LowNot Rated
Coralville Regional Detention Basin

Johnson County

232001HighSatisfactory
Cord Subwatershed M-10464

Woodbury County

281957LowNot Rated
Cord Subwatershed M-5571

Woodbury County

361957LowNot Rated
Cord Subwatershed M-7234

Woodbury County

411957LowNot Rated
Corey Family Farms Dam

Calhoun County

332004LowNot Rated
Corning Reservoir Dam

Adams County

301917SignificantSatisfactory
Corpman Dam

Washington County

282024LowNot Rated
Corrigan Dam

Warren County

282005LowNot Rated
Cory Basin Dam

Guthrie County

222016SignificantSatisfactory
Corydon Reservoir Dam

Wayne County

261974SignificantSatisfactory
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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.