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 526550 of 3,759

Dam NameHeight (ft)YearHazardCondition
Cole Dam

Van Buren County

71999LowNot Rated
Cole Dam

Jefferson County

271991LowNot Rated
Cole (South) Dam

Van Buren County

81999LowNot Rated
College Corner Subwatershed Site 3-1

Woodbury County

331968LowNot Rated
College Corner Subwatershed Site 4-2

Woodbury County

281966LowNot Rated
College Corner Subwatershed Site 4-3

Woodbury County

291967LowNot Rated
College Corner Subwatershed Site 4-5

Woodbury County

401967LowNot Rated
Collier Dam

Harrison County

411974LowNot Rated
Collins Dam

Davis County

311997LowNot Rated
Combs Dam

Poweshiek County

231974LowNot Rated
Combs Dam

Davis County

221998LowNot Rated
Commers Dam

Montgomery County

332023LowNot Rated
Conley Dam

Plymouth County

281975LowNot Rated
Conley Dam

Cherokee County

401997LowNot Rated
Conley Dam

Cherokee County

292002LowNot 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
Coralville Milldam

Johnson County

131880LowNot Rated
Cord Subwatershed M-10464

Woodbury County

281957LowNot 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.