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 576600 of 4,124

Dam NameHeight (ft)YearHazardCondition
Clinton Flood Control - Whittier Dam

Clinton County

241994HighSatisfactory
Clive Lake Dam

Polk County

371989HighSatisfactory
Cloud Dam

Monona County

321995LowNot Rated
Clubine Dam

Monona County

422003LowNot Rated
Clyde Frizell

Adair County

262009LowNot Rated
Clymer Dam

Jones County

201997LowNot Rated
Coberly/Butler Dam

Monona County

451968LowNot Rated
Coberly Dam

Monona County

431970LowNot Rated
Coberly/Swenson Dam

Monona County

401964LowNot Rated
Coffman Dam

Tama County

261965LowNot Rated
Cohrs Dam

Harrison County

362011LowNot Rated
Colby Dam

Polk County

261968LowNot Rated
Cold Springs Dam

Cass County

121949LowNot Rated
Cole Dam

Jefferson County

271991LowNot Rated
Cole Dam

Van Buren County

71999LowNot 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
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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.