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 125 of 259

Dam NameHeight (ft)YearHazardCondition
Aegon Dam

Linn County

261997HighSatisfactory
Afton Reservoir Dam

Union County

511936SignificantSatisfactory
Ames Basin #2

Story County

131985HighSatisfactory
Ames Basin #3

Story County

101985HighSatisfactory
Ames Basin #4

Story County

121985HighSatisfactory
Anamosa

Jones County

121909LowSatisfactory
Arbor Valley Lake Dam

Clarke County

582008HighSatisfactory
Backbone Dam

Delaware County

331938SignificantSatisfactory
Bacon Creek Watershed Site A-2-4

Woodbury County

511979HighSatisfactory
Bacon Creek Watershed Site A-3

Woodbury County

691978HighSatisfactory
Bacon Creek Watershed Site A-3-1

Woodbury County

501978HighSatisfactory
Bacon Creek Watershed Site C-1

Woodbury County

411976HighSatisfactory
Bacon Creek Watershed Site H-1

Woodbury County

541984SignificantSatisfactory
Bacon Creek Watershed Site H-1-3

Woodbury County

401981SignificantSatisfactory
Bacon Creek Watershed Site H-2-1

Woodbury County

591981SignificantSatisfactory
Bacon Creek Watershed Site H-2-2

Woodbury County

511981SignificantSatisfactory
Bacon Creek Watershed Site H-3-1

Woodbury County

551984SignificantSatisfactory
Bacon Creek Watershed Site H-3-2

Woodbury County

461984SignificantSatisfactory
Bacon Creek Watershed Site J-1

Woodbury County

461984SignificantSatisfactory
Bacon Creek Watershed Site J-3

Woodbury County

531989SignificantSatisfactory
Badger Creek Watershed Site 19-5

Madison County

321974SignificantSatisfactory
Badger Creek Watershed Site M-1-A

Madison County

461980SignificantSatisfactory
Ballard Country Club Dam

Story County

331974LowSatisfactory
Bamboo Ridge Lake

Black Hawk County

202012HighSatisfactory
Bays Branch

Guthrie County

191962SignificantSatisfactory
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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.