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 37013725 of 3,759

Dam NameHeight (ft)YearHazardCondition
Winkler Dam

Wapello County

301963LowNot Rated
Winkler / Spies Dam

Pocahontas County

71999LowNot Rated
Winkowitsch Dam

Butler County

241967LowNot Rated
Winner Dam

Harrison County

412011LowNot Rated
Winther Dam

Audubon County

251968LowNot Rated
Wise Dam

Woodbury County

311967LowNot Rated
Wise Dam

Polk County

251959LowNot Rated
Wittstock Dam

Union County

271977LowNot Rated
Wm. Seymour Dam

Warren County

411981LowNot Rated
Wohlers Dam

Pottawattamie County

421961LowNot Rated
Wohlers Dam

Pottawattamie County

401959LowNot Rated
Wolf Creek Subwatershed Site 3-1

Woodbury County

331972LowNot Rated
Wolf Creek Subwatershed Site 3-2

Woodbury County

351971LowNot Rated
Wolf Creek Subwatershed Site 4-4

Woodbury County

391991LowNot Rated
Wolf Creek Subwatershed Site 5-1

Woodbury County

271971LowNot Rated
Wolf Creek Subwatershed Site 5-2

Woodbury County

311971LowNot Rated
Wolf Creek Subwatershed Site 5a-1

Woodbury County

401971LowNot Rated
Wolf Creek Subwatershed Site 6-1

Woodbury County

261971LowNot Rated
Wolf Creek Subwatershed Site M-2

Woodbury County

301971LowNot Rated
Wolf Creek Subwatershed Site M-3

Woodbury County

291971LowNot Rated
Wolfe Dam

Madison County

262000LowNot Rated
Wolterman Dam

Ida County

281998LowNot Rated
Woodbury County Road Dam 8-87-44

Woodbury County

382001LowNot Rated
Woodbury County Roadgrade Dam 18-87-44

Woodbury County

441988LowNot Rated
Woodbury County Roadgrade Dam 30-88-43

Woodbury County

381999LowNot 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.