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
Anthon Subwatershed M-4001

Woodbury County

281954LowNot Rated
Anna Smith Dam

Cass County

292023LowNot Rated
Ankeny Golf & Country Club Dam

Polk County

311962LowNot Rated
Angran Dam

Monroe County

332001LowNot Rated
Andrian-Wright-Idnr

Washington County

232005LowNot Rated
Andriano Dam

Warren County

271969LowNot Rated
Andrew Dam

Decatur County

301983LowNot Rated
Andresen/Coberly Dam

Monona County

601977LowNot Rated
Anderzhon Dam

Fremont County

331966LowNot Rated
Anderzhon Dam

Fremont County

311965LowNot Rated
Anderson/Weakland Dam

Clarke County

261969LowNot Rated
Anderson/Timmerman Dam

Adams County

271967LowNot Rated
Anderson Dam

Buena Vista County

271978LowNot Rated
Anderson Dam

Montgomery County

291960LowNot Rated
Anderson Dam

Montgomery County

242000LowNot Rated
Anderson Dam

Pottawattamie County

311971LowNot Rated
Anderson Dam

Ringgold County

241982LowNot Rated
Anderson Dam

Wapello County

381999LowNot Rated
Anderson Dam

Clay County

312005LowNot Rated
Andersen Dam

Harrison County

272001LowNot Rated
Anamosa State Reformatory Dam

Jones County

191963LowNot Rated
Anamosa

Jones County

121909LowSatisfactory
Amos/Everly Dam

Polk County

241968LowNot Rated
Amos Dam

Warren County

291969LowNot Rated
Ammons Roadgrade Structure

Monroe County

302004LowNot 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.