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 101125 of 3,759

Dam NameHeight (ft)YearHazardCondition
Arnold-Armstrong Subwtrshd Sta 69+48

Monona County

491963LowNot Rated
Arnold-Armstrong Subwtrshd Sta 76+60 #3

Monona County

291963LowNot Rated
Arnold-Armstrong Subwtrshd Sta 99+95

Monona County

241963LowNot Rated
Arnold Dam

Lucas County

281984LowNot Rated
Arnold Dam

Wapello County

291997LowNot Rated
Arnold Lake Dam

Story County

361964LowNot Rated
Arp Dam

Johnson County

311970LowNot Rated
Arp Dam

Tama County

192021LowNot Rated
Arrowhead Investments Dam

Madison County

352020LowNot Rated
Arrowhead Lake Dam

Pottawattamie County

471959LowNot Rated
Arterburn/Kenealy Dam

Pottawattamie County

371961LowNot Rated
Artesian Lake Dam

Carroll County

121930LowNot Rated
Ashmore Dam

Adair County

251996LowNot Rated
Assman #4 Grade Stabilization Structure

Crawford County

392010LowNot Rated
Attril Dam

Plymouth County

321962LowNot Rated
Atwell Dam

Lucas County

301997LowNot Rated
Audubon Fn-44-3(S)-21-05

Audubon County

251977LowNot Rated
Axtell Dam

Jasper County

311972LowNot Rated
Axtell Dam

Fremont County

241960LowNot Rated
Ayers Dam

Madison County

371988LowNot Rated
Baack Dam

Warren County

271999LowNot Rated
Bachman Dam

Clarke County

272013LowNot Rated
Backes Dam

Benton County

261967LowNot Rated
Bacon Creek Watershed Site A-1

Woodbury County

581978LowNot Rated
Bacon Creek Watershed Site A-2

Woodbury County

641978LowNot 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.