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 24012425 of 3,759

Dam NameHeight (ft)YearHazardCondition
Honey Creek Watershed Site A-2

Lucas County

221956LowNot Rated
Honey Creek F-1

Lucas County

281955LowNot Rated
Honey Creek F-1

Lucas County

281955LowNot Rated
Holste Dam

Cass County

261968LowNot Rated
Holsapple Dam

Van Buren County

302000LowNot Rated
Holm Dam

Madison County

361972LowNot Rated
Holm Dam

Butler County

201969LowNot Rated
Holland Marsh Dam

Grundy County

111997LowNot Rated
Holesinger Dam

Clinton County

252004LowNot Rated
Holdens Pond Dam

Iowa County

251950LowNot Rated
Holden Dam

Iowa County

482000LowNot Rated
Hoisington Dam

Mitchell County

82021LowNot Rated
Hoffman Dam

Hardin County

271994LowNot Rated
Hoffman Dam

Dubuque County

302022LowNot Rated
Hoffman Dam

Ida County

241971LowNot Rated
Hobbs Dam

Lucas County

82010LowNot Rated
Hirsch Dam

Madison County

251975LowNot Rated
Hinze Dam

Fremont County

301960LowNot Rated
Hinrichs Dam

Iowa County

321970LowNot Rated
Hinegardner Lake Dam

Tama County

181963LowNot Rated
Hinebaugh Dam

Decatur County

241979LowNot Rated
Hilleary Dam

Des Moines County

321989LowNot Rated
Hill Dam

Audubon County

281962LowNot Rated
Hill Dam

Warren County

251972LowNot Rated
Hill Dam

Adair County

222002LowNot 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.