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 24262450 of 3,759

Dam NameHeight (ft)YearHazardCondition
Hildreth Dam

Montgomery County

251983LowNot Rated
High Prairie Farms Dam

Clarke County

292000LowNot Rated
Higdon Dam

Decatur County

332001LowNot Rated
Hieber Dam

Monona County

442000LowNot Rated
Hidden Acres Dam

Webster County

351990LowNot Rated
Hicks Dam

Benton County

262022LowNot Rated
Hickory Lake Dam

Polk County

341970LowNot Rated
Hickory Hills Recreation Dam

Tama County

291970LowSatisfactory
Hickenbottom Dam

Van Buren County

261959LowNot Rated
Hickenbottom Dam

Jefferson County

351985LowNot Rated
Hiatt Dam

Union County

221968LowNot Rated
Heston/Johnson Dam

Lucas County

311978LowNot Rated
Heston Dam

Appanoose County

261999LowNot Rated
Hess Dam #2

Guthrie County

221969LowNot Rated
Hess Dam

Dubuque County

261970LowNot Rated
Hess Dam

Guthrie County

211967LowNot Rated
Herzberg Dam

Taylor County

272020LowNot Rated
Hertz Dam

Story County

321959LowNot Rated
Hertitage Hills Dam

Louisa County

261995LowNot Rated
Herring Dam

Lucas County

281987LowNot Rated
Herman Farms Dam

Wapello County

261998LowNot Rated
Herbold Dam

Woodbury County

281995LowNot Rated
Herberger Dam

Warren County

371975LowNot Rated
Henter Dam

Madison County

391998LowNot Rated
Henry Dam

Plymouth County

191991LowNot 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.