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 23262350 of 3,759

Dam NameHeight (ft)YearHazardCondition
Illum Dam

Marshall County

272002LowNot Rated
Il & Ic Dam

Jefferson County

81992LowNot Rated
Idot Wetland Dam

Louisa County

81994LowNot Rated
Idot Roadgrade Dam 7-88-47

Woodbury County

251979LowNot Rated
Idot Roadgrade Dam 32-88-25

Hamilton County

281977LowNot Rated
Ida County Roadgrade Dam 04-85-41

Crawford County

281961LowNot Rated
Ibeling Dam

Franklin County

281985LowNot Rated
Hynick Dam 2

Mahaska County

281962LowNot Rated
Hynick Dam

Mahaska County

291963LowNot Rated
Hutchings Dam

Davis County

181994LowNot Rated
Huseman Dam

Madison County

302002LowNot Rated
Hurlburt Dam

Kossuth County

241975LowNot Rated
Hunter Dam #2

Madison County

192003LowNot Rated
Hunter Dam

Madison County

161999LowNot Rated
Hunter Dam

Madison County

232001LowNot Rated
Hunter Dam

Jasper County

401978LowNot Rated
Hunt Dam

Delaware County

262008LowNot Rated
Hunt Club Farms Dam

Tama County

242021LowNot Rated
Hunemiller Dam

Butler County

191997LowNot Rated
Hundahl Dam

Monona County

301950LowNot Rated
Humphrey/Sorenson Dam

Audubon County

221967LowNot Rated
Hummel Dam

Plymouth County

431966LowNot Rated
Humboldt Milldam

Humboldt County

131912LowNot Rated
Hulme Dam

Davis County

331999LowNot Rated
Hull Reclamation Site 5

Mahaska County

261988LowNot 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.