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 18511875 of 3,759

Dam NameHeight (ft)YearHazardCondition
Malone Dam

Crawford County

271976LowNot Rated
Mallard Marsh Dam No 3

Cerro Gordo County

81967LowNot Rated
Mallard Marsh Dam No 1

Cerro Gordo County

81967LowNot Rated
Malcom Dam

Poweshiek County

302006LowNot Rated
Madsen Dam

Marshall County

341978LowNot Rated
Madison County Roadgrade Dam 4-74-29

Madison County

331987LowNot Rated
Madison County Roadgrade Dam 14-76-26

Madison County

441996LowNot Rated
Lyons Dam

Jefferson County

201998LowNot Rated
Lyon County Roadgrade Dam 10-98-48

Lyon County

311988LowNot Rated
Lynnville Dam

Jasper County

121918LowNot Rated
Lynn Dam

Fremont County

291966LowNot Rated
Lynch Dam

Davis County

222013LowNot Rated
Lylah Marsh Dam

Howard County

111960LowNot Rated
Lutz Dam

Clarke County

261967LowNot Rated
Lundquist Dam

Cherokee County

321959LowNot Rated
Lundquist Dam

Cherokee County

371995LowNot Rated
Lundell Dam

Cherokee County

341999LowNot Rated
Lundberg Dam

Montgomery County

311967LowNot Rated
Lum Hollow Subwatershed M-8552

Woodbury County

311959LowNot Rated
Lum Hollow Subwatershed M-6199

Woodbury County

391959LowNot Rated
Lum Hollow Subwatershed M-3847

Woodbury County

551959LowNot Rated
Lum Hollow Subwatershed M-27785

Woodbury County

381959LowNot Rated
Lum Hollow Subwatershed M-22453

Woodbury County

441959LowNot Rated
Lum Hollow Subwatershed M-17850

Woodbury County

361959LowNot Rated
Lum Hollow Subwatershed M-13210

Woodbury County

261959LowNot 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.