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 18011825 of 3,759

Dam NameHeight (ft)YearHazardCondition
Mc Call Subwatershed 1-2182

Monona County

271965LowNot Rated
Mc Broom Dam

Clarke County

251970LowNot Rated
Mc Aninch Dam

Warren County

331968LowNot Rated
Mc Aninch Dam

Warren County

381977LowNot Rated
Mc Aninch Dam

Warren County

271981LowNot Rated
Maynes Grove West Dam

Franklin County

271992LowNot Rated
Maynes Grove South Dam

Franklin County

291992LowNot Rated
Mayfield Dam

Clarke County

311997LowNot Rated
Maxwell Dam

Henry County

212008LowNot Rated
Maxwell Dam

Woodbury County

381960LowNot Rated
Maxwell Dam

Union County

211983LowNot Rated
Maxon Reservoir Dam

Monroe County

341984LowNot Rated
Maurer Dam

O'Brien County

432000LowNot Rated
Maudsley Dam

Kossuth County

371983LowNot Rated
Matt Leichty Dam

Henry County

292008LowNot Rated
Matthew Brown

Union County

302018LowNot Rated
Matt Brown Dam

Union County

322019LowNot Rated
Mathes

Des Moines County

641941LowPoor
Mather Dam

Page County

332012LowNot Rated
Masters Dam

Lucas County

301984LowNot Rated
Massner Dam

Louisa County

271977LowNot Rated
Massey Dam

Decatur County

281986LowNot Rated
Mass Dam

Mills County

281959LowNot Rated
Mason Dam

Jasper County

221963LowNot Rated
Mason City-Lehigh Cement Milldam

Cerro Gordo County

81924LowNot 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.