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 826850 of 4,124

Dam NameHeight (ft)YearHazardCondition
Denman Dam

Dallas County

261977LowNot Rated
Dennis Koenig Dam

Winneshiek County

282013LowNot Rated
Dennis Smith Dam

Lucas County

252023LowNot Rated
Depenning Dam

Jasper County

281977LowNot Rated
Derby Dam

Davis County

262001LowNot Rated
Derry Dam

Taylor County

321983LowNot Rated
Deschamp Dam

Tama County

261975LowNot Rated
Des Moines-Center Street Milldam

Polk County

111916LowNot Rated
Des Moines County Roadgrade Dam 18-70-2

Des Moines County

841987LowNot Rated
Des Moines County Roadgrade Dam 6-69-4

Des Moines County

261985LowNot Rated
Des Moines-Scott Street Milldam

Polk County

71920LowNot Rated
Des Moines-Waterworks Dam

Polk County

71923LowNot Rated
Desoto Dam

Pottawattamie County

251960LowSatisfactory
Dessel Dam

Cherokee County

351963LowNot Rated
Detrick Dam

Henry County

302021LowNot Rated
Dettmer Dam

Lee County

261974LowNot Rated
Deutsch Dam

Marshall County

351960LowNot Rated
De Vries Damfountain Hills Plats 3 and 4 Dam

Marion County

252012LowNot Rated
Diamondhead Lake Dam

Guthrie County

431963SignificantSatisfactory
Diamond Lake Campground Dam

Poweshiek County

262008LowNot Rated
Diamond Lake Dam

Dickinson County

81957LowNot Rated
Diamond Lake Dam (Poweshiek Co)

Poweshiek County

401952SignificantSatisfactory
Diamond Lake Watershed Site A-2

Poweshiek County

181966LowNot Rated
Diamond Lake Watershed Site B-8

Poweshiek County

271971SignificantFair
Diamond Lake Watershed Site B-9

Poweshiek County

281972LowNot 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.