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 27762800 of 3,759

Dam NameHeight (ft)YearHazardCondition
Erickson Dam

Webster County

281978LowNot Rated
Erickson Dam

Harrison County

272003LowNot Rated
Erickson Dam

Clarke County

261989LowNot Rated
Erickson Dam

Union County

292006LowNot Rated
Equity Built Farms Dam

Appanoose County

261999LowNot Rated
Engnell Dam

Boone County

361970LowNot Rated
English Bench Watershed Site 9

Allamakee County

381970LowUnsatisfactory
English Bench Watershed Site 8

Allamakee County

341971LowNot Rated
English Bench Watershed Site 7

Allamakee County

331970LowNot Rated
English Bench Watershed Site 5

Allamakee County

471970LowNot Rated
English Bench Watershed Site 4

Allamakee County

341969LowNot Rated
English Bench Watershed Site 2

Allamakee County

271969LowNot Rated
English Bench Watershed Site 1

Allamakee County

341969LowNot Rated
England Dam

Wapello County

311978LowNot Rated
England Dam

Davis County

231974LowNot Rated
Engbers Dam

Mahaska County

251976LowNot Rated
Elwood Dam

Howard County

281967LowNot Rated
Elmore Dam

Jefferson County

272003LowNot Rated
Elliott Dam

Story County

301968LowNot Rated
Elliot Dam

Dallas County

401965LowNot Rated
Ellerbusch Dam

Ida County

221962LowNot Rated
Elks Club Dam

Floyd County

7LowSatisfactory
Elkhorn No.2 Subwatershed Site 1-3

Plymouth County

361984LowNot Rated
Elkhorn No.2 Subwatershed 1-5000

Plymouth County

271961LowNot Rated
Elkhorn No.2 Subwatershed 1-3112

Plymouth County

361961LowNot 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.