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 15761600 of 4,124

Dam NameHeight (ft)YearHazardCondition
Newton Dam

Adair County

221974LowNot Rated
Newton Dam

Adair County

201959LowNot Rated
Newquist Grade Stabilization Structure

Wapello County

272011LowNot Rated
New London Country Club Dam

Henry County

261910LowSatisfactory
Newby Dam

Hardin County

271965LowNot Rated
Neva Anderson Trust Dam

Montgomery County

332021LowNot Rated
Neustrom Subwatershed Site M-6

Woodbury County

331971LowNot Rated
Neustrom Subwatershed Site M-5

Woodbury County

391971LowNot Rated
Neustrom Subwatershed Site M-4

Woodbury County

481971LowNot Rated
Neustrom Subwatershed Site M-3

Woodbury County

251971LowNot Rated
Neustrom Subwatershed Site M-1

Woodbury County

301971LowNot Rated
Neustrom Subwatershed Site 9-3

Woodbury County

501971LowNot Rated
Neustrom Subwatershed Site 19-3

Woodbury County

401973LowNot Rated
Neustrom Subwatershed Site 17-2

Woodbury County

391971LowNot Rated
Neustrom Subwatershed Site 13-2

Woodbury County

391971LowNot Rated
Neustrom Subwatershed Site 13-1

Woodbury County

471971LowNot Rated
Neustrom Subwatershed Site 11-2

Woodbury County

371977LowNot Rated
Neustrom Subwatershed Site 11-1

Woodbury County

321977LowNot Rated
Neumann & Hunter Dam

Adair County

261969LowNot Rated
Nepple Dam

Davis County

272000LowNot Rated
Nepper Subwatershed Site M-5700

Monona County

431948LowNot Rated
Nepper Subwatershed Site 3348

Monona County

321948LowNot Rated
Nemitz Dam

Crawford County

311970LowNot Rated
Nelson South Wetland Dam

Pocahontas County

102004LowNot Rated
Nelson/Petersen Dam

Audubon County

401974LowNot 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.