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 9761000 of 3,759

Dam NameHeight (ft)YearHazardCondition
Smith Dam

Monroe County

261991LowNot Rated
Smith (Bill) Dam

Union County

282013LowNot Rated
Sloppy Dam

Marshall County

281999LowNot Rated
Sloan Dam

Polk County

271968LowNot Rated
Sloan Dam

Davis County

311975LowNot Rated
Slip Bluff Park Dam

Decatur County

331970LowNot Rated
Slater Dam

Dallas County

291967LowNot Rated
Skubal Dam

Washington County

311975LowNot Rated
Skidmore Dam

Louisa County

211989LowNot Rated
Skeens Pond

Warren County

342017LowNot Rated
Siverly Dam

Ringgold County

251996LowNot Rated
Sioux Rapids Golf Club Dam

Buena Vista County

411980LowNot Rated
Sinnwell Dam

Madison County

271987LowNot Rated
Singer Dam

Jefferson County

271963LowNot Rated
Sinclair Dam

Wayne County

281977LowNot Rated
Sims Dam

Lucas County

361988LowNot Rated
Simpson Dam

Decatur County

281991LowNot Rated
Simpson Creek Watershed Site 5

Fremont County

361958LowNot Rated
Simpson Creek Watershed Site 4

Fremont County

411958LowNot Rated
Simpson Creek Watershed Site 1

Fremont County

461958LowNot Rated
Simonson Dam

Palo Alto County

241965LowNot Rated
Simonsen Subwatershed Sta 142+42 Main

Cherokee County

331952LowNot Rated
Simonsen Subwatershed Sta 123+48 Main

Cherokee County

331952LowNot Rated
Simonsen Subwatershed Lat B Sta 64+20

Cherokee County

281952LowNot Rated
Simonsen Subwatershed Lat A Sta20+00

Cherokee County

321952LowNot 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.