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 12511275 of 3,759

Dam NameHeight (ft)YearHazardCondition
Quad Valley Subwatershed Site 1d-1

Ida County

361967LowNot Rated
Quad Valley Subwatershed Site 1-3

Ida County

291967LowNot Rated
Quad Valley Subwatershed Site 1-2

Ida County

371967LowNot Rated
Q Pond Park Dam

Clarke County

341900LowNot Rated
Putz Dam

Warren County

321977LowNot Rated
Putz Dam

Warren County

271966LowNot Rated
Putnam Dam

Davis County

331978LowNot Rated
Provost Bay Dam

Sac County

10LowNot Rated
Promise City Reservoir Dam

Wayne County

251900LowNot Rated
Probasco Dam

Appanoose County

241982LowNot Rated
Price Dam

Appanoose County

272001LowNot Rated
Prehm Dam

Henry County

331986LowNot Rated
Powers Dam

Mills County

411960LowNot Rated
Pottorff Dam

Adams County

261999LowNot Rated
Pottawattamie CO Roadgrade Dam 8-76-42

Pottawattamie County

431968LowNot Rated
Posten Dam

Page County

391975LowNot Rated
Possehl Dam

Monroe County

331989LowNot Rated
Porter Dam

Polk County

251955LowNot Rated
Porter Dam

Davis County

262002LowNot Rated
Pony Creek Watershed Site 9

Mills County

601967LowNot Rated
Pony Creek Watershed Site 8a

Mills County

621966LowNot Rated
Pony Creek Watershed Site 7

Mills County

301965LowNot Rated
Pony Creek Watershed Site 6u

Mills County

241965LowNot Rated
Pony Creek Watershed Site 34

Mills County

461963LowNot Rated
Pony Creek Watershed Site 31

Mills County

381963LowNot 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.