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 21762200 of 4,124

Dam NameHeight (ft)YearHazardCondition
Langenfield/Kolln Dam

Crawford County

321975LowNot Rated
Langenfeld - Heiden Dam

Crawford County

442000LowNot Rated
Lange Dam

Madison County

332021LowNot Rated
Lamberts Dam

Lucas County

211997LowNot Rated
Lambert Dam

Lucas County

211999LowNot Rated
Lakewood Hills Dam

Black Hawk County

181967SignificantSatisfactory
Lakewood Dredge Spoil Dam

Warren County

301990LowNot Rated
Lake Wapello Dam

Davis County

571934SignificantSatisfactory
Lake Sundown Dam

Appanoose County

511976SignificantSatisfactory
Lake Sugema Silt Dam Site C

Van Buren County

231994LowNot Rated
Lake Sugema Silt Control Dam

Van Buren County

261992LowNot Rated
Lake Sugema Dam

Van Buren County

501992HighSatisfactory
Lake Smith Dam

Kossuth County

211965SignificantSatisfactory
Lakeside Development Dam

Linn County

452005SignificantSatisfactory
Lake Ponderosa Dam

Poweshiek County

501969HighSatisfactory
Lake Point Dam

Dallas County

201992LowNot Rated
Lake Panorama Dam

Guthrie County

701969SignificantSatisfactory
Lake Pahoja Dam

Lyon County

501974SignificantSatisfactory
Lake Ohana Dam #1

Mills County

462007SignificantPoor
Lake of Three Fires Dam

Taylor County

321967SignificantSatisfactory
Lake of Three Fire Dredge Spoil Contianment Dam

Taylor County

352003LowNot Rated
Lake of The Hills Dam

Scott County

481972HighSatisfactory
Lake Oelwein Dam

Fayette County

161908LowNot Rated
Lake Morris Wetland Dam Site 1

Lucas County

71998LowNot Rated
Lake Morris Erosion Control Site 8

Lucas County

211972LowNot 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.