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 826850 of 3,759

Dam NameHeight (ft)YearHazardCondition
Spencer Dam

Harrison County

472007LowNot Rated
Spence Dam

Warren County

322003LowNot Rated
Speck Dam

Mills County

342004LowNot Rated
Sparks Dam

Woodbury County

231964LowNot Rated
Southwest Iowa Egg Cooperative Dam

Cass County

381999LowNot Rated
Southpoint Wetland Mitigation Dam

Polk County

152004LowSatisfactory
South Magnolia Watershed Site Z

Harrison County

441958LowNot Rated
South Magnolia Watershed Site 5

Harrison County

371958LowNot Rated
South Magnolia Watershed Site 4

Harrison County

341958LowNot Rated
South Magnolia Watershed Site 3

Harrison County

281958LowNot Rated
South Magnolia Watershed Site 1

Harrison County

571958LowNot Rated
South Lake Dam

Linn County

281993LowNot Rated
South Hungerford 2 Watershed Site 9

Plymouth County

251976LowNot Rated
South Hungerford 2 Watershed Site 8

Plymouth County

261976LowNot Rated
South Hungerford 2 Watershed Site 5

Plymouth County

281967LowNot Rated
South Hungerford 2 Watershed Site 4

Plymouth County

271965LowNot Rated
South Hungerford 2 Watershed Site 11

Plymouth County

401964LowNot Rated
South Amana Pond Dam

Iowa County

251950LowNot Rated
South 6th St Stormwater Detention Basin

Marshall County

91997LowNot Rated
Sorenson Dam

Audubon County

221975LowNot Rated
Sopa Creek Watershed Site 4-40a

Appanoose County

271998LowNot Rated
Soap Creek Watershed Site 90-97

Wapello County

271997LowNot Rated
Soap Creek Watershed Site 90-95

Wapello County

272003LowNot Rated
Soap Creek Watershed Site 90-92

Wapello County

191997LowNot Rated
Soap Creek Watershed Site 90-91

Wapello County

281994LowNot 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.