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 26012625 of 3,759

Dam NameHeight (ft)YearHazardCondition
Rocky Branch Creek Watershed Site A-5

Jefferson County

261960LowNot Rated
Rocky Branch Creek Watershed Site C-2

Jefferson County

291969LowNot Rated
Rocky Branch Creek Watershed Site D-2

Jefferson County

351964LowNot Rated
Rocky Branch Creek Watershed Site H-5

Jefferson County

261958LowNot Rated
Rocky Branch Creek Watershed Site H-7

Jefferson County

211958LowNot Rated
Rod and Reel Lake Dam

Decatur County

351970LowNot Rated
Rodenburg/Porter Dam

Pottawattamie County

391959LowNot Rated
Rodgers Dam

Davis County

301970LowNot Rated
Rodgers Dam

Marion County

281981LowNot Rated
Rodgers Dam

Jasper County

341967LowNot Rated
Rodney Subwatershed Site 12-2

Monona County

351969LowNot Rated
Rodney Subwatershed Site 2-1

Monona County

321970LowNot Rated
Rodney Subwatershed Site 5-1

Monona County

431969LowNot Rated
Rodney Subwatershed Site 8-1

Monona County

531969LowNot Rated
Rodney Subwatershed Site 8-2

Monona County

351969LowNot Rated
Roeder Dam

Tama County

301996LowNot Rated
Roepke Dam

Cherokee County

281977LowNot Rated
Rohwer Dam

Pottawattamie County

221962LowNot Rated
Rolling Hills Dam #1

Story County

371973LowNot Rated
Rolling Hills Dam #2

Story County

401973LowNot Rated
Rolling Hills Estate Dam - Jones County

Jones County

302006LowNot Rated
Ron Pickard Road Structure

Jefferson County

242009LowNot Rated
Rooks Dam

Hardin County

381959LowNot Rated
Rosa Dam

Lucas County

332001LowNot Rated
Rose Acre Farm Dam

Madison County

222005LowNot 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.