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
Tallest Dams
- Coralville Dam132 ft
- Saylorville Dam125 ft
- County Basin Dam104 ft
- Rathbun Dam100 ft
- Brushy Creek Dam100 ft
High Hazard Dams
- Coralville DamHigh
- Saylorville DamHigh
- Rathbun DamHigh
- Brushy Creek DamHigh
- Big Creek Barrier DamHigh
Poor Condition Dams
All Dams in Iowa
Showing 1026–1050 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Shimek Forest Dam 4 Lee County | 33 | 1978 | Low | Not Rated |
| Shimek Forest Dam 3 Lee County | 25 | 1966 | Low | Not Rated |
| Shimek Forest Dam 2 Lee County | 23 | 1965 | Low | Not Rated |
| Shimek Forest Dam 1 Lee County | 24 | 1950 | Low | Not Rated |
| Shiloh Dam Washington County | 34 | 1988 | Low | Not Rated |
| Shields & Laubscher Dam Crawford County | 30 | 1970 | Low | Not Rated |
| Sherman Dam Plymouth County | 37 | 1962 | Low | Not Rated |
| Shelton Dam Lucas County | 27 | 1991 | Low | Not Rated |
| Shelton Dam Lucas County | 33 | 1978 | Low | Not Rated |
| Shell Rock Milldam Butler County | 7 | 1928 | Low | Not Rated |
| Sheley/King Dam Taylor County | 28 | 1980 | Low | Not Rated |
| Shelby County Roadgrade Dam 1-81-40 Shelby County | 26 | 1958 | Low | Not Rated |
| Sheckler Dam Jefferson County | 30 | 1965 | Low | Not Rated |
| Shaw Dam Henry County | 27 | 1976 | Low | Not Rated |
| Shaw Dam Fremont County | 30 | 2003 | Low | Not Rated |
| Shaw Dam Des Moines County | 33 | 1969 | Low | Not Rated |
| Shattuck Dam Dallas County | 26 | 2007 | Low | Not Rated |
| Sharp Dam Union County | 21 | 1980 | Low | Not Rated |
| Sharp Dam Crawford County | 28 | 1945 | Low | Not Rated |
| Sharp Dam Crawford County | 30 | 1954 | Low | Not Rated |
| Shaha Dam Ringgold County | 36 | 2003 | Low | Not Rated |
| Seymour Reservoir Dam Wayne County | 24 | 1908 | Low | Fair |
| Seven Thousand Development Dam Jefferson County | 24 | 1995 | Low | Not Rated |
| Seven Cedars Farms Dam Crawford County | 36 | 2001 | Low | Not Rated |
| Sevcik Dam Tama County | 31 | 1995 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.