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 3101–3125 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Dane Ridge Watershed Site D-1-4 Crawford County | 49 | 1977 | Low | Not Rated |
| Dane Ridge Watershed Site D-13 Crawford County | 25 | 1978 | Low | Not Rated |
| Dane Ridge Watershed Site D-1-3 Crawford County | 50 | 1971 | Low | Not Rated |
| Dane Ridge Watershed Site D-11 Crawford County | 35 | 1978 | Low | Not Rated |
| Dane Ridge Watershed Site D-10 Crawford County | 49 | 1978 | Low | Not Rated |
| Dane Ridge Watershed Site C-7 Crawford County | 38 | 1977 | Low | Not Rated |
| Dane Ridge Watershed Site C-6 Crawford County | 43 | 1977 | Low | Not Rated |
| Dane Ridge Watershed Site C-5 Crawford County | 46 | 1977 | Low | Not Rated |
| Dane Ridge Watershed Site C-4 Crawford County | 44 | 1971 | Low | Not Rated |
| Dane Ridge Watershed Site C-3 Crawford County | 38 | 1968 | Low | Not Rated |
| Dane Ridge Watershed Site C-2-1 Crawford County | 45 | 1971 | Low | Not Rated |
| Dane Ridge Watershed Site C-2 Crawford County | 39 | 1977 | Low | Not Rated |
| Dane Ridge Watershed Site C-1 Crawford County | 42 | 1978 | Low | Not Rated |
| Dane Ridge Watershed Site C Crawford County | 28 | 1978 | Low | Not Rated |
| Dane Ridge Watershed Site B-4 Crawford County | 43 | 1971 | Low | Not Rated |
| Dane Ridge Watershed Site B-3 Crawford County | 44 | 1971 | Low | Not Rated |
| Dane Ridge Watershed Site B-2 Crawford County | 42 | 1971 | Low | Not Rated |
| Dane Ridge Watershed Site B-1 Crawford County | 36 | 1971 | Low | Not Rated |
| Dane Ridge Watershed Site A-1 Crawford County | 43 | 1967 | Low | Not Rated |
| Dane Ridge Watershed Site A Crawford County | 52 | 1977 | Low | Not Rated |
| Dammann Dam Page County | 24 | 2023 | Low | Not Rated |
| Daly Dam Monona County | 42 | 1985 | Low | Not Rated |
| Dalton Dam Taylor County | 27 | 1984 | Low | Not Rated |
| Dalton Dam Taylor County | 27 | 1988 | Low | Not Rated |
| Dakins Lake Dam (Original Dam) Story County | 24 | 1951 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.