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 3976–4000 of 4,124
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Bacon Creek Watershed Site H-1-3 Woodbury County | 40 | 1981 | Significant | Satisfactory |
| Bacon Creek Watershed Site H-1-2 Woodbury County | 40 | 1981 | Significant | Not Rated |
| Bacon Creek Watershed Site H-1-1 Woodbury County | 40 | 1981 | Significant | Fair |
| Bacon Creek Watershed Site H-1 Woodbury County | 54 | 1984 | Significant | Satisfactory |
| Bacon Creek Watershed Site F-1 Woodbury County | 33 | 1981 | Low | Not Rated |
| Bacon Creek Watershed Site C-1 Woodbury County | 41 | 1976 | High | Satisfactory |
| Bacon Creek Watershed Site A-3-1 Woodbury County | 50 | 1978 | High | Satisfactory |
| Bacon Creek Watershed Site A-3 Woodbury County | 69 | 1978 | High | Satisfactory |
| Bacon Creek Watershed Site A-2-6 Woodbury County | 35 | 1978 | Significant | Not Rated |
| Bacon Creek Watershed Site A-2-4 Woodbury County | 51 | 1979 | High | Satisfactory |
| Bacon Creek Watershed Site A-2-3 Woodbury County | 47 | 1978 | Significant | Poor |
| Bacon Creek Watershed Site A-2-2 Woodbury County | 51 | 1978 | Significant | Fair |
| Bacon Creek Watershed Site A-2-1 Woodbury County | 55 | 1978 | Significant | Poor |
| Bacon Creek Watershed Site A-2 Woodbury County | 64 | 1978 | Low | Not Rated |
| Bacon Creek Watershed Site A-1-1 Woodbury County | 36 | 1978 | High | Fair |
| Bacon Creek Watershed Site A-1 Woodbury County | 58 | 1978 | Low | Not Rated |
| Backes Dam Benton County | 26 | 1967 | Low | Not Rated |
| Backbone Dam Delaware County | 33 | 1938 | Significant | Satisfactory |
| Bachman Dam Clarke County | 27 | 2013 | Low | Not Rated |
| Baack Dam Warren County | 27 | 1999 | Low | Not Rated |
| Ayers Dam Madison County | 37 | 1988 | Low | Not Rated |
| Axtell Dam Fremont County | 24 | 1960 | Low | Not Rated |
| Axtell Dam Jasper County | 31 | 1972 | Low | Not Rated |
| Audubon Fn-44-3(S)-21-05 Audubon County | 25 | 1977 | Low | Not Rated |
| Atwell Dam Lucas County | 30 | 1997 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.