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 3626–3650 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Bacon Creek Watershed Site M-1 Plymouth County | 32 | 1976 | Low | Not Rated |
| Bacon Creek Watershed Site L-3 Woodbury County | 46 | 1976 | Low | Not Rated |
| Bacon Creek Watershed Site L-2 Woodbury County | 25 | 1976 | Low | Not Rated |
| Bacon Creek Watershed Site L-1 Plymouth County | 53 | 1976 | Low | Not Rated |
| Bacon Creek Watershed Site K-1 Woodbury County | 39 | 1976 | Low | Not Rated |
| Bacon Creek Watershed Site J-4 Woodbury County | 20 | 1985 | Low | Not Rated |
| Bacon Creek Watershed Site J-2 Woodbury County | 50 | 1988 | Low | Not Rated |
| Bacon Creek Watershed Site H-2 Woodbury County | 33 | 1984 | Low | Not Rated |
| Bacon Creek Watershed Site F-1 Woodbury County | 33 | 1981 | Low | Not Rated |
| Bacon Creek Watershed Site A-2 Woodbury County | 64 | 1978 | Low | Not Rated |
| Bacon Creek Watershed Site A-1 Woodbury County | 58 | 1978 | Low | Not Rated |
| Backes Dam Benton County | 26 | 1967 | Low | Not Rated |
| 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 |
| Attril Dam Plymouth County | 32 | 1962 | Low | Not Rated |
| Assman #4 Grade Stabilization Structure Crawford County | 39 | 2010 | Low | Not Rated |
| Ashmore Dam Adair County | 25 | 1996 | Low | Not Rated |
| Artesian Lake Dam Carroll County | 12 | 1930 | Low | Not Rated |
| Arterburn/Kenealy Dam Pottawattamie County | 37 | 1961 | Low | Not Rated |
| Arrowhead Lake Dam Pottawattamie County | 47 | 1959 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.