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 3226–3250 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Turkey Cr Watershed Site 42 Cass County | 31 | 1974 | Low | Not Rated |
| Turkey Cr Watershed Site 47 Cass County | 34 | 1978 | Low | Not Rated |
| Turkey Cr Watershed Site 49 Cass County | 29 | 1967 | Low | Not Rated |
| Turkey Cr Watershed Site 49-A Cass County | 36 | 1967 | Low | Not Rated |
| Turkey Cr Watershed Site 53-1 Cass County | 26 | 1969 | Low | Not Rated |
| Turkey Cr Watershed Site 53-2 Cass County | 23 | 1980 | Low | Not Rated |
| Turkey Cr Watershed Site 53-3 Cass County | 38 | 1967 | Low | Not Rated |
| Turkey Cr Watershed Site 53-6 Cass County | 37 | 1967 | Low | Not Rated |
| Turkey Cr Watershed Site 58 Cass County | 32 | 1969 | Low | Not Rated |
| Turkey Cr Watershed Site 58-3 Cass County | 32 | 1969 | Low | Not Rated |
| Turkey Cr Watershed Site 62-5 Cass County | 27 | 1990 | Low | Not Rated |
| Turner Dam Crawford County | 42 | 1958 | Low | Not Rated |
| Turner Dam Page County | 33 | 2024 | Low | Not Rated |
| Turner Dam Warren County | 29 | 1977 | Low | Not Rated |
| Tuscany Pond Dam Polk County | 20 | 1970 | Low | Not Rated |
| Tweedy Dam Dallas County | 32 | 1982 | Low | Not Rated |
| Tweedy Farms Dam Lee County | 27 | 1994 | Low | Not Rated |
| Twelve Mile Creek Watershed Site 18 Union County | 36 | 1986 | Low | Not Rated |
| Twelve Mile Creek Watershed Site 23 Union County | 33 | 1988 | Low | Not Rated |
| Twelve Mile Creek Watershed Site 27 Union County | 31 | 1986 | Low | Not Rated |
| Twelve Mile Creek Watershed Site 30 Union County | 35 | 1986 | Low | Not Rated |
| Twelve Mile Creek Watershed Site 35-2 Union County | 30 | 1986 | Low | Not Rated |
| Twelve Mile Creek Watershed Site 36 Union County | 31 | 2003 | Low | Not Rated |
| Twelve Mile Creek Watershed Site 40-1 Union County | 33 | 1993 | Low | Not Rated |
| Twelve Mile Creek Watershed Site 46 Union County | 28 | 1993 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.