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 3751–3759 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Adam Dam Jefferson County | 32 | 1997 | Low | Not Rated |
| Adam Dam Jefferson County | 21 | 1999 | Low | Not Rated |
| Adam CO Cons Bd Dam Adams County | 25 | 2002 | Low | Not Rated |
| Adam/Brey Dam Davis County | 23 | 1974 | Low | Not Rated |
| Adam and Lindsay Smith Dam Davis County | 27 | 2016 | Low | Not Rated |
| Adair/Finnegan Dam Guthrie County | 25 | 1989 | Low | Not Rated |
| Acheson Dam Decatur County | 32 | 1995 | Low | Not Rated |
| Abild Dam Warren County | 16 | 1967 | Low | Not Rated |
| Abell Dam Union County | 32 | 1987 | Low | Not Rated |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.