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 2251–2275 of 4,124
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Kopete Farms Dam Taylor County | 26 | 1971 | Low | Not Rated |
| Kopecky Dam Fremont County | 31 | 2005 | Low | Not Rated |
| Koop Dam Butler County | 28 | 1990 | Low | Not Rated |
| Kolls Dam Jasper County | 29 | 1959 | Low | Not Rated |
| Koethe Dam #2 Warren County | 26 | 2001 | Low | Not Rated |
| Koekenhoff Dam Emmet County | 13 | 2006 | Low | Not Rated |
| Koch Dam Clarke County | 25 | 1976 | Low | Not Rated |
| Koch Dam Clarke County | 28 | 1997 | Low | Not Rated |
| Knutson Dam Hamilton County | 9 | 2022 | Low | Not Rated |
| Knutsen Dam Madison County | 29 | 1990 | Low | Not Rated |
| Knoxville Pond Dam Marion County | 31 | 1961 | Low | Not Rated |
| Knowler/Mc Nabb Dam Keokuk County | 26 | 1981 | Low | Not Rated |
| Knop Dam Ida County | 34 | 1995 | Low | Not Rated |
| Kness Dam Monroe County | 36 | 1989 | Low | Not Rated |
| Kness Dam Monroe County | 38 | 1987 | Low | Not Rated |
| Knau Dam Page County | 27 | 2022 | Low | Not Rated |
| Knapp Farms Dam Taylor County | 27 | 2002 | Low | Not Rated |
| Knapp Dam Davis County | 25 | 1979 | Low | Not Rated |
| Knapp Dam Ringgold County | 29 | 1959 | Low | Not Rated |
| Knapp Dam Fremont County | 34 | 1971 | Low | Not Rated |
| Knapp Dam Davis County | 33 | 1979 | Low | Not Rated |
| Knapp Dam Wayne County | 26 | 1991 | Low | Not Rated |
| Klyn Dam Wapello County | 28 | 2016 | Low | Not Rated |
| Klum Lake Dam Louisa County | 9 | 1980 | Low | Not Rated |
| Klopping Dam Jasper County | 31 | 1961 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.