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 3301–3325 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Upper Locust Watershed Site L-47 Wayne County | 25 | 1999 | Low | Not Rated |
| Upper Locust Watershed Site L-48 Wayne County | 23 | 1999 | Low | Not Rated |
| Upper Locust Watershed Site L-5 Wayne County | 27 | 1999 | Low | Not Rated |
| Upper Locust Watershed Site L-50 Wayne County | 25 | 1999 | Low | Not Rated |
| Upper Pine Lake Dredge Spoil Dam Hardin County | 35 | 1998 | Low | Not Rated |
| Urban America Development Dam Polk County | 31 | 1966 | Low | Not Rated |
| Utesch Dam Cherokee County | 33 | 1996 | Low | Not Rated |
| Utt Dam Davis County | 24 | 2002 | Low | Not Rated |
| Utt Dam Davis County | 23 | 2016 | Low | Not Rated |
| Vail Dam Warren County | 37 | 1986 | Low | Not Rated |
| Valdez Dam Wayne County | 25 | 2002 | Low | Not Rated |
| Valley View Heights Dam Johnson County | 29 | 1976 | Low | Not Rated |
| Vanatta Dam Fremont County | 38 | 2003 | Low | Not Rated |
| Van Buren County Roadgrade 14-70-10 Van Buren County | 29 | 2003 | Low | Not Rated |
| Van Buren County Roadgrade Dam 10-70-11 Van Buren County | 38 | 1996 | Low | Not Rated |
| Van Buren County Roadgrade Dam 25-68-9 Van Buren County | 37 | 1993 | Low | Not Rated |
| Van Buren County Roadgrade Dam 28-68-9 Van Buren County | 28 | 1982 | Low | Not Rated |
| Van Buren County Roadgrade Dam 4-68-11 Van Buren County | 34 | 1987 | Low | Not Rated |
| Van Clark Dam Warren County | 28 | 1975 | Low | Not Rated |
| Van Dalen Dam Monroe County | 30 | 1996 | Low | Not Rated |
| Van Den Broek Dam Marion County | 30 | 2004 | Low | Not Rated |
| Vander Linden Dam Warren County | 31 | 1970 | Low | Not Rated |
| Vander Molen Dam Jasper County | 25 | 1980 | Low | Not Rated |
| Vander Molen Dam Mahaska County | 27 | 1974 | Low | Not Rated |
| Vanderpool Dam Warren County | 28 | 1995 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.