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 3451–3475 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Wasteney Dam Union County | 24 | 1977 | Low | Not Rated |
| Waterford Pond Dam Polk County | 40 | 1966 | Low | Fair |
| Waterhouse Dam Washington County | 27 | 1977 | Low | Not Rated |
| Waterhouse Dam Washington County | 34 | 1999 | Low | Not Rated |
| Waterhouse Dam Washington County | 29 | 1969 | Low | Not Rated |
| Waterhouse Wetalnd Dam Washington County | 10 | 2003 | Low | Not Rated |
| Waterloo Milldam Black Hawk County | 7 | 1915 | Low | Satisfactory |
| Waterman-Spring Subwtrshd Site 1 O'Brien County | 29 | 1961 | Low | Not Rated |
| Waterman-Spring Subwtrshd Sta 133+55 #2 Cherokee County | 24 | 1961 | Low | Not Rated |
| Waterman-Spring Subwtrshd Sta 29+02 #1 Cherokee County | 33 | 1961 | Low | Not Rated |
| Waubonsie Creek Watershed Site M-3 Mills County | 34 | 1999 | Low | Not Rated |
| Waubonsie Creek Watershed Site M-4 Mills County | 32 | 1998 | Low | Not Rated |
| Waubonsie Creek Watershed Sites M-5 Mills County | 30 | 1999 | Low | Not Rated |
| Waubonsie Cr. Watershed Site 23-1 Mills County | 45 | 1979 | Low | Not Rated |
| Waubonsie Cr. Watershed Site 23-2 Mills County | 54 | 1979 | Low | Not Rated |
| Waubonsie Cr. Watershed Site 3-1 Fremont County | 46 | 1985 | Low | Not Rated |
| Waubonsie Cr. Watershed Site 3-1-1 Fremont County | 44 | 1984 | Low | Not Rated |
| Waubonsie Cr. Watershed Site 3-11 Mills County | 66 | 1989 | Low | Not Rated |
| Waubonsie Cr. Watershed Site 31-1 Mills County | 50 | 1983 | Low | Not Rated |
| Waubonsie Cr. Watershed Site 3-1-2 Fremont County | 47 | 1984 | Low | Not Rated |
| Waubonsie Cr. Watershed Site 3-1-3 Fremont County | 42 | 1984 | Low | Not Rated |
| Waubonsie Cr. Watershed Site 3-2 Mills County | 51 | 1993 | Low | Not Rated |
| Waubonsie Cr. Watershed Site 3-5 Mills County | 51 | 1989 | Low | Not Rated |
| Waubonsie Cr. Watershed Site 3-6 Mills County | 50 | 1989 | Low | Not Rated |
| Waubonsie Cr. Watershed Site 36-1 Mills County | 45 | 1983 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.