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 2901–2925 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Soap Creek Watershed Site 90-73 Wapello County | 28 | 2011 | Low | Not Rated |
| Soap Creek Watershed Site 90-74 Wapello County | 31 | 2006 | Low | Not Rated |
| Soap Creek Watershed Site 90-75 Wapello County | 30 | 2011 | Low | Not Rated |
| Soap Creek Watershed Site 90-79b Wapello County | 38 | 2007 | Low | Not Rated |
| Soap Creek Watershed Site 90-79c Wapello County | 26 | 2005 | Low | Not Rated |
| Soap Creek Watershed Site 90-83 Wapello County | 35 | 2004 | Low | Not Rated |
| Soap Creek Watershed Site 90-84 Wapello County | 33 | 2004 | Low | Not Rated |
| Soap Creek Watershed Site 90-85 Wapello County | 39 | 2011 | Low | Not Rated |
| Soap Creek Watershed Site 90-87 Wapello County | 23 | 1994 | Low | Not Rated |
| Soap Creek Watershed Site 90-91 Wapello County | 28 | 1994 | Low | Not Rated |
| Soap Creek Watershed Site 90-92 Wapello County | 19 | 1997 | Low | Not Rated |
| Soap Creek Watershed Site 90-95 Wapello County | 27 | 2003 | Low | Not Rated |
| Soap Creek Watershed Site 90-97 Wapello County | 27 | 1997 | Low | Not Rated |
| Sopa Creek Watershed Site 4-40a Appanoose County | 27 | 1998 | Low | Not Rated |
| Sorenson Dam Audubon County | 22 | 1975 | Low | Not Rated |
| South 6th St Stormwater Detention Basin Marshall County | 9 | 1997 | Low | Not Rated |
| South Amana Pond Dam Iowa County | 25 | 1950 | Low | Not Rated |
| South Hungerford 2 Watershed Site 11 Plymouth County | 40 | 1964 | Low | Not Rated |
| South Hungerford 2 Watershed Site 4 Plymouth County | 27 | 1965 | Low | Not Rated |
| South Hungerford 2 Watershed Site 5 Plymouth County | 28 | 1967 | Low | Not Rated |
| South Hungerford 2 Watershed Site 8 Plymouth County | 26 | 1976 | Low | Not Rated |
| South Hungerford 2 Watershed Site 9 Plymouth County | 25 | 1976 | Low | Not Rated |
| South Lake Dam Linn County | 28 | 1993 | Low | Not Rated |
| South Magnolia Watershed Site 1 Harrison County | 57 | 1958 | Low | Not Rated |
| South Magnolia Watershed Site 3 Harrison County | 28 | 1958 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.