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 551–575 of 4,124
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Christensen Dam Crawford County | 30 | 1999 | Low | Not Rated |
| Christensen Dam Humboldt County | 32 | 1985 | Low | Not Rated |
| Christensen Dam Page County | 24 | 2005 | Low | Not Rated |
| Cibula Dam Tama County | 27 | 2003 | Low | Not Rated |
| Cipco Silt Dam Guthrie County | 51 | 1986 | Low | Satisfactory |
| Claiser Dam Union County | 29 | 1974 | Low | Not Rated |
| Clarinda Mhi Dam Page County | 34 | 1961 | Low | Not Rated |
| Clark Dam Woodbury County | 39 | 1971 | Low | Not Rated |
| Clark Dam Crawford County | 28 | 2004 | Low | Not Rated |
| Clark Dam Decatur County | 32 | 1988 | Low | Not Rated |
| Clark Dam Iowa County | 22 | 2023 | Low | Not Rated |
| Clarke Co. Roadgrade Dam 8-73-25 Clarke County | 43 | 1992 | Low | Not Rated |
| Clarks Lake Dam Jasper County | 23 | 1962 | Low | Not Rated |
| Clark Subwatershd Sta22+82 Main Gully Cherokee County | 29 | 1956 | Low | Not Rated |
| Clark Subwatershed Gully 7 Sta70+00 Cherokee County | 37 | 1956 | Low | Not Rated |
| Clausen Dam Clinton County | 29 | 1975 | Low | Not Rated |
| Clements Dam Polk County | 26 | 1964 | Low | Not Rated |
| Clermont Milldam Fayette County | 16 | 1925 | Low | Not Rated |
| Cleveland Dam Harrison County | 41 | 2011 | Low | Not Rated |
| Clevenger Dam Warren County | 30 | 2000 | Low | Not Rated |
| Clint Means Dam Taylor County | 33 | 2021 | Low | Not Rated |
| Clinton Dam Crawford County | 22 | 2008 | Low | Not Rated |
| Clinton Flood Control - First Congregational Church Dam Clinton County | 16 | 1987 | High | Satisfactory |
| Clinton Flood Control - May Pond Dam Clinton County | 21 | 1988 | High | Fair |
| Clinton Flood Control - Springvalley Pond Dam Clinton County | 21 | 1994 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.