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 2651–2675 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Sandven Dam Humboldt County | 36 | 1988 | Low | Not Rated |
| Sandy Dam Lucas County | 31 | 1986 | Low | Not Rated |
| Sanford Dam Warren County | 23 | 1992 | Low | Not Rated |
| Sargent Dam Clarke County | 29 | 1993 | Low | Not Rated |
| Sargent Dam Davis County | 24 | 1976 | Low | Not Rated |
| Savery/Welliver Dam Monona County | 57 | 1966 | Low | Fair |
| Sawgrass Park Dam Polk County | 27 | 1980 | Low | Fair |
| Saxton Dam Decatur County | 29 | 1987 | Low | Not Rated |
| Saxton Dam #2 Decatur County | 35 | 1987 | Low | Not Rated |
| Saxton Dam #3 Decatur County | 28 | 1987 | Low | Not Rated |
| Saylorville Wildlife Area Dam Dallas County | 34 | — | Low | Not Rated |
| Schaben Dam Harrison County | 48 | 1970 | Low | Not Rated |
| Schacherer Dam Emmet County | 33 | 1979 | Low | Not Rated |
| Schaefer Dam Wayne County | 29 | 1970 | Low | Not Rated |
| Schaefer Dam Lucas County | 26 | 1985 | Low | Not Rated |
| Schafer Dam Adams County | 28 | 2019 | Low | Not Rated |
| Schaper Dam Warren County | 28 | 2002 | Low | Not Rated |
| Scharnberg Dam Warren County | 41 | 2007 | Low | Not Rated |
| Scheuermann Dam Mahaska County | 24 | 1968 | Low | Not Rated |
| Schildberg Dam Adair County | 48 | 1952 | Low | Not Rated |
| Schilling Dam Lucas County | 32 | 1965 | Low | Not Rated |
| Schlegel Dam Davis County | 21 | 1970 | Low | Not Rated |
| Schlensig Dam Crawford County | 41 | 1970 | Low | Not Rated |
| Schlies Dam Monona County | 36 | 1997 | Low | Not Rated |
| Schmidt Dam Washington County | 21 | 2003 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.