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 1051–1075 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Seran Dam Pottawattamie County | 32 | 2000 | Low | Not Rated |
| Semke Dam Greene County | 46 | 1998 | Low | Not Rated |
| Sels Dam Van Buren County | 23 | 1957 | Low | Not Rated |
| Sells Dam Cherokee County | 43 | 2007 | Low | Not Rated |
| Seley Dam Adair County | 26 | 1990 | Low | Not Rated |
| Seed Savers Dam Winneshiek County | 34 | 2021 | Low | Not Rated |
| Se Des Moines Stormwater Det. Dam #8 Polk County | 23 | 1999 | Low | Satisfactory |
| Se Des Moines Stormwater Det. Dam #5 Polk County | 19 | 1999 | Low | Satisfactory |
| Sedan Wmc Dam C Appanoose County | 8 | 2007 | Low | Not Rated |
| Scott (Darwin) Dam Adair County | 27 | 2013 | Low | Not Rated |
| Scott Dam Decatur County | 28 | 1981 | Low | Not Rated |
| Scott Dam Pocahontas County | 7 | 1999 | Low | Not Rated |
| Scott Co. Park Dam #1 Scott County | 20 | 1964 | Low | Not Rated |
| Scoles Dam Fremont County | 27 | 1961 | Low | Not Rated |
| Scnoenjahn Dam Monona County | 31 | 1963 | Low | Not Rated |
| Schwertley Dam Harrison County | 55 | 1959 | Low | Not Rated |
| Schwartz Dam Wapello County | 38 | 1985 | Low | Not Rated |
| Schwab Dam Decatur County | 20 | 1978 | Low | Not Rated |
| Schultz Dam Shelby County | 29 | 1959 | Low | Not Rated |
| Schultz Dam Lucas County | 24 | 1997 | Low | Not Rated |
| Schultz/Blumer Dam Pottawattamie County | 30 | 1961 | Low | Not Rated |
| Schultice Dam Benton County | 25 | 1979 | Low | Not Rated |
| Schulte Farm Dam Keokuk County | 28 | 1996 | Low | Not Rated |
| Schulte Dam Lee County | 33 | 2000 | Low | Not Rated |
| Schroder Dam Henry County | 46 | 1968 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.