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 2526–2550 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Rasmussen Dam Polk County | 31 | 2006 | Low | Not Rated |
| Rasmussen Dam Warren County | 28 | 1962 | Low | Not Rated |
| Rasmussen Dam Madison County | 33 | 2020 | Low | Not Rated |
| Rasmussen Dam Story County | 28 | 1964 | Low | Not Rated |
| Rastetter Dam Davis County | 17 | 1997 | Low | Not Rated |
| Rathbun Farms Dam Wayne County | 29 | 1986 | Low | Not Rated |
| Rath Dam Crawford County | 36 | 1977 | Low | Not Rated |
| Rath Dam Crawford County | 32 | 2004 | Low | Not Rated |
| Readhead Dam Story County | 34 | 1997 | Low | Not Rated |
| Reames Dam Madison County | 36 | 1966 | Low | Not Rated |
| Redding Dam Warren County | 26 | 1964 | Low | Not Rated |
| Redfield Dam Dallas County | 9 | 1913 | Low | Not Rated |
| Reed Dam Washington County | 37 | 1970 | Low | Not Rated |
| Reed Dam Washington County | 30 | 1968 | Low | Not Rated |
| Reed Dam Clarke County | 39 | 1999 | Low | Not Rated |
| Reed'S Crossiing Detention Pond Dam Dallas County | 13 | 2004 | Low | Not Rated |
| Reed Subwatershed Site 1-1 Monona County | 33 | 1990 | Low | Not Rated |
| Reed Subwatershed Site 13c-2232 Monona County | 41 | 1967 | Low | Not Rated |
| Reed Subwatershed Sta 37+70 #2 Monona County | 36 | 1966 | Low | Not Rated |
| Reed Subwatershed Sta 41+45 #8 Monona County | 42 | 1966 | Low | Not Rated |
| Reed Subwatershed Sta 45+25 #4 Monona County | 51 | 1966 | Low | Not Rated |
| Reed Subwatershed Sta 46+55 #11 Monona County | 48 | 1966 | Low | Not Rated |
| Reed Subwatershed Sta 46+80 #3 Monona County | 44 | 1966 | Low | Not Rated |
| Reed Subwatershed Sta 71+10 Monona County | 51 | 1966 | Low | Not Rated |
| Reed Subwatershed Sta 88+35 #2 Monona County | 31 | 1966 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.