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 2151–2175 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Mitch England Dam Ringgold County | 27 | 2016 | Low | Not Rated |
| Mleynek Dam Guthrie County | 31 | 1983 | Low | Not Rated |
| Moeller Dam Crawford County | 34 | 1960 | Low | Not Rated |
| Mohr Dam Crawford County | 21 | 2001 | Low | Not Rated |
| Mohrfeld Dam Lee County | 23 | 1968 | Low | Not Rated |
| Mohr & Sharp Dam Van Buren County | 32 | 2001 | Low | Not Rated |
| Molkenthin Dam Keokuk County | 30 | 1975 | Low | Not Rated |
| Moller/Frahm Dam Crawford County | 27 | 1974 | Low | Not Rated |
| Molseed Dam Crawford County | 24 | 2001 | Low | Not Rated |
| Monday Dam Ringgold County | 26 | 2002 | Low | Not Rated |
| Monona County Roadgrade Dam 13-83-43 Monona County | 34 | 1965 | Low | Not Rated |
| Monona County Roadgrade Dam 23-82-43 Monona County | 29 | 1988 | Low | Not Rated |
| Monona County Roadgrade Dam 5-82-42 Monona County | 45 | 1967 | Low | Not Rated |
| Monroe CO Roadgrade Dam 29-72-18 Monroe County | 28 | 1983 | Low | Not Rated |
| Monroe CO Roadgrade Dam Site 35.4.10 Monroe County | 35 | 1985 | Low | Not Rated |
| Monroe CO Roadgrade Site 5.4.0 Monroe County | 26 | 1984 | Low | Not Rated |
| Monroe CO Roadgrade Site 7.5.4 Monroe County | 30 | 1985 | Low | Not Rated |
| Montgomery Dam Cherokee County | 36 | 1961 | Low | Not Rated |
| Monticello Milldam Jones County | 12 | 1914 | Low | Not Rated |
| Montie L Hammond Estate Dam Jasper County | 31 | 2014 | Low | Not Rated |
| Moore Dam Henry County | 32 | 1996 | Low | Not Rated |
| Moore Dam Appanoose County | 25 | 1980 | Low | Not Rated |
| Moore Dam Davis County | 21 | 1990 | Low | Not Rated |
| Moore Subwatershed Site M-10130 Monona County | 37 | 1955 | Low | Not Rated |
| Moore Subwatershed Site M-10180 Monona County | 44 | 1955 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.