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 2176–2200 of 4,124
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Langenfield/Kolln Dam Crawford County | 32 | 1975 | Low | Not Rated |
| Langenfeld - Heiden Dam Crawford County | 44 | 2000 | Low | Not Rated |
| Lange Dam Madison County | 33 | 2021 | Low | Not Rated |
| Lamberts Dam Lucas County | 21 | 1997 | Low | Not Rated |
| Lambert Dam Lucas County | 21 | 1999 | Low | Not Rated |
| Lakewood Hills Dam Black Hawk County | 18 | 1967 | Significant | Satisfactory |
| Lakewood Dredge Spoil Dam Warren County | 30 | 1990 | Low | Not Rated |
| Lake Wapello Dam Davis County | 57 | 1934 | Significant | Satisfactory |
| Lake Sundown Dam Appanoose County | 51 | 1976 | Significant | Satisfactory |
| Lake Sugema Silt Dam Site C Van Buren County | 23 | 1994 | Low | Not Rated |
| Lake Sugema Silt Control Dam Van Buren County | 26 | 1992 | Low | Not Rated |
| Lake Sugema Dam Van Buren County | 50 | 1992 | High | Satisfactory |
| Lake Smith Dam Kossuth County | 21 | 1965 | Significant | Satisfactory |
| Lakeside Development Dam Linn County | 45 | 2005 | Significant | Satisfactory |
| Lake Ponderosa Dam Poweshiek County | 50 | 1969 | High | Satisfactory |
| Lake Point Dam Dallas County | 20 | 1992 | Low | Not Rated |
| Lake Panorama Dam Guthrie County | 70 | 1969 | Significant | Satisfactory |
| Lake Pahoja Dam Lyon County | 50 | 1974 | Significant | Satisfactory |
| Lake Ohana Dam #1 Mills County | 46 | 2007 | Significant | Poor |
| Lake of Three Fires Dam Taylor County | 32 | 1967 | Significant | Satisfactory |
| Lake of Three Fire Dredge Spoil Contianment Dam Taylor County | 35 | 2003 | Low | Not Rated |
| Lake of The Hills Dam Scott County | 48 | 1972 | High | Satisfactory |
| Lake Oelwein Dam Fayette County | 16 | 1908 | Low | Not Rated |
| Lake Morris Wetland Dam Site 1 Lucas County | 7 | 1998 | Low | Not Rated |
| Lake Morris Erosion Control Site 8 Lucas County | 21 | 1972 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.