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 |
|---|---|---|---|---|
| Freestone Dam Dallas County | 36 | 2000 | Low | Not Rated |
| Freiler Dam Guthrie County | 22 | 1968 | Low | Not Rated |
| Freiler Dam Guthrie County | 27 | 1964 | Low | Not Rated |
| Frette Dam Dallas County | 32 | 1990 | Low | Not Rated |
| Frey Dam Taylor County | 27 | 1990 | Low | Not Rated |
| Fridley Dam Warren County | 28 | 2001 | Low | Not Rated |
| Fridley Dam Warren County | 40 | 1977 | Low | Not Rated |
| Friesen Dam Ringgold County | 31 | 1976 | Low | Not Rated |
| Fritz Dam Des Moines County | 26 | 1985 | Low | Not Rated |
| Fuller Green Valley Wetland Dam Washington County | 8 | 1995 | Low | Not Rated |
| Fulton Dam Lucas County | 30 | 1979 | Low | Not Rated |
| Fulton Dam Washington County | 24 | 2008 | Low | Not Rated |
| F.W.Kent Park Dam Johnson County | 34 | 1972 | Low | Not Rated |
| G-3 Pond Clinton County | 27 | 1971 | Low | Not Rated |
| Gallup Subwatershed 1-1200 Monona County | 33 | 1954 | Low | Not Rated |
| Gallup Subwatershed 4-3538 Monona County | 28 | 1954 | Low | Not Rated |
| Gannon Dam Jasper County | 20 | 1970 | Low | Not Rated |
| Gannon Dam Jasper County | 30 | 1970 | Low | Not Rated |
| Gannon Dam Jasper County | 27 | 1969 | Low | Not Rated |
| Gannon Dam Jasper County | 29 | 1971 | Low | Not Rated |
| Gant Creek Watershed Site A-2 Plymouth County | 40 | 1969 | Low | Not Rated |
| Gant Creek Watershed Site A-4 Plymouth County | 34 | 1969 | Low | Not Rated |
| Gant Creek Watershed Site A-5 Plymouth County | 58 | 1969 | Low | Not Rated |
| Gant Creek Watershed Site A-6 Plymouth County | 24 | 1969 | Low | Not Rated |
| Gant Creek Watershed Site A-7 Plymouth County | 37 | 1969 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.