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 2701–2725 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Fritz Dam Des Moines County | 26 | 1985 | Low | Not Rated |
| Friesen Dam Ringgold County | 31 | 1976 | Low | Not Rated |
| Fridley Dam Warren County | 28 | 2001 | Low | Not Rated |
| Fridley Dam Warren County | 40 | 1977 | Low | Not Rated |
| Frey Dam Taylor County | 27 | 1990 | Low | Not Rated |
| Frette Dam Dallas County | 32 | 1990 | Low | Not Rated |
| Freiler Dam Guthrie County | 27 | 1964 | Low | Not Rated |
| Freiler Dam Guthrie County | 22 | 1968 | Low | Not Rated |
| Freestone Dam Dallas County | 36 | 2000 | Low | Not Rated |
| Freese Dam Wayne County | 27 | 1975 | Low | Not Rated |
| Frazier Dam Lucas County | 26 | 1987 | Low | Not Rated |
| Fraser Milldam Boone County | 7 | 1911 | Low | Not Rated |
| Frank & Udell Dam Plymouth County | 49 | 1976 | Low | Not Rated |
| Frank Riley Dam Clarke County | 32 | 2017 | Low | Not Rated |
| Franklin Dam Van Buren County | 29 | 1986 | Low | Not Rated |
| Frank Dam Adair County | 31 | 1989 | Low | Not Rated |
| Francy Site 3 Henry County | 29 | 2010 | Low | Not Rated |
| Francois Dam Delaware County | 15 | 1998 | Low | Not Rated |
| Framton Farms -Site 2 Dam Madison County | 35 | 1999 | Low | Not Rated |
| Fox Run Development - Upper Dam Mahaska County | 25 | 1996 | Low | Not Rated |
| Four-H Recreation Dam Louisa County | 35 | 1977 | Low | Not Rated |
| Four D Wetland Dam Iowa County | 10 | 2006 | Low | Not Rated |
| Four D Partnership Dam Jackson County | 14 | 1999 | Low | Not Rated |
| Four Corners Dam Carroll County | 25 | 1999 | Low | Not Rated |
| Foth Dam Humboldt County | 13 | 2021 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.