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 3551–3575 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Bear Creek Watershed Site 51 Winneshiek County | 30 | 2005 | Low | Not Rated |
| Bear Creek Watershed Site 48 Winneshiek County | 27 | 2005 | Low | Not Rated |
| Bear Creek Watershed Site 47 Winneshiek County | 32 | 2006 | Low | Not Rated |
| Bear Creek Watershed Site 43 Winneshiek County | 35 | 2007 | Low | Not Rated |
| Bear Creek Watershed Site 26 Winneshiek County | 28 | 2011 | Low | Not Rated |
| Bear Creek Watershed Site 25 Winneshiek County | 35 | 2000 | Low | Not Rated |
| Bear Creek Watershed Site 23 Winneshiek County | 32 | 2000 | Low | Not Rated |
| Bear Creek Watershed Site 21 Winneshiek County | 37 | 2011 | Low | Not Rated |
| Beane Dam Tama County | 36 | 1973 | Low | Not Rated |
| Beach Dam Henry County | 33 | 1965 | Low | Not Rated |
| Beach Dam Lee County | 27 | 1965 | Low | Not Rated |
| Beach Dam Henry County | 40 | 1975 | Low | Not Rated |
| Beach Dam Hardin County | 37 | 1967 | Low | Not Rated |
| Bazal Dam Tama County | 25 | 1996 | Low | Not Rated |
| Bax Dam Adams County | 19 | 2013 | Low | Not Rated |
| Baumgartner Dam Delaware County | 13 | 1999 | Low | Not Rated |
| Baudler Dam Adair County | 29 | 2004 | Low | Not Rated |
| Batesole Dam Warren County | 32 | 1996 | Low | Not Rated |
| Batesole Dam Warren County | 23 | 1993 | Low | Not Rated |
| Bateman Dam Mills County | 32 | 1945 | Low | Not Rated |
| Bartlett Hills Lake Dam Mills County | 30 | 1973 | Low | Not Rated |
| Bartlett Dam Crawford County | 31 | 1964 | Low | Not Rated |
| Barr Dam Montgomery County | 40 | 1995 | Low | Not Rated |
| Barnett Dam Guthrie County | 26 | 1965 | Low | Not Rated |
| Barclay Dam Poweshiek County | 25 | 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.