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 3151–3175 of 3,759
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Croy Subwatershed Site 2530 Monona County | 46 | 1951 | Low | Not Rated |
| Croy Subwatershed Site 23700 Monona County | 37 | 1951 | Low | Not Rated |
| Croy Subwatershed Site 22200 Monona County | 28 | 1951 | Low | Not Rated |
| Croy Subwatershed Site 2200 Monona County | 32 | 1951 | Low | Not Rated |
| Croy Subwatershed Site 1-1292 Monona County | 36 | 1952 | Low | Not Rated |
| Crow Dam Warren County | 32 | 1960 | Low | Not Rated |
| Crooked Creek Watershed Site 7a Audubon County | 31 | 1971 | Low | Not Rated |
| Crooked Creek Watershed Site 6a-1 Audubon County | 36 | 1971 | Low | Not Rated |
| Crooked Creek Watershed Site 5-C Cass County | 29 | 1971 | Low | Not Rated |
| Crooked Creek Watershed Site 11-C Cass County | 35 | 1971 | Low | Not Rated |
| Crittenden Dam Union County | 29 | 1977 | Low | Not Rated |
| Crile Dam Henry County | 26 | 2004 | Low | Not Rated |
| Creti Dam Crawford County | 28 | 2000 | Low | Not Rated |
| Creswell Dam Woodbury County | 32 | 1964 | Low | Not Rated |
| Crestmor Golf Club Dam Union County | 20 | 1994 | Low | Not Rated |
| Cresswell Dam Woodbury County | 33 | 1954 | Low | Not Rated |
| Craword CO Roadgrade Dam 22-84-38 Crawford County | 25 | 2003 | Low | Not Rated |
| Crawford Dam Washington County | 27 | 2001 | Low | Not Rated |
| Crawford Dam Jefferson County | 24 | 1962 | Low | Not Rated |
| Crawford Dam Cherokee County | 29 | 1979 | Low | Not Rated |
| Crawford Dam Henry County | 30 | 1981 | Low | Not Rated |
| Crawford Creek Subwatershed Site M-2 Ida County | 40 | 1976 | Low | Not Rated |
| Crawford Creek Subwatershed Site M-1 Ida County | 33 | 1976 | Low | Not Rated |
| Crawford Creek Subwatershed Site 4-1 Ida County | 39 | 1976 | Low | Not Rated |
| Crawford Creek Subwatershed Site 3-1 Ida County | 37 | 1976 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.