Iowa has 15 debris control dams. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion.
| # | Dam | County | Height (ft) | Hazard | Condition | Year |
|---|---|---|---|---|---|---|
| 1 | Ahquabi Dredge Spoil Containment Dam 1a | Warren | 39 | Low | Not assessed | 1995 |
| 2 | Ahquabi Dredge Spoil Containment Dam 2a | Warren | 36 | Low | Not assessed | 1995 |
| 3 | Wessel Sediment Basin | Delaware | 35 | Low | Not assessed | 2005 |
| 4 | St. Thomas More Silt Dam | Guthrie | 35 | Low | Not assessed | 1995 |
| 5 | Iowa Noname70 | Harrison | 31 | Low | Not assessed | 1976 |
| 6 | Willow Lake Dam | Harrison | 31 | Low | Not assessed | 1976 |
| 7 | Iowa Noname97 | Johnson | 31 | Low | Not assessed | 1991 |
| 8 | Lake Sugema Silt Control Dam | Van Buren | 26 | Low | Not assessed | 1992 |
| 9 | Badger Lake Dredge Spoil Dam | Webster | 25 | Low | Not assessed | 1996 |
| 10 | Meadow Lake Sediment Detention Dam | Adair | 23 | Low | Not assessed | 2010 |
| 11 | Lake Sugema Silt Dam Site C | Van Buren | 23 | Low | Not assessed | 1994 |
| 12 | Cory Basin Dam | Guthrie | 22 | Significant | Satisfactory | 2016 |
| 13 | Metro West Dam (sw) | Polk | 20 | Low | Not assessed | 1996 |
| 14 | Ahquabi Dredge Spoil Containment Dam 5a | Warren | 19 | Low | Not assessed | 1995 |
| 15 | Union Grove Silt Containment Dam | Tama | 17 | Low | Not assessed | 1990 |