Mississippi River Lock and Dam 9
Wisconsin — Allamakee County
Location
| State | Wisconsin |
| County | Allamakee |
| Coordinates | 43.21223, -91.10015 |
Physical Characteristics
| NID Height | 46 ft |
| Dam Height | 18 ft |
| Dam Length | 9,087 ft |
| NID Storage | 470,000 acre-ft |
| Max Storage | 470,000 acre-ft |
| Surface Area | 29,125 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Not Available |
| EAP Status | — |
| Last Inspection | — |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1937 |
| Primary Purpose | Navigation |
| Dam Type | — |
| Owner Type | — |
| Owner | USACE - St. Paul District |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.