Mississippi River Lock and Dam 12
Iowa — Jo Daviess County — MISSISSIPPI RIVER
Location
| State | Iowa |
| County | Jo Daviess |
| River | MISSISSIPPI RIVER |
| Coordinates | 42.26124, -90.42116 |
Physical Characteristics
| NID Height | 44 ft |
| Dam Height | — |
| Dam Length | 8,577 ft |
| NID Storage | 92,000 acre-ft |
| Max Storage | 92,000 acre-ft |
| Surface Area | 10,500 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | April 9, 2024 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1938 |
| Primary Purpose | Navigation |
| Dam Type | Concrete |
| Owner Type | Federal |
| Owner | USACE - Rock Island District |
| Other Name | Pool 12 |
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.