Mississippi River Lock And Dam 11
Significant HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Iowa |
| County | Dubuque |
| Nearest City | DUBUQUE |
| River/Stream | MISSISSIPPI RIVER |
| Coordinates | 42.54014, -90.64463 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 43 ft |
| Dam Length | 5,130 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 170,000 acre-ft |
| Max Storage | 170,000 acre-ft |
| Surface Area | 19,613 acres |
| Drainage Area | 81,600 sq mi |
| Max Discharge | 326,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Navigation |
| Owner | USACE - Rock Island District |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 06/04/2024 |
| Emergency Action Plan | Yes |