Mississippi River Lock And Dam 20
Significant HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Missouri |
| County | Adams |
| Nearest City | CANTON |
| River/Stream | MISSISSIPPI RIVER |
| Coordinates | 40.14410, -91.51066 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 37 ft |
| Dam Length | 2,604 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 58,000 acre-ft |
| Max Storage | 58,000 acre-ft |
| Surface Area | 7,542 acres |
| Drainage Area | 134,300 sq mi |
| Max Discharge | 510,000 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Navigation |
| Owner | USACE - Rock Island District |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 06/15/2021 |
| Emergency Action Plan | Yes |