Mississippi River Locks And Dam 27
Significant HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Missouri |
| County | Madison |
| Nearest City | GRANITE CITY |
| River/Stream | MISSISSIPPI RIVER |
| Coordinates | 38.70293, -90.18096 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 3,240 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Normal Storage | 50 acre-ft |
| Max Discharge | 1,300,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Navigation |
| Owner | USACE - St. Louis District |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 05/14/2024 |
| Emergency Action Plan | Yes |