Superior Lake Dam
Low HazardNot Available ConditionEmergency Action Plan: No
Location
| State | Illinois |
| County | Jefferson |
| Nearest City | MOUNT VERNON |
| River/Stream | TRIB BIG MUDDY RIVER |
| Coordinates | 38.41643, -89.04639 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 350 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 729 acre-ft |
| Max Storage | 729 acre-ft |
| Normal Storage | 294 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | OAK SHORES ASSOCIATION |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 06/02/2025 |
| Emergency Action Plan | No |