Twin Lakes Lane South Lake Dam
Low HazardNot Available ConditionEmergency Action Plan: No
Location
| State | Illinois |
| County | Madison |
| Nearest City | MASCOUTAH |
| River/Stream | TRIB SILVER CREEK |
| Coordinates | 38.79984, -89.87457 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 174 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 148 acre-ft |
| Max Storage | 148 acre-ft |
| Normal Storage | 80 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | JOHN JONES |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 08/20/2025 |
| Emergency Action Plan | No |