Superior 4 Dam
Low HazardNot Available ConditionEmergency Action Plan: No
Location
| State | Illinois |
| County | Macoupin |
| Nearest City | WILSONVILLE |
| River/Stream | WEST FORK CAHOKIA CREEK |
| Coordinates | 39.05805, -89.86085 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | UNKNOWN |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 01/26/1988 |
| Emergency Action Plan | No |