Miller Lake Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Illinois |
| County | Jefferson |
| Nearest City | MOUNT VERNON |
| River/Stream | TRIB CASEY FORK |
| Coordinates | 38.39671, -88.89326 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 870 ft |
| Year Completed | 1947 (79 years old) |
Storage & Hydraulics
| NID Storage | 3,510 acre-ft |
| Max Storage | 3,510 acre-ft |
| Normal Storage | 1,593 acre-ft |
| Surface Area | 142 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 6,550 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | CITY OF MOUNT VERNON |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 06/02/2025 |
| Emergency Action Plan | Yes |