Lake Murphysboro Dam
Significant HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Illinois |
| County | Jackson |
| Nearest City | SAND RIDGE-OFFSTREAM |
| River/Stream | TRIB BIG MUDDY RIVER |
| Coordinates | 37.77367, -89.38131 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 46 ft |
| Dam Height | 46 ft |
| Dam Length | 590 ft |
| Year Completed | 1947 (79 years old) |
Storage & Hydraulics
| NID Storage | 4,281 acre-ft |
| Max Storage | 4,281 acre-ft |
| Normal Storage | 2,375 acre-ft |
| Surface Area | 166 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 9,171 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | ILLINOIS DEPARTMENT OF NATURAL RESOURCES |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 11/07/2024 |
| Emergency Action Plan | Yes |