Spoon Lake Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Illinois |
| County | Knox |
| Nearest City | WILLIAMSFIELD |
| River/Stream | TRIB SPOON RIVER |
| Coordinates | 40.95084, -90.12555 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 74 ft |
| Dam Height | 74 ft |
| Dam Length | 1,128 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 19,500 acre-ft |
| Max Storage | 19,500 acre-ft |
| Normal Storage | 13,250 acre-ft |
| Surface Area | 610 acres |
| Drainage Area | 17 sq mi |
| Max Discharge | 2,870 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | OAK RUN PROPERTY OWNERS ASSOCIATION |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 09/09/2025 |
| Emergency Action Plan | Yes |