East Fork Lake Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Illinois |
| County | Richland |
| Nearest City | OLNEY |
| River/Stream | EAST FORK FOX RIVER |
| Coordinates | 38.76425, -88.07974 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 84 ft |
| Dam Height | 84 ft |
| Dam Length | 6,500 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 22,680 acre-ft |
| Max Storage | 22,680 acre-ft |
| Normal Storage | 12,460 acre-ft |
| Surface Area | 930 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 20,061 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | CITY OF OLNEY |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 08/28/2025 |
| Emergency Action Plan | Yes |