Lake Storey Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Illinois |
| County | Knox |
| Nearest City | SOPERVILLE |
| River/Stream | TRIB SOUTH HENDERSON CREEK |
| Coordinates | 40.98841, -90.40963 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 53 ft |
| Dam Height | 53 ft |
| Dam Length | 770 ft |
| Year Completed | 1942 (84 years old) |
Storage & Hydraulics
| NID Storage | 3,016 acre-ft |
| Max Storage | 3,016 acre-ft |
| Normal Storage | 1,343 acre-ft |
| Surface Area | 109 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 33,710 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | CITY OF GALESBURG |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 10/24/2025 |
| Emergency Action Plan | Yes |