New Gillespie Lake Dam
Significant HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Illinois |
| County | Macoupin |
| Nearest City | MACOUPIN STATION |
| River/Stream | DRY FORK MACOUPIN CREEK |
| Coordinates | 39.14528, -89.88889 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 41 ft |
| Dam Height | 41 ft |
| Dam Length | 868 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 4,975 acre-ft |
| Max Storage | 4,975 acre-ft |
| Normal Storage | 2,325 acre-ft |
| Surface Area | 216 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 12,283 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF GILLESPIE |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 08/12/2023 |
| Emergency Action Plan | Yes |