Arrowhead Lake Dam
Illinois — Williamson County — TRIB LAKE CREEK
Location
| State | Illinois |
| County | Williamson |
| River | TRIB LAKE CREEK |
| Coordinates | 37.82706, -88.90764 |
Physical Characteristics
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 840 ft |
| NID Storage | 355 acre-ft |
| Max Storage | 355 acre-ft |
| Surface Area | 39 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Not Available |
| EAP Status | No |
| Last Inspection | October 18, 2023 |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | 1963 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | CITY OF JOHNSTON CITY |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.