One Horse Gap
Illinois — Pope County — TR-GRAND PIERRE
Location
| State | Illinois |
| County | Pope |
| River | TR-GRAND PIERRE |
| Coordinates | 37.51757, -88.44607 |
Physical Characteristics
| NID Height | 36 ft |
| Dam Height | 30 ft |
| Dam Length | 443 ft |
| NID Storage | 304 acre-ft |
| Max Storage | 304 acre-ft |
| Surface Area | 29 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Fair |
| EAP Status | Not Required |
| Last Inspection | August 1, 2019 |
| Inspection Frequency | — |
Dam Information
| Year Completed | 1973 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | Federal |
| Owner | USDA FS |
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.