Thunderbird Lake Dam
Illinois — Jersey County — TR- LITTLE PIASA CREEK
Location
| State | Illinois |
| County | Jersey |
| River | TR- LITTLE PIASA CREEK |
| Coordinates | 39.03885, -90.16686 |
Physical Characteristics
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 300 ft |
| NID Storage | 48 acre-ft |
| Max Storage | 48 acre-ft |
| Surface Area | 4 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Not Available |
| EAP Status | No |
| Last Inspection | June 23, 2025 |
| Inspection Frequency | — |
Dam Information
| Year Completed | 1965 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | UNKNOWN;UNKNOWN |
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.