Tiskilwa Structure 1 Dam
Illinois — Bureau County — ROCKY RUN
Location
| State | Illinois |
| County | Bureau |
| River | ROCKY RUN |
| Coordinates | 41.28411, -89.55382 |
Physical Characteristics
| NID Height | 49 ft |
| Dam Height | 49 ft |
| Dam Length | 930 ft |
| NID Storage | 764 acre-ft |
| Max Storage | 764 acre-ft |
| Surface Area | 12 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Not Available |
| EAP Status | No |
| Last Inspection | May 6, 2025 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1960 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | Earth |
| Owner Type | Local Government |
| Owner | VILLAGE OF TISKILWA |
| Other Name | Menno-Haven Lake |
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.