Greenwood Afterbay Dam
Michigan — Marquette County — Middle Branch Escanaba River
Location
| State | Michigan |
| County | Marquette |
| River | Middle Branch Escanaba River |
| Coordinates | 46.43474, -87.78537 |
Physical Characteristics
| NID Height | 41 ft |
| Dam Height | 41 ft |
| Dam Length | 610 ft |
| NID Storage | 1,080 acre-ft |
| Max Storage | 1,080 acre-ft |
| Surface Area | 50 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | December 1, 2016 |
| Inspection Frequency | 4 |
Dam Information
| Year Completed | 1973 |
| Primary Purpose | Water Supply |
| Dam Type | Concrete |
| Owner Type | Private |
| Owner | Tilden Mining Company LC |
| Other Name | Afterbay Dam |
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.