Lake St Helen Lake Level Control
Michigan — Roscommon County — South Branch Au Sable River
Location
| State | Michigan |
| County | Roscommon |
| River | South Branch Au Sable River |
| Coordinates | 44.40833, -84.46333 |
Physical Characteristics
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 200 ft |
| NID Storage | 7,700 acre-ft |
| Max Storage | 7,700 acre-ft |
| Surface Area | 2,400 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Satisfactory |
| EAP Status | Not Required |
| Last Inspection | July 15, 2019 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1930 |
| Primary Purpose | Recreation |
| Dam Type | Gravity |
| Owner Type | Private |
| Owner | Roscommon County |
| Other Name | Carter 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.