Hubbard Lake Dam is a gravity dam located in Alpena County, Michigan, built in 1890. It carries a Low hazard potential classification.
Dam profile
NID height · 11 ft11 ft tall and 108 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Hubbard Lake Dam
The primary purpose of Hubbard Lake Dam is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Thunder Bay Power Company (private). It impounds the South Br Thunder Bay River near Hubbard Lake.
The dam stands 11 feet tall and stretches 108 feet across, creates a reservoir covering 8,800 acres, has a maximum storage capacity of 35,200 acre-feet, and collects water from a drainage area of 14 square miles. Completed in 1890, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. An emergency action plan is in place for this dam. The most recent inspection on record was 08/31/2010. That was over 16 years ago.
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Location
| State | Michigan |
| County | Alpena |
| Nearest City | Hubbard Lake |
| River/Stream | South Br Thunder Bay River |
| Coordinates | 44.86000, -83.59667 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 108 ft |
| Year Completed | 1890 (136 years old) |
Storage & Hydraulics
| NID Storage | 35,200 acre-ft |
| Max Storage | 35,200 acre-ft |
| Normal Storage | 34,200 acre-ft |
| Surface Area | 8,800 acres |
| Drainage Area | 14 sq mi |
| Max Discharge | 1,100 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Thunder Bay Power Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/31/2010 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MI00176 |
| Federal ID | MI00176 |
| More Info | State Dam Safety Program |