Shannon Lake Dam is an earth dam located in Livingston County, Michigan, built in 1975. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 22 ft22 ft tall and 1,200 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Shannon Lake Dam
The primary purpose of Shannon Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Shannon Association (private). It impounds the North Branch Ore Creek near Argentine.
The dam stands 22 feet tall and stretches 1,200 feet across, creates a reservoir covering 317 acres, has a maximum storage capacity of 3,410 acre-feet, and collects water from a drainage area of 53 square miles. Completed in 1975, the structure is well into its service life at over 50 years 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 09/18/2017.
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Location
| State | Michigan |
| County | Livingston |
| Nearest City | Argentine |
| River/Stream | North Branch Ore Creek |
| Coordinates | 42.72500, -83.79500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 1,200 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 3,410 acre-ft |
| Max Storage | 3,410 acre-ft |
| Normal Storage | 2,790 acre-ft |
| Surface Area | 317 acres |
| Drainage Area | 53 sq mi |
| Max Discharge | 1,250 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lake Shannon Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/18/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MI00621 |
| Federal ID | MI00621 |
| More Info | State Dam Safety Program |