Lake Le-ann South Dam is an earth dam located in Hillsdale County, Michigan, built in 1960. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 23 ft23 ft tall and 155 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 Lake Le-ann South Dam
The primary purpose of Lake Le-ann South Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Le-ann Property Owners Assoc. (private). It impounds the Grand River near Liberty.
The dam stands 23 feet tall and stretches 155 feet across, creates a reservoir covering 275 acres, has a maximum storage capacity of 1,000 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1960, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 10/02/2019.
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Location
| State | Michigan |
| County | Hillsdale |
| Nearest City | Liberty |
| River/Stream | Grand River |
| Coordinates | 42.06278, -84.43056 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 155 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 1,000 acre-ft |
| Max Storage | 1,000 acre-ft |
| Normal Storage | 700 acre-ft |
| Surface Area | 275 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 85 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lake Le-ann Property Owners Assoc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/02/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MI00079 |
| Federal ID | MI00079 |
| More Info | State Dam Safety Program |