Lake Le-Ann South Dam

Grand River· Hillsdale, Michigan· Built 1960· Earth· 23 ft tall
Low Hazard Recreation Private

Key Takeaway

Lake Le-Ann South Dam is classified as low hazard in Michigan. It was completed in 1960 and is 66 years old. Its primary use is recreation.

Physical Details

Dam Height 23 ft (taller than 79.7% in MI)
Dam Length155 ft
Dam TypeEarth
Max Storage1.0K acre-ft
Normal Storage700 acre-ft
Surface Area275 acres
Drainage Area2 sq mi
Max Discharge85 cfs
Year Completed1960 (66 years old)
NID IDMI00079

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: October 2, 2019
State Regulated: Yes
Regulatory Agency: MICHIGAN DEGLE

Ownership

Lake Le-Ann Property Owners Assoc.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Lake Le-Ann South Dam?

Lake Le-Ann South Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Lake Le-Ann South Dam?

Lake Le-Ann South Dam is owned by Lake Le-Ann Property Owners Assoc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Lake Le-Ann South Dam built?

Lake Le-Ann South Dam was completed in 1960, making it 66 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Lake Le-Ann South Dam?

Lake Le-Ann South Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Lake Le-Ann South Dam?

Lake Le-Ann South Dam has a dam height of 23 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Lake Le-Ann South Dam last inspected?

Lake Le-Ann South Dam was last inspected on October 2, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.