Lake Mamie

MAMMOTH CREEK· Mono, California· Built 1968· Concrete· 6 ft tall
Significant Hazard Water Supply Fish And Wildlife Pond Recreation Flood Risk Reduction Federal Government

Key Takeaway

Lake Mamie is classified as significant hazard in California. It was completed in 1968 and is 58 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 6 ft (taller than 0.1% in CA)
Dam Length50 ft
Dam TypeConcrete
Year Completed1968 (58 years old)
NID IDCA10389

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: No
Last Inspection: October 24, 2013
State Regulated: No

Ownership

USDA FS

Federal Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Lake Mamie?

Lake Mamie is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Lake Mamie?

Lake Mamie is owned by USDA FS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Lake Mamie built?

Lake Mamie was completed in 1968, making it 58 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 Mamie?

Lake Mamie serves the following purposes: Water Supply, Fish And Wildlife Pond, Recreation, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Lake Mamie?

Lake Mamie has a dam height of 6 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 Mamie last inspected?

Lake Mamie was last inspected on October 24, 2013. 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.