Finnon Lake

Jay Bird Creek· El Dorado, California· Built 2012· Earth· 46 ft tall
Significant Hazard Water Supply Recreation Public Utility

Key Takeaway

Finnon Lake is classified as significant hazard in California. It was completed in 2012 and is 14 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 46 ft (taller than 55.4% in CA)
Dam Length830 ft
Dam TypeEarth
Max Storage400 acre-ft
Surface Area35 acres
Drainage Area0 sq mi
Year Completed2012 (14 years old)
NID IDCA00024

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: Yes
Last Inspection: April 6, 2022
State Regulated: Yes
Regulatory Agency: DWR, Division of Safety of Dams

Ownership

Mosquito Volunteer Fire Department

Public Utility

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Finnon Lake?

Finnon Lake 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 Finnon Lake?

Finnon Lake is owned by Mosquito Volunteer Fire Department (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Finnon Lake built?

Finnon Lake was completed in 2012, making it 14 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 Finnon Lake?

Finnon Lake serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Finnon Lake?

Finnon Lake has a dam height of 46 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 Finnon Lake last inspected?

Finnon Lake was last inspected on April 6, 2022. 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.