Maerkle

Tr Aqua Hedionda· San Diego, California· Built 1963· Earth· 165 ft tall
High Hazard Water Supply Irrigation Public Utility

Key Takeaway

Maerkle is classified as high hazard in California. It was completed in 1963 and is 63 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 165 ft (taller than 91.8% in CA)
Dam Length800 ft
Dam TypeEarth
Max Storage600 acre-ft
Surface Area14 acres
Drainage Area0 sq mi
Year Completed1963 (63 years old)
NID IDCA00844

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

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

Emergency Action Plan: Yes
Last Inspection: January 7, 2022
State Regulated: Yes
Regulatory Agency: DWR, Division of Safety of Dams

Ownership

Carlsbad Municipal Water District

Public Utility

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Maerkle?

Maerkle is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Maerkle?

Maerkle is owned by Carlsbad Municipal Water District (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Maerkle built?

Maerkle was completed in 1963, making it 63 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 Maerkle?

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

How tall is Maerkle?

Maerkle has a dam height of 165 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 Maerkle last inspected?

Maerkle was last inspected on January 7, 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.