Sinaloa Lake

Tr Arroyo Simi· Ventura, California· Built 1925· Earth· 30 ft tall
High Hazard Other Irrigation Recreation Water Supply Private

Key Takeaway

Sinaloa Lake is classified as high hazard in California. It was completed in 1925 and is 101 years old. Its primary use is other. 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 30 ft (taller than 30.4% in CA)
Dam Length800 ft
Dam TypeEarth
Max Storage205 acre-ft
Surface Area15 acres
Drainage Area0 sq mi
Year Completed1925 (101 years old)
NID IDCA01018

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: August 31, 2022
State Regulated: Yes
Regulatory Agency: DWR, Division of Safety of Dams

Ownership

Sinola Lake Owners Association

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Sinaloa Lake?

Sinaloa Lake 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 Sinaloa Lake?

Sinaloa Lake is owned by Sinola Lake Owners Association (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Sinaloa Lake built?

Sinaloa Lake was completed in 1925, making it 101 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 Sinaloa Lake?

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

How tall is Sinaloa Lake?

Sinaloa Lake has a dam height of 30 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 Sinaloa Lake last inspected?

Sinaloa Lake was last inspected on August 31, 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.