Holbrook

Ash Creek· Lassen, California· Built 1952· Earth· 26 ft tall
Low Hazard Other Irrigation Water Supply Private

Key Takeaway

Holbrook is classified as low hazard in California. It was completed in 1952 and is 74 years old. Its primary use is other.

Physical Details

Dam Height 26 ft (taller than 24.8% in CA)
Dam Length455 ft
Dam TypeEarth
Max Storage719 acre-ft
Surface Area122 acres
Drainage Area14 sq mi
Year Completed1952 (74 years old)
NID IDCA00945

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: No
Last Inspection: April 28, 2022
State Regulated: Yes
Regulatory Agency: DWR, Division of Safety of Dams

Ownership

Private Entity

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Holbrook?

Holbrook 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 Holbrook?

Holbrook is owned by Private Entity (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Holbrook built?

Holbrook was completed in 1952, making it 74 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 Holbrook?

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

How tall is Holbrook?

Holbrook has a dam height of 26 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 Holbrook last inspected?

Holbrook was last inspected on April 28, 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.