Chorro Creek

Chorro Creek· San Luis Obispo, California· Built 1941· Earth· 77 ft tall
High Hazard Water Supply Irrigation State Government

Key Takeaway

Chorro Creek is classified as high hazard in California. It was completed in 1941 and is 85 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 77 ft (taller than 75.3% in CA)
Dam Length500 ft
Dam TypeEarth
Max Storage90 acre-ft
Surface Area10 acres
Drainage Area3 sq mi
Year Completed1941 (85 years old)
NID IDCA01076

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: February 16, 2022
State Regulated: Yes
Regulatory Agency: DWR, Division of Safety of Dams

Ownership

California Department of Corrections and Rehabilitation

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Chorro Creek?

Chorro Creek 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 Chorro Creek?

Chorro Creek is owned by California Department of Corrections and Rehabilitation (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Chorro Creek built?

Chorro Creek was completed in 1941, making it 85 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 Chorro Creek?

Chorro Creek 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 Chorro Creek?

Chorro Creek has a dam height of 77 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 Chorro Creek last inspected?

Chorro Creek was last inspected on February 16, 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.