Tiger Creek Regulator

Tiger Creek· Amador, California· Built 1931· Concrete· 110 ft tall
Significant Hazard Hydroelectric Private

Key Takeaway

Tiger Creek Regulator is classified as significant hazard in California. It was completed in 1931 and is 95 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 110 ft (taller than 83.9% in CA)
Dam Length510 ft
Dam TypeConcrete
Max Storage533 acre-ft
Normal Storage234 acre-ft
Surface Area13 acres
Drainage Area9 sq mi
Max Discharge5,200 cfs
Year Completed1931 (95 years old)
NID IDCA00400

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: July 11, 2023
State Regulated: Yes
Regulatory Agency: DWR, Safety of Dams

Ownership

Pacific Gas and Electric Company

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Tiger Creek Regulator?

Tiger Creek Regulator 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 Tiger Creek Regulator?

Tiger Creek Regulator is owned by Pacific Gas and Electric Company (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Tiger Creek Regulator built?

Tiger Creek Regulator was completed in 1931, making it 95 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 Tiger Creek Regulator?

Tiger Creek Regulator serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Tiger Creek Regulator?

Tiger Creek Regulator has a dam height of 110 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 Tiger Creek Regulator last inspected?

Tiger Creek Regulator was last inspected on July 11, 2023. 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.