Pit No. 5 Diversion
Key Takeaway
Pit No. 5 Diversion is classified as low hazard in California. It was completed in 1944 and is 82 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 58 ft (taller than 66.2% in CA) |
| Dam Length | 340 ft |
| Dam Type | Concrete |
| Max Storage | 327 acre-ft |
| Normal Storage | 330 acre-ft |
| Surface Area | 32 acres |
| Drainage Area | 4,610 sq mi |
| Max Discharge | 132,000 cfs |
| Year Completed | 1944 (82 years old) |
| NID ID | CA00402 |
Safety Information
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?
Ownership
Pacific Gas and Electric Company
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Pit No. 5 Diversion?
Pit No. 5 Diversion 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 Pit No. 5 Diversion?
Pit No. 5 Diversion is owned by Pacific Gas and Electric Company (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pit No. 5 Diversion built?
Pit No. 5 Diversion was completed in 1944, making it 82 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 Pit No. 5 Diversion?
Pit No. 5 Diversion 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 Pit No. 5 Diversion?
Pit No. 5 Diversion has a dam height of 58 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 Pit No. 5 Diversion last inspected?
Pit No. 5 Diversion was last inspected on September 18, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.