Whittier Reservoir No. 4
Key Takeaway
Whittier Reservoir No. 4 is classified as low hazard in California. It was completed in 1931 and is 95 years old. Its primary use is water supply.
Physical Details
| Dam Height | 55 ft (taller than 63.8% in CA) |
| Dam Length | 190 ft |
| Dam Type | Earth |
| Max Storage | 32 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1931 (95 years old) |
| NID ID | CA00153 |
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
City of Whittier Water District
Local Government
Nearby Dams
Whittier Narrows Dam
Los Angeles, CA
High Hazard 56 ftGarvey Reservoir
Los Angeles, CA
High Hazard 160 ftLaguna Regulating Basin
Los Angeles, CA
Significant Hazard 43 ftSanta Fe Dam
Los Angeles, CA
High Hazard 92 ft30 Mg Central Reservoir
Orange, CA
High Hazard 30 ftBrea Dam
Orange, CA
High Hazard 87 ftOrange County Reservoir
Orange, CA
High Hazard 103 ftFullerton Dam
Orange, CA
High Hazard 46 ftFrequently Asked Questions
What is the hazard classification of Whittier Reservoir No. 4?
Whittier Reservoir No. 4 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 Whittier Reservoir No. 4?
Whittier Reservoir No. 4 is owned by City of Whittier Water District (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Whittier Reservoir No. 4 built?
Whittier Reservoir No. 4 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 Whittier Reservoir No. 4?
Whittier Reservoir No. 4 serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Whittier Reservoir No. 4?
Whittier Reservoir No. 4 has a dam height of 55 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 Whittier Reservoir No. 4 last inspected?
Whittier Reservoir No. 4 was last inspected on February 16, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.