Lake Aloha Main
Key Takeaway
Lake Aloha Main is classified as high hazard in California. It was completed in 1917 and is 109 years old. Its primary use is hydroelectric. 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 | 32 ft (taller than 34.2% in CA) |
| Dam Length | 113 ft |
| Dam Type | Masonry |
| Max Storage | 5.1K acre-ft |
| Normal Storage | 5.1K acre-ft |
| Surface Area | 630 acres |
| Drainage Area | 3 sq mi |
| Year Completed | 1917 (109 years old) |
| NID ID | CA00376 |
Safety Information
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?
Ownership
El Dorado Irrigation District
Private
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Low Hazard 36 ftFrequently Asked Questions
What is the hazard classification of Lake Aloha Main?
Lake Aloha Main 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 Lake Aloha Main?
Lake Aloha Main is owned by El Dorado Irrigation District (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Aloha Main built?
Lake Aloha Main was completed in 1917, making it 109 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 Lake Aloha Main?
Lake Aloha Main serves the following purposes: Hydroelectric, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lake Aloha Main?
Lake Aloha Main has a dam height of 32 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 Lake Aloha Main last inspected?
Lake Aloha Main was last inspected on August 24, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.