Ingals Swamp
Key Takeaway
Ingals Swamp is classified as low hazard in California. It was completed in 1918 and is 108 years old. Its primary use is water supply.
Physical Details
| Dam Height | 23 ft (taller than 21.2% in CA) |
| Dam Length | 2,200 ft |
| Dam Type | Earth |
| Max Storage | 2.9K acre-ft |
| Surface Area | 262 acres |
| Drainage Area | 9 sq mi |
| Year Completed | 1918 (108 years old) |
| NID ID | CA00474 |
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
Lazy Spade, LLC
Private
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High Hazard 49 ftFrequently Asked Questions
What is the hazard classification of Ingals Swamp?
Ingals Swamp 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 Ingals Swamp?
Ingals Swamp is owned by Lazy Spade, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Ingals Swamp built?
Ingals Swamp was completed in 1918, making it 108 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 Ingals Swamp?
Ingals Swamp 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 Ingals Swamp?
Ingals Swamp has a dam height of 23 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 Ingals Swamp last inspected?
Ingals Swamp was last inspected on June 7, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.