Boyd Lower Reservoir Dam
Key Takeaway
Boyd Lower Reservoir Dam is classified as high hazard in Washington. It was completed in 1960 and is 66 years old. Its primary use is irrigation. 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 Length | 270 ft |
| Dam Type | Earth |
| Max Storage | 18 acre-ft |
| Normal Storage | 9 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1960 (66 years old) |
| NID ID | WA01384 |
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
Mountain Lake Tree Farm, LLC
Private
Nearby Dams
Mountain Lake Dam
San Juan, WA
High HazardCascade Lake Dam
San Juan, WA
High HazardUtter Dam
San Juan, WA
Low HazardBuck Mountain Reservoir Dam No 1
San Juan, WA
High HazardMartins Lake Dam
San Juan, WA
Low HazardBuck Mountain Reservoir Dam No 3
San Juan, WA
High HazardBuck Mountain Reservoir Dam No 2
San Juan, WA
High HazardAyer Reservoir Dam
San Juan, WA
Low HazardFrequently Asked Questions
What is the hazard classification of Boyd Lower Reservoir Dam?
Boyd Lower Reservoir Dam 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 Boyd Lower Reservoir Dam?
Boyd Lower Reservoir Dam is owned by Mountain Lake Tree Farm, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Boyd Lower Reservoir Dam built?
Boyd Lower Reservoir Dam was completed in 1960, making it 66 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 Boyd Lower Reservoir Dam?
Boyd Lower Reservoir Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Boyd Lower Reservoir Dam last inspected?
Boyd Lower Reservoir Dam was last inspected on January 4, 2024. Inspection dates indicate when a formal review occurred, not the results of that inspection.