Lapham Reservoir
Key Takeaway
Lapham Reservoir is classified as low hazard in Oregon. It was completed in 1920 and is 106 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 16 ft (taller than 20.1% in OR) |
| Dam Length | 327 ft |
| Dam Type | Earth |
| Max Storage | 213 acre-ft |
| Normal Storage | 178 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 100 cfs |
| Year Completed | 1920 (106 years old) |
| NID ID | OR00123 |
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
STEVEN & KAREN SIMMONS, BLY 97622
Private
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Lapham Reservoir?
Lapham Reservoir 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 Lapham Reservoir?
Lapham Reservoir is owned by STEVEN & KAREN SIMMONS, BLY 97622 (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lapham Reservoir built?
Lapham Reservoir was completed in 1920, making it 106 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 Lapham Reservoir?
Lapham Reservoir serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lapham Reservoir?
Lapham Reservoir has a dam height of 16 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 Lapham Reservoir last inspected?
Lapham Reservoir was last inspected on August 8, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.