Cadman Lewisville S&G Pit
Key Takeaway
Cadman Lewisville S&G Pit is classified as high hazard in Washington. It was completed in 2007 and is 19 years old. Its primary use is other. 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 | 1,400 ft |
| Dam Type | Earth |
| Max Storage | 293 acre-ft |
| Normal Storage | 266 acre-ft |
| Drainage Area | 14 sq mi |
| Max Discharge | 11 cfs |
| Year Completed | 2007 (19 years old) |
| NID ID | WA00775 |
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
HM Pacific Northwest, Inc.
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Cadman Lewisville S&G Pit?
Cadman Lewisville S&G Pit 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 Cadman Lewisville S&G Pit?
Cadman Lewisville S&G Pit is owned by HM Pacific Northwest, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cadman Lewisville S&G Pit built?
Cadman Lewisville S&G Pit was completed in 2007, making it 19 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 Cadman Lewisville S&G Pit?
Cadman Lewisville S&G Pit serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Cadman Lewisville S&G Pit last inspected?
Cadman Lewisville S&G Pit was last inspected on September 21, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.