Mallard Marsh Dam
Key Takeaway
Mallard Marsh Dam is classified as low hazard in Washington. It was completed in 1960 and is 66 years old. Its primary use is recreation.
Physical Details
| Dam Length | 350 ft |
| Dam Type | Earth |
| Max Storage | 250 acre-ft |
| Normal Storage | 168 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 22 cfs |
| Year Completed | 1960 (66 years old) |
| NID ID | WA00721 |
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
Little Diamond Campground
Private
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Low HazardFrequently Asked Questions
What is the hazard classification of Mallard Marsh Dam?
Mallard Marsh Dam 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 Mallard Marsh Dam?
Mallard Marsh Dam is owned by Little Diamond Campground (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mallard Marsh Dam built?
Mallard Marsh 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 Mallard Marsh Dam?
Mallard Marsh Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.