Queens Bog Dam

Tr-Sammamish Lake· King, Washington· Built 1987· Earth·
Low Hazard Flood Risk Reduction Local Government

Key Takeaway

Queens Bog Dam is classified as low hazard in Washington. It was completed in 1987 and is 39 years old. Its primary use is flood risk reduction.

Physical Details

Dam Length100 ft
Dam TypeEarth
Max Storage132 acre-ft
Normal Storage34 acre-ft
Surface Area17 acres
Drainage Area5 sq mi
Max Discharge80 cfs
Year Completed1987 (39 years old)
NID IDWA01633

Safety Information

Low Hazard

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?

Emergency Action Plan: No
Last Inspection: September 1, 2023
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Sammamish City Public Works

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Queens Bog Dam?

Queens Bog 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 Queens Bog Dam?

Queens Bog Dam is owned by Sammamish City Public Works (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Queens Bog Dam built?

Queens Bog Dam was completed in 1987, making it 39 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 Queens Bog Dam?

Queens Bog Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Queens Bog Dam last inspected?

Queens Bog Dam was last inspected on September 1, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.