Queens Bog Dam is an earth dam located in King County, Washington, built in 1987. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 100 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Queens Bog Dam
The primary purpose of Queens Bog Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Sammamish City Public Works (local government). It impounds the Tr-sammamish Lake.
The dam stands 12 feet tall and stretches 100 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 132 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1987, the structure is 39 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Washington |
| County | King |
| River/Stream | Tr-sammamish Lake |
| Coordinates | 47.57990, -122.01718 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Length | 100 ft |
| Year Completed | 1987 (39 years old) |
Storage & Hydraulics
| NID Storage | 132 acre-ft |
| Max Storage | 132 acre-ft |
| Normal Storage | 34 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 80 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Sammamish City Public Works |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA01633 |
| Federal ID | WA01633 |
| More Info | State Dam Safety Program |