Jean Lake Dam is an earth dam located in King County, Washington, built in 1963. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 70 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 Jean Lake Dam
The primary purpose of Jean Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Twin Lakes Golf and Country Club (private). It impounds the Joes Creek.
The dam stands 15 feet tall and stretches 70 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 123 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1963, the structure is well into its service life at over 50 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 | Joes Creek |
| Coordinates | 47.31198, -122.38026 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Length | 70 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 123 acre-ft |
| Max Storage | 123 acre-ft |
| Normal Storage | 100 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 41 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Twin Lakes Golf and Country Club |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00192 |
| Federal ID | WA00192 |
| More Info | State Dam Safety Program |