Lakemont Stormwater Pond
Lakemont Stormwater Pond is an earth dam located in King County, Washington, built in 1992. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Lakemont Stormwater Pond
The primary purpose of Lakemont Stormwater Pond 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 Bellevue City Parks (local government). It impounds the Lewis Creek near Bellevue.
The dam stands 13 feet tall and stretches 930 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 25 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1992, the structure is 34 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 07/20/2022.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Washington dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Washington |
| County | King |
| Nearest City | Bellevue |
| River/Stream | Lewis Creek |
| Coordinates | 47.55727, -122.11188 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Length | 930 ft |
| Year Completed | 1992 (34 years old) |
Storage & Hydraulics
| NID Storage | 25 acre-ft |
| Max Storage | 25 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 581 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Bellevue City Parks |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/20/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WA01651 |
| Federal ID | WA01651 |
| More Info | State Dam Safety Program |