Bellevue Detention Pond 133 is an earth dam located in King County, Washington, built in 1983. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall. 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 Bellevue Detention Pond 133
The primary purpose of Bellevue Detention Pond 133 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 Utilities Dept (local government). It impounds the Kelsey Creek near Bellevue.
The dam stands 12 feet tall, has a maximum storage capacity of 90 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1983, the structure is 43 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 |
| Nearest City | Bellevue |
| River/Stream | Kelsey Creek |
| Coordinates | 47.61931, -122.14265 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Year Completed | 1983 (43 years old) |
Storage & Hydraulics
| NID Storage | 90 acre-ft |
| Max Storage | 90 acre-ft |
| Normal Storage | 61 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 36 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Bellevue City Utilities Dept |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00477 |
| Federal ID | WA00477 |
| More Info | State Dam Safety Program |