The Des Moines Creek Regional Detention Facility East Berm is a crucial flood risk reduction structure located in King County, Washington.
Wind
Humidity
Built in 2009, this earth dam stands at a hydraulic height of 17.5 feet and a structural height of 14 feet, with a length of 450 feet. It serves the primary purpose of flood risk reduction and has a maximum storage capacity of 53 acre-feet, providing protection to the surrounding area from potential inundation during heavy rainfall events.
Managed by the Washington Department of Ecology, this facility is subject to regular inspections, with the most recent assessment in July 2020 deeming its condition as satisfactory. With a high hazard potential, the dam is designed to withstand the hydraulic pressures of its drainage area of 1.63 square miles. Despite its critical role in mitigating flood risks, the facility does not have a spillway or outlet gates, indicating a reliance on its earth core and stone foundation for structural integrity during high-flow events.
As climate change continues to impact the frequency and intensity of precipitation events, structures like the Des Moines Creek Regional Detention Facility East Berm play a vital role in safeguarding communities against flooding. With its strategic location and design, this earth dam stands as a testament to proactive flood risk management in the face of evolving environmental challenges.
Year Completed |
2009 |
Dam Length |
450 |
Primary Dam Type |
Earth |
Hydraulic Height |
17.5 |
Drainage Area |
1.63 |
Nid Storage |
53 |
Structural Height |
14 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
18 |
Mill Creek Near Mouth At Orillia
|
44cfs |
Spring Brook Creek At Orillia
|
7cfs |
Duwamish River At Golf Course At Tukwila
|
6700cfs |
Mill Creek At Earthworks Park At Kent
|
8cfs |
Cedar River At Renton
|
5160cfs |
Green River Near Auburn
|
10100cfs |
| Location | Reservations | Toilets |
|---|---|---|
Point Robinson Campground
|
||
Dash Point State Park
|
||
Dash Point Campground
|