Westcrest Park Drainage Improvements

Updated: January 11, 2022

Winter 2021/2022

Seattle Parks and Recreation (SPR) awarded the construction contract to OMA Construction, Inc. for the Westcrest Park Off-leash Area Drainage Improvements project. Construction began in October 2021. The main off-leash area and the north parking lot will be fully closed during construction. A temporary off-leash area is available, for public use, during closure of the existing off-leash area. The existing small/shy dog area will remain open to small and shy dogs only. If you do not have a small or shy dog, we kindly ask that you take your dog to the nearby temporary off-leash (OLA) area that was created to serve dog owners while the Westcrest OLA remains closed for the drainage improvements project. All dogs can exercise and play safely with other dogs in the temporary facility. The small and shy dog area is reserved specifically for those dogs that need the space.

Thank you for your understanding and cooperation, and for your commitment to keeping our OLAs safe and welcoming for all dogs. Park users can access the temporary area through the south parking lot. Anticipated reopening is in spring 2022. Please see attached construction map.

Due to safety for all and the scope of the project, the north parking lot and the entire OLA will be closed for the duration of construction. We understand the impact the construction closure will have on the users of the Westcrest Park OLA and have developed a plan to provide temporary OLA facilities at Westcrest Park for the duration of the closure.

  • The existing small/shy dog area will remain open for use during construction. This provides additional space and continuity of current use for the OLA users.
  • We will construct a temporary OLA space on SPR property just north of the P-Patch and west of the small/shy dog area in a space that is currently lawn. This location is close to the existing small/shy dog area and is centrally located within the park. Please see the attached diagram for the location. The Temporary OLA will be located to the north of the P-Patch. It will consist of temporary fencing installed and maintained by the contractor hired to perform the work for the drainage improvements. After construction, the contractor will restore the Temporary OLA back to lawn.

Photo/link to construction plan for the temporary off-leash area.
Download the construction map for the temporary off-leash area

Also you can find a list of all 14 Off-Leash Areas on the Dog Off Leash Areas webpage. 


Westcrest Park, 9000 8th Ave SW, 98106


The Seattle Park District Major Maintenance and Asset Management Fund provides $505,000 in funding for this project.  


Planning and Design: Spring 2018 - Winter 2020
Summer 2021
Fall 2021 - Spring 2022

Project Description

The scope of the project includes:

  • Stabilizing areas of erosion on trails and down steep slopes.
  • Improving conveyance (e.g. rock-lined swales, concrete swales and HDPE piping) and outfalls to reduce potential for erosion.
  • Restricting dog and pedestrian access in sloped areas with additional fencing to reduce further loss and allow re-establishment of ground cover.
  • Regrading major use areas to reduce runoff velocities and the potential for erosion and sediment transport.
  • Stabilizing the dog play area surfaces with a well-draining mineral aggregate.
  • Constructing sediment traps to reduce transport of surfacing materials and improve water quality.
  • Relocating discharge points from tops of slopes to bottom of slope for full dispersion in the forest.
  • Providing accessibility improvements in the north parking lot and the north entrance.

Community Participation

Seattle Parks and Recreation (SPR) has determined that the project does not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43.21C.030(2)(c). This decision was made after review of a completed environmental checklist and other information on file with SPR. This information is available to the public on request. The Determination of Non-Significance was issued June 3, 2019.
Download the DNS document for additional information.

October 23, 2019 Meeting - Highland Park Action Committee
SPR presented the construction project and temporary off-leash plan.

November 9, 2019 - SPR met community stakeholders at the park to discuss temporary OLA plan.