Georgetown Flume Off-Leash Area Development

Updated: July 14, 2020

Summer 2020

Thank you to everyone who participated in the recent online survey, which closed July 13. Your input is appreciated. Watch this page for a survey summary soon.

Seattle Parks and Recreation (SPR) Project team presented the project along with representatives from Seattle City Light (SCL) and Seattle Department of Transportation (SDOT) during the Georgetown Open Space Committee online meeting June 22, 2020.
View a video of the presentation here.
View the materials presented here.


1035 South Myrtle Street, 98108


Seattle Parks and Recreation - $585,000 ($400,000 from Identified sources, $185,000 from sources to be identified.) SPR will provide off-leash area design, pavement removal, fencing, pedestrian circulation, water supply to the site, signage, waste receptacles, tree maintenance, and the surface water bioswale (shared with SDOT.)

Seattle City Light - $2,334,000
SCL will provide the property and the cost of grading and preparing the surface.

Seattle Department of Transportation - $1,638,000 (will seek from the City Council and/or a possible State grant.)
SDOT will provide curbs and sidewalks on S. Myrtle St and East Marginal Way S., paving and marking for trail, electric power to the site, pedestrian lighting, 20 trees for the Off-Leash Area, and the surface water bioswale (shared with Parks.)


Planning & Design: Spring 2020
Construction: Fall 2021

Project Description

The Flume site, currently owned by Seattle City Light (SCL), was the historic site of the conveyance that transported water from the Duwamish River, to the Georgetown Steam Plant until it ended operation in 1975. SCL is offering the eastern piece of this property to Seattle Parks and Recreation (SPR) and the western piece to Seattle Department of Transportation (SDOT) as part of a public benefit package in exchange for a street vacation SCL has proposed for a segment of Diagonal Avenue South. SCL will fund the environmental remediation of the site, including removal of contaminated soils. After the property is transferred, SPR and SDOT will each develop their property through independent projects.

The eastern portion of the site will be owned and maintained by SPR and developed into a new off-leash area. This project will also build a surface water bioswale to be shared with SDOT. 

The western portion will be owned and maintained by SDOT and developed into a shared use path for those walking, biking, or rolling between Georgetown and South Park.

The site will be inaccessible during construction.

For other off-leash areas in Seattle please visit

Community Participation

Learn about the new off leash area and participate in the public process as we work together to design your new park space.

Georgetown Open Space Committee ZOOM Meeting 6/22/2020