Washington Park Stormwater Tank Maintenance

Aerial image of SPU’s stormwater detention tank in Washington Park.
Aerial image of SPU’s stormwater detention tank in Washington Park.

Project Description

Seattle Public Utilities (SPU) owns and operates a stormwater storage tank in Washington Park near the Washington Park Playfield. 

For this project, SPU performed a maintenance upgrade to improve the way this facility manages flows during rain events. This work improves SPU's ability to monitor and control stormwater flows and allows us to use our existing infrastructure more efficiently.


SPU's stormwater storage tank is located near the Washington Park Playfield in the southern portion of Washington Park near E Roy Street, 29th Avenue E, and E Madison Street.

Project Results

SPU performed this work to enhance the functionality of the infrastructure, increase service reliability, improve regional water quality, and to improve SPU’s ability to manage flows more efficiently.


Construction began in May 2021 and was completed in April 2022.

Public Utilities

Andrew Lee, General Manager and CEO
Address: 700 5th Avenue, Suite 4900, Seattle, WA, 98104
Mailing Address: PO Box 34018, Seattle, WA, 98124-5177
Phone: (206) 684-3000

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Seattle Public Utilities (SPU) is comprised of three major direct-service providing utilities: the Water Utility, the Drainage and Wastewater Utility, and the Solid Waste Utility.