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Map of Central Puget Sound Service Area for King County Mitigation Reserves Program 


The Central Puget Sound service area comprises 91 square miles of WRIA 8 and WRIA 9 that drain directly to Puget Sound, as well as Vashon Island and Maury Island. Except for Vashon/Maury Island, much of the land area in this service area is relatively high density development relative to other service areas. Permittees with impacts to wetlands, streams, and buffers may be able to use the King County In-Lieu Fee Program to offset unavoidable impacts within the Central Puget Sound watershed.

Mitigation Sites

Chinook Wind Mitigation Project

More Information

General information for Permittee/Consultants

General information for Regulators


For more information about King County’s Mitigation Reserves Program, please contact Megan Webb, Program Manager (in the Water & Land Resources Division’s Rural and Regional Services Section).