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Watersheds, rivers and streams

Central Puget Sound

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Central Puget Sound Watershed

Vashon-Maury Island environment

Vashon - Maury Island map
Vashon-Maury Island map

Vashon-Maury Island page provides environmental information and services from King County and its partners related specifically to the island. For more information about Vashon-Maury Island or to get involved in Water and Land activities, please call Greg Rabourn, Vashon/Maury Island Watershed Steward, at 206-296-1923. Related information can be found for the Central Puget Sound Watershed, of which Vashon-Maury Island is a part.

Basin Steward Program
Find out what Water and Land Resources' Basin Steward Program does and how to contact Basin Stewards.

Community Service Center
Information about the King County satellite office on Vashon Island at the address, Courthouse Square, 19021 Vashon Hwy. S.W., Vashon, WA 98070. Phone 206-296-4510.

Current projects

Vashon Habitat Stewardship Whirlwind event
Presentation videos covering a variety of wildlife habitat topics related to Vashon and Maury Islands. Presented January, 2013 at McMurry Middle School.

Dockton Shoreline Restoration Project
Project is planned for summer 2012, restoring the shoreline and a salt marsh at Dockton, WA on Vashon/Maury Island.  Includes Determination of Non-Significance under the State Environmental Policy Act (SEPA).

Vashon-Maury Island Marine Recovery Area
State law assuring that property owners inspect, repair or replace septic systems to manage water pollution and to protect, preserve and restore shellfish harvest opportunities for the public.

Salmon recovery

WRIA 9 Salmon Recovery (includes Vashon-Maury Island)
For the purposes of salmon conservation planning, Vashon-Maury Island was transferred from WRIA 15 (Kitsap County) to WRIA 9, the Green/Duwamish and Central Puget Sound drainage area. The salmon recovery site provides status and actions about the recovery of threatened salmon species in WRIA 9, including an overview of the planning process, scientific information, and meeting records. We welcome your participation.

Surface water, groundwater, and drinking water

Introduction to watersheds

Report problems: drainage and water quality

Protecting Our Liquid Assets - informational mailer describing Vashon-Maury Island's valuable water resources.

Vashon-Maury Island Watershed Plan
Plan assessing the water resources on Vashon and Maury Islands and to help resolve surface water issues.

Pollution monitoring
Ongoing water quality sampling in Vashon-Maury Island streams. Water quality data are available online for:

Vashon-Maury Island Rapid Rural Reconnaissance - Draft Report
Inventory of the island's surface water needs. This report lists priority drainage and water quality projects, acquisitions, studies and programs that would receive funding through surface water management fees.

King County's surface water management fee for unincorporated King County & Vashon Island
Provides a history of King County's surface water management program, its services and fees, and contacts for more information.

Vashon - Maury Island Water Resources Evaluation
Read about this long-term project to understand what affects the quality and quantity of the island's groundwater, and update it's drinking water budget based on new knowledge.

Vashon-Maury Island Groundwater Management Area
Read the groundwater sampling and analysis plan, an interactive map, and learn about the area's groundwater protection committee.

Salmon watching on Vashon Island
Maps of salmon viewing sites located on Vashon Island and contact information to volunteer as for King County's Salmon Watcher monitoring program.

Vashon-Maury Island stream mouth assessment (external link)
(2001) Vashon Island stream habitat health including fish barriers; intended to protect streams, support informed land-use decisions, and guide restoration efforts. King County is proud to have supported this grassroots effort, co-funded by the Vashon-Maury Island Audubon, Trout and Salmon Foundation and Washington Trout. About the project.

Rain barrel information and sources for the Pacific Northwest
How to design a rain barrel or cistern system and where to buy them.

Wastewater treatment

Vashon wastewater treatment plant
Learn about this treatment plant including details about a project to upgrade it. This page provides notices of public meetings, news releases, contact information and a map showing where the plant is located.

Beaches, nearshore and marine environment

Vashon-Maury Island nearby tide graphs, courtesy of NOAA

Marine monitoring data

Marine Shoreline Inventory Report
Inventory of selected shoreline habitat features that support juvenile salmonids, presented in part using high-resolution aerial photos with overlays that classify habitat types.

Quartermaster Harbor Nitrogen Management Study
This study will evaluate the role of nitrogen in the risk of lethal, low-level dissolved oxygen events in Quartermaster Harbor, a sensitive marine embayment of Vashon-Maury Island in Puget Sound.

Juvenile Salmonid Composition, Timing, Distribution, and Diet in Marine Nearshore Waters of Central Puget Sound in 2001-2002
Scientific report essential to protect and recover Puget Sound salmon stocks.

Spatial Relationships between Beneficial and Detrimental Nearshore Habitat Parameters in WRIA 9 and the City of Seattle (external, Acrobat pdf)
Presents analysis of data from the Marine Shoreline Inventory report and provides linkages between shoreline armoring and loss of riparian vegetation and drift log accumulations.

Prioritization of Marine Shorelines of WRIA 9 for Juvenile Salmonid Habitat Protection and Restoration (2006)
Identifies Puget Sound shoreline habitats in southern King County that should be preserved or restored to help salmon.

Inventory and Assessment of Current and Historic Beach Feeding Sources/Erosion and Accretion Areas for the Marine Shorelines of Water Resource Inventory Areas 8 and 9

Puget Sound Shoreline Stewardship Guidebook
Provides info and contacts for residents of beach and bluff shorelines to learn about natural shoreline protection, manage runoff, use native plants, control aggressive non-native plants, and maintain septic systems in an ecologically friendly way.

Hermicen - Marine InvertebratePuget Sound marine life photos
A photo collection of Puget Sound fish, invertebrates, and algae to aid the identification of marine species.

Marine life beach assessments
Results of a volunteer marine life survey conducted in 1996 and 1997, providing descriptions for beaches at Burton Acres, Dockton, Maury Island Marine Park, Point Robinson Park, and Tramp Harbor on Vashon-Maury Island.

Puget Sound Nearshore Environment

Small stream mouthThe Puget Sound Nearshore Environment. An illustrated presentation.
Go to Beyond the Beach:
Learn about the Nearshore Environment and what you can do to help protect it from damage.
image of report coverState of the Nearshore Report
Summary and assessment of the state of our current knowledge of ecological processes and conditions, natural resources, and ecosystem health in nearshore portions of Central Puget Sound. Intended to provide a foundation for future environmental work and decision making.

Recreation and appreciation

Vashon–Maury Island parks & natural lands map and guid
Places for residents and visitors to get outside across Vashon-Maury Island.

Island Center Forest
363-acre working forest and ecological lands in the middle of Vashon Island.

Island Center Forest recreation map

Maury Island Marine Park recreation map

Dockton Forest recreation map


Noxious weed infestation map
Interactive map showing location of regulated noxious weed infestations.

Puget Sound Fresh
Look up Vashon area u-pick farms, community-supported farms, nurseries and produce markets.

Agriculture in King County, Washington

Quality assurance project plan for regulatory effectiveness monitoring for developing rural areas
Framework to monitor and evaluate land use regulations to help ensure their effectiveness, using indicators for hydrology, water quality, biology, and stream complexity.

Soil sampling: 1999-2000 Vashon-Maury Island Soil Study
This report page provides findings from Soil Sampling of Vashon-Maury Island and the Southern Mainland Coastline of King County including a report providing an examination of the levels of arsenic, lead, and other metals in the area downwind from the former Tacoma copper smelter.

Maury Island Ecological Economic Evaluation
Report describing the island's ecological assets and estimating their economic value to help inform decisions related to resource conservation, land use planning and sustainable practices.

Forestry services and information

Related information

Related agencies

News and announcements

Sign up Unincorporated News:

Mar. 13, 2014
Executive awards 27 Community Service Area grants to projects in unincorporated areas

Jan. 27, 2014
Learn about, and comment on long-term stewardship of Dockton Forest, Feb. 5

Sep. 27, 2013
Ag Commission to Vashon Oct. 10

Sep. 11, 2013
External report, KUOW
Restoring Puget Sound Shorelines One Beach At A Time audio

Sep. 5, 2013
Island Center Forest thinning and harvest designed to improve landscape’s health

Jul. 25, 2013
Aug. 5 public meeting, tour for upcoming Dockton shoreline restoration work

Jul. 18, 2013
Fish kill in Vashon’s Quartermaster Harbor is linked to harmful algae bloom

Jul. 12, 2013
King County Parks: Have a great time, but please don’t mud-bog at Island Center Forest

Apr. 4, 2013
Wastemobile: Household hazardous waste collection comes to Vashon, April 19-21

Dec. 3, 2012
Council adopts update of County land use policies
Strengthening protection of open space, integrating County Strategic Plan

Nov. 27, 2012
Public comment sought on County work plans for unincorporated communities

Oct. 17, 2012
Free scrap metal recycling coming to Vashon Recycling and Transfer station

Sept. 26, 2012
Executive’s budget advances Community Service Area program for better engagement with residents of unincorporated King County
Budget builds on County Council’s endorsement of new rural and urban unincorporated area engagement process

Sept. 12, 2012
County Executive recognizes People for Puget Sound on news it will cease operations this fall

Aug. 28, 2012
External report, KPLU
Why King County held a party for a property tax audio

Aug. 26, 2012
King County's first Community Solar project set to shine on Vashon Island

Aug. 17, 2012
King County proposes limited deer hunt at Island Center Forest for next 5 hunting seasons

Aug. 16, 2012
King County's first Community Solar project set to shine on Vashon Island

Aug. 2, 2012
King County Executive proposes partnership with Vashon Island Fire and Rescue on new rural service center

Vashon Storefront Studio 2012 (external)
UW Dept. of Architecture

Jul. 2, 2012
External article, Seattle Times
Vashon Islanders face $25-a-day fines over septic systems

May 24, 2012
King County, Friends of Island Center Forest seek volunteers for June 16 work party

May 3, 2012
King County, Friends of Island Center Forest seek volunteers for May 12 work party

Mar. 15, 2012
Get the latest on Maury Island park planning and clean-up processes at April 3 meeting

Mar. 14, 2012
Learn forest stewardship via online course, Vashon workshops, from King County and WSU

Feb. 8, 2012
Coastal Flood Hazard Analysis for Vashon and Maury Islands & Sea Level Rise Mapping (external video)

2010-2012 Midterm Report(pdf)
King County Executive Dow Constantine

»Archived news and announcements