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Latest report

Vashon-Maury Island Hydrologic Modeling Report (2401 Kb Acrobat File)
This report presents the results of the Mike-SHE modeling, which included the development of a time-varying, integrated groundwater-surface water model and an assessment of the impacts of possible future pumping and climate change scenarios on water resources. Published in November 2009.

The VMI GWPC summarizes their perspective on the Water Resources Evaluation project Phase II model use, its limitations, and future work that needs to be done in this overview. July 2010 (1,034 Kb)

Additional Vashon-Maury Island groundwater maps can be found on the Groundwater Maps page.

Data Reports

WRE 2009 Water Resources Data Report (1414 Kb Acrobat File)
This report provides precipitation, stream gauging, water quality and water quantity data from sites monitored on Vashon-Maury Island in 2009. Published in March 2010.

WRE 2008 Water Resources Data Report (1648 Kb Acrobat File)
This report provides precipitation, stream gauging, water quality and water quantity data from sites monitored on Vashon-Maury Island in 2008. Published in December 2009.

WRE 2007 Water Resources Data Report (2648 Kb Acrobat File)
This report provides precipitation, stream gauging, water quality and water quantity data from sites monitored on Vashon-Maury Island in 2007. Published in October 2008.

WRE 2006 Water Resources Data Report (2683 Kb Acrobat File)
This report provides precipitation, stream gauging, water quality and water quantity data from sites monitored on Vashon-Maury Island in 2006. Published in April 2007.

WRE 2005 Water Resources Data Report (839 Kb Acrobat file)
This report provides precipitation, stream gauging, water quality and water quantity data from sites monitored on Vashon-Maury Island in 2005. Published in April 2006

WRE 2005 Well Data Report (2462 Kb Acrobat file)
This data report provides provides drilling activity information, well construction, water level and pumping test data from sites installed in 2005. Published in September 2006.

Vashon-Maury Island Groundwater Model - Phase I (1,007K Acrobat pdf format)
The first model describing groundwater flow for Vashon-Maury Island, published in October 2005.

Waterlevel report April 2004 - Vashon-Maury Island Water Resources Evaluation (151K Acrobat pdf format)
This document describes the status of the waterlevels on Vashon-Maury Island as of April 2004.

Project Documents

Work Plan - Water Resources Evaluation (96K Acrobat pdf format)
This document describes the different components of this project in detail, published October, 2003.

Sampling and Analysis Plan for Vashon-Maury Island Groundwater Management Area (1,173K Acrobat pdf format)
This document describes the groundwater sampling procedures and analytes. This document was written and finalized in 2000.

Addendum for the Sampling and Analysis Plan (87K Acrobat pdf format)
This document describes the proposed changes in groundwater sampling procedures and analytes. This document was written in June 2004.

Other VMI Reports

Vashon-Maury Island Watershed Plan
The watershed plan describing many aspects of Vashon-Maury Island, published June, 2005.

Vashon-Maury Island Water Resource Study
A report describing many aspects of the water resources of Vashon-Maury Island, published 1983.

Educational and Technical Assistance Needs of Small Water Systems on Vashon-Maury Island (3,315K Acrobat pdf format)
This report assesses the Educational and Technical Assistance Needs of Small Water Systems on Vashon-Maury Island. The work was done by S. Kalhorn as part of a VMI watershed grant funded by WA Department of Ecology.

Additional VMI Groundwater data, maps and reports can be found on the Groundwater Maps and Data homepage.

VMI Presentations

VMI_As_data (48K Acrobat pdf format)
This document is part of a poster presented at 6th Washington Hydrogeology Symposium in May 2007. This data is focused on the natural occurring arsenic dissolved in groundwater and the type(speciation) of arsenic present.

NGWA_As_2006 (998K Acrobat pdf format)
This document is the presentation given at a National Ground Water Association conference focusing on the natural occurring contaminations like Arsenic. This presentation includes data from King County including Vashon-Maury Island.

This page is produced by the King County Groundwater Protection Program. To learn more about this group and its responsibilities, please read about the Groundwater Protection Program.