Board Members

Dr. John Jacob is the Board’s chair and began serving the board in 2008.  John directs the Texas Coastal Watershed Program currently at Texas A&M University and provides education to local governments on the impact of land use on water quality.  John's professional interests include watershed management, sustainable urban development, wetlands, runoff pollution, natural resource mapping and assessment, and soil science.  John received a BS in Soil Science and an MS in Soil Science (Pedology and Mineralogy) from Texas Tech University, and a Ph.D. in Pedology from Texas A&M University.

Joe Liggio has a master’s in environmental science and provides geographic information system (GIS) mapping capacity and experience to Galveston Baykeeper.  After a career working for state agencies and corporations, Mr. Liggio utilizes his educational and professional experience to compile and analyze data for the Wetland Watch program for regulatory agencies.  Mr. Liggio also engages in the permit review and regulatory review of proposed state-wide rules for the organization. 

Sharron Stewart began serving on the Board in 2009.  She is a coastal advocate and educator based in Lake Jackson.  She has worked with many national, state, and local agencies to preserve and protect the coastal environment, including the U.S. Fish and Wildlife Service in its effort to protect examples of the Columbia Bottoms hardwood forests.  In the non-profit realm, Sharron has served on the boards of the Galveston Bay Foundation, Gulf Coast Fisherman's Environmental Defense Fund, San Jacinto Lung Association, Texas Committee on Natural Resources, Texas League of Conservation Voter, and the Texas Environmental Coalition.

Martin Hamilton began serving on the board in 2014.  Martin as a youth spent time swimming in the upper part of Buffalo Boyou, and has been sailing on Galveston Bay for most of his life.  Martin acts as the board’s treasurer and IT specialist.

Jen Powis is an attorney and was appointed to the board in 2014.  She currently serves as general counsel to the organization.  An active advocate for the environment, Jen focuses on the legal and policy comments for GBK as well as communicating the regulatory framework to GBK’s supporters and members.


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