Jordan Macha

Executive Director & Waterkeeper

Jordan Macha is the Executive Director and your Bayou City Waterkeeper. A Houston native, Jordan advocates for healthy waters throughout the Galveston Bay watershed, working on wetland protection and urban water management, promoting nature-based systems, and supporting community efforts to improve water quality.

Prior to joining Bayou City Waterkeeper, Jordan advanced coastal restoration and clean energy priorities across the Gulf region while working for the Gulf Restoration Network and the Sierra Club. She received her Master’s of Public Administration with an emphasis on Urban & Coastal Water Management and Policy from Texas State University, and graduated from the University of the South in Sewanee, TN with degrees in Russian and Political Science.

Jordan currently serves as the Harris County representative for the H-GAC Natural Resources Advisory Committee, and is a 2019 fellow for WEA’s Women Environmental Leadership Accelerator Program. Jordan and her husband live near White Oak Bayou, spending their weekends enjoying the bayous and coastal prairies across our region.

You can reach her at:, 713 309 6683 (direct)

Kristen Schlemmer

Legal Director

Kristen Schlemmer joined Bayou City Waterkeeper in July 2018 as its first Legal Director. Drawing on her litigation experience, Kristen works with local communities to protect wetlands, fight for cleaner water, and make their neighborhoods more resilient to flooding and a changing climate.

Before joining Bayou City Waterkeeper, Kristen learned how to try cases at Susman Godfrey, focused on environmental and wildlife law at Irvine & Conner, and clerked for federal judges in Texas and Louisiana. Kristen received a JD from Tulane Law School and BA from UT-Austin and grew up  playing in the forest and drainage ditches of Kingwood in Northeast Harris County after spending her early childhood in Rio de Janeiro, Brazil.

Kristen is a Texas Gulf Coast Master Naturalist and member of New Leaders Council’s 2018 class and serves on New Leaders Council’s local board. Kristen and her family live a short walk from Buffalo Bayou in one of Houston’s oldest houses.

You can reach her at,
281 501 9630 (direct)

Naomi Walker

Mapping Water Injustices Fellow

Naomi joined Bayou City Waterkeeper as its Water Justice Fellow in March 2020. Naomi uses GIS and other analytical tools to root out potential injustices in public infrastructure within our watershed.

Naomi is a graduate student at Texas Southern University pursuing a degree in Urban Planning and Environmental Policy, with a focus on Sustainability and Natural Resources. She has previously worked as an Environmental Research Assistant mapping the nutrient, contaminant, and bacteria levels of Buffalo Bayou. She is passionate about  improving environmental injustices that degrade the health of communities and contribute to global climate change, environmental degradation, and food and water insecurity.

You can reach her at naomi

Anthony D'Souza

Wetland Research Fellow

Anthony D’Souza joined Bayou City Waterkeeper as its Wetland Research Fellowship in August 2020. Anthony supports Bayou City Waterkeeper in protecting wetlands. He reviews wetland destruction permits (404 Clean Water Act applications) for compliance, assembles research, and collects information on the ecological and social implications of development.

Anthony is a senior at Rice University, majoring in Environmental Science with a minor in Politics, Law & Social Thought. He has interned for Bayou City Waterkeeper since the spring 2020 semester, and has previously interned for the Environmental Law Institute, Katy Prairie Conservancy, Citizens’ Climate Lobby, and the Baker Institute working on a variety of environmental policy issues including carbon pricing, nature-based disaster resilience, climate change-induced migration, environmental justice, and conflict sensitivity in environmental programming.

Anthony currently lives in west Houston, having moved there five years ago from Karachi, Pakistan and in his free time enjoys playing soccer and basketball.

You can reach him at

Board of Directors

sharron stewart

Sharron Stewart

Sharron, our current Board Chair, began serving on the Board in 2009.  She is a coastal advocate and educator based in Lake Jackson, and 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 the Columbia Bottoms hardwood forests in Texas.

Popken Passport Photo

David Popken

David, an avid sailor and fisherman, serves as Vice Board Chair and Treasurer. He and his wife, Kris, live on Galveston Bay in Seabrook, where he serves as a member of the City of Seabrook’s Open Spaces and Parks Committee, Galveston Bay Cruising Association, Galveston Bay Foundation, and Audubon Society.

Jorge Bustamante

Jorge, currently serving as Board Secretary, joined the board in 2019. As Project Manager for Harris County Precinct 2, he lives in the Near Northside and utilizes his e-bike and public transit to move around town. Prior to joining BCWK, Jorge was founding member of the Houston Department of Transformation.

Joe Liggio

Joe joined the board in 2015. After a career working for state agencies and corporations, he utilizes his educational and professional experience to compile and analyze data to assist in our programmatic goals. Joe is the author of Wild Orchids of Texas.


Rachel Powers

Rachel began serving on the board in 2019. A long-time Houstonian, and passionate advocate for clean water and the environment, Rachel currently serves as Executive Director of Citizens’ Environmental Coalition, working to foster dialogue and collaboration on environmental issues.

Jen Powis

Jen currently serves as general counsel to the organization, having joined the board in 2014. As Senior Counsel for the Bolder Advocacy Program at Alliance for Justice, and founder of the Powis Firm, she specializes in environmental advocacy services and provides strategic direction for campaigns and programs for a variety of Gulf Coast nonprofits.

Advisory Board

Phil Beckett • Libby Bland • Lindsay Dofelmier • Dr. John Jacob  •  Martin Hamilton  •  Vaness Hamilton