Ryan Smith, Director of Water and Science, The Nature Conservancy of Texas Ryan Smith has over twenty years of professional experience in freshwater conservation. His areas of expertise include environmental flows, freshwater ecology, groundwater/surface water science, conservation planning, ecological monitoring, and geospatial analysis. Ryan leads The Nature Conservancy of Texas’ water program and science team.…

Web Mangham is the Environmental Services and Water Resources Planning Manager for the Trinity River Authority of Texas and has worked at the Authority for 17 years. Mr. Mangham holds a B.A. in Communications from the University of Central Oklahoma and M.S. in Applied Geography, Water Resources Management from the University of North Texas. Mr.…

Cindy Loeffler received a B.S. in Engineering from Colorado State University in 1984. After working with the USFWS Instream Flow Group for several years, Ms. Loeffler joined the Texas Parks and Wildlife Department’s Resource Protection Division as a coastal hydrologist in 1987. From 1987 to 2001 she worked as part of an interagency team tasked…

Chair of Committee

Dan Opdyke has a Ph.D. in Environmental and Water Resources Engineering from The University of Texas at Austin and more than 20 years of experience studying issues and solving problems related to water in Texas. As a consultant for Anchor QEA, he has built several state-of-the-science water quality models to help address a wide variety…

General Counsel

General Counsel Joe Cole provides legal counsel, opinions, and legal services related to GBRA’s responsibilities and operations, serving as an advisor to the Board of Directors and the General Management team. Cole also manages litigation and outside counsel activities while overseeing the development and review of policies, contracts and other corporate and legal agreements Cole…

Emanuel Valdez

Director

Comal County Appointed: 2021 Term Expiration: 2023 Emanuel Valdez, of New Braunfels, is a Software Consulting Manager with BMC Software, INC. and an active volunteer with the Vintage Oaks Veterans Organization. Valdez honorably retired from the United States Army Reserves after thirty years of service as a Command Sergeant Major. He holds a certification in…

Sheila L. Old

Director

Guadalupe County Appointed: 2021 Term Expiration: 2027 Sheila L. Old, a resident of Seguin, is president of The Old Law Firm, where she also serves as a practicing attorney. She is vice president of the Guadalupe County Bar Association and is a member of the State Bar of Texas, Texas Association of Family Defense Attorneys…

Randy Staats

Executive Manager of Finance/CFO

Executive Manager of Finance/CFO Randy Staats is responsible for the overall management of the finance department, leading all accounting and finance efforts including budget and financial plans, payroll, accounts payable & receivable, treasury & investments, risk management, purchasing, grant writing, records management, capital assessments, debt administration & planning, and financial reserves. He is also responsible…

Nathan Pence

Executive Manager of Environmental Science

Executive Manager of Environmental Science Nathan Pence leads the Guadalupe-Blanco River Authority’s environmental stewardship initiatives while overseeing strategic planning and day-to-day operations for the Canyon Lake Gorge and Water Quality Lab. Pence leads the administration of the Clean Rivers Program for the Guadalupe River and Lavaca-Guadalupe Coastal basins, in partnership with the Texas Commission on…

Vanessa Z. Guerrero

Executive Manager of Administration

Executive Manager of Administration Vanessa Guerrero oversees a diverse array of internal and external services, including human resources, communications, education, safety, strategic planning, community affairs, customer service, government relations and information technology. Guerrero directs the development of long-range strategic plans and initiatives, while overseeing training and recruitment, educational outreach, internal and external communications efforts and…

Charles M. Hickman, P.E.

Executive Manager of Engineering

Executive Manager of Engineering Charles “Charlie” Hickman directs the design and construction of capital improvement projects, oversees water resource planning and provides operational assistance on technical procedures and issues related to existing Guadalupe-Blanco River Authority facilities and structures. Hickman also leads the monitoring of flow conditions throughout the Guadalupe River Basin, interpretation of hydrologic events…