Mayor of Arlington, Texas
City Manager, City of Lewisville
Executive Manager of Technical Services and Basin Planning, Trinity River Authority, Arlington
Chief of Water Resources, US Army Corps of Engineers, Fort Worth District
Associate Principal and Technical Director, Water for North America in Arup
Director & Distinguished Professor-University of Arkansas Community Design Center, Steven L. Anderson Chair in Architecture and Urban Studies
Texas State Climatologist, Texas A&M University
Fund Development Coordinator, River Legacy Living Science Center
Dean of CAPPA and the UNESCO Chair on Water and Human Settlements.