Dr. Thomas J. Fikslin is the manager of the Modeling, Monitoring, and Assessment Branch for the Delaware River Basin Commission. The branch is responsible for development and application of hydrodynamic and water quality models, conducting and coordinating monitoring activities to support commission water resource programs within the basin, the development and updating of the commission's water quality standards, and the development and implementation of TMDLs for toxic and conventional pollutants.

Prior to joining DRBC, Dr. Fikslin worked for the U.S. EPA Region II in the regional laboratory and NPDES program.