John DeGeorge joined RMA in 1994 and has played a leadership role in formulating, developing and applying numerical models for the US Army Corps of Engineers (USACE) and other federal, state, and local agencies. He has led RMA’s software development work for the USACE Hydrologic Engineering Center (HEC), and has contributed to many of HEC’s current water resources engineering applications. He is the primary author of the multidimensional particle tracking model compatible with the RMA finite element modeling system, primary author of the HEC-ResSim reservoir system simulation model, and developer of graphical user interfaces and decision-support systems for other surface water modeling tools. In addition, John has managed numerous applications of the RMA San Francisco Bay-Delta Model for analysis of hydrodynamics, water quality, sediment and particle transport in the Sacramento-San Joaquin Delta. John is a California-licensed professional engineer. He earned his bachelor’s degree in civil engineering from California State University, Chico and his master’s and doctorate degrees in civil and environmental engineering at the University of California, Davis.