Civil EngineeringHydrologyHydraulicsSedimentation


Wayne W. Chang, M.S., P.E.

P.O. Box 9496

Rancho Santa Fe, CA 92067-4496

(858) 692-0760

(858) 832-1402 Fax



Wayne W. Chang obtained his Bachelor of Science degree in civil engineering from the University of California, Berkeley, and his Master of Science degree in civil engineering from the Massachusetts Institute of Technology. He is a registered civil engineer in California and Arizona.


Mr. Chang specializes in water resources and has extensive experience in hydrology, hydraulics, and sedimentation as well as the National Pollutant Discharge Elimination System (NPDES) regulations and requirements. His experience includes the design and analysis of storm drain systems, storm water quality best management practices, floodplains, floodways, channel improvements, channel protection, drop structures, check dams, levees, culverts, bridges as well as detention, retention, and desiltation basins. He is very familiar with the Hydrologic Engineering Centerís HEC-1, HEC-HMS, HEC-2, and HEC-RAS models. He is also very familiar with the Water Surface Pressure Gradient (WSPG), FLUVIAL-12, and Finite Element Surface Water Modeling System (FESWMS) models.


Mr. Chang has processed projects through many local agencies, the Federal Emergency Management Agency, the US Army Corps of Engineers, the US Fish & Wildlife Service, the US Environmental Protection Agency, the California Division of Safety of Dams, the State Lands Commission, the California Coastal Commission, and the Regional Water Quality Control Board.


Mr. Chang has published water resources journal articles, presented conference papers and workshops, provided expert witness testimony, taught both undergraduate and graduate-level courses, taught water resources review courses for the Professional Engineer exam, was past Vice-Chairman of the Floodplain Management Association, and served on the editorial board of the Journal of Floodplain Management.




Howard H. Chang, Ph.D., P.E.

P.O. Box 9492

Rancho Santa Fe, CA 92067-4492

(858) 756-9050

(858) 756-9460 Fax

(SDSU Web-site)


Department of Civil and Environmental Engineering

Dr. Howard H. Chang is a Professor Emeritus from the Civil and Environmental Engineering Department at San Diego State University, and a registered civil engineer in California and Arizona. He taught 17 different courses at San Diego State University in his career of over 40 years. The courses have included E 120 Engineering Problem Analysis, CE 444 Applied Hydraulics, CE 495 Civil Engineering Design, CE 530 Open Channel Hydraulics, and CE 638 Sedimentation and River Engineering.


Dr. Howard H. Chang has provided professional consulting since 1967. He has performed extensive research in the area of water resources engineering pertaining to river hydraulics, sedimentation, and erosion. He has published over 100 refereed papers in journals and conference proceedings. He is the author of several computer models for channel design and river hydraulics as well as the book, Fluvial Processes in River Engineering, published in 1988 by John Wiley & Sons.This book has been adopted as a graduate text at several universities.


Dr. Chang has been active in floodplain mapping, hydrology and watershed modeling, hydrological simulation, flood control channel design, floodwater detention basin and sediment basin design, river channel erosion analyses, and sedimentation studies. He has developed major computer programs. Among them, the FLUVIAL-12 program for river sedimentation was evaluated by the National Academy of Sciences as a national standard for river engineering. The program is now used worldwide by professionals to simulate stream scour for the design of channels and hydraulic structures such as bridges and levees.