HydroClimExHydroclimate Extremes LabWestern University

People / Principal investigator

Portrait of Professor Reza Najafi

Reza Najafi

Professor, Department of Civil and Environmental Engineering, Western University
Director, HydroClimEX Lab
Cofounder and co-director, Centre for Multihazard Risk and Resilience

PhD, P.Eng. Associate Editor, Water Resources Research (AGU) and Weather and Climate Extremes

Biography

Reza Najafi is a Professor of Civil and Environmental Engineering at Western University, where he leads the Hydroclimate Extremes and Climate Change Lab. His research addresses nonstationary hydroclimatic extremes, compound and cascading hazards, and the risk they pose to infrastructure under climate change.

Before joining Western in 2017 he was a postdoctoral fellow and research scientist at the Pacific Climate Impacts Consortium, University of Victoria, and a postdoctoral researcher at the Byrd Polar Research Center, Ohio State University. He received his PhD from Portland State University in 2013, and earlier worked as a water resources engineer.

He has authored about 80 peer-reviewed journal articles and supervised more than 40 graduate students and postdoctoral fellows. He is a co-lead author of the water cycle chapter of Canada's Changing Climate Report 2026, and co-founded Western's Centre for Multihazard Risk and Resilience, which brings together about 20 faculty members across three faculties.

Appointments

2026
Professor, Western University
2022
Associate Professor, Western University
2017
Assistant Professor, Western University
2015
Research Scientist, Pacific Climate Impacts Consortium
2013
Postdoctoral Fellow, Pacific Climate Impacts Consortium; Postdoctoral Researcher, Byrd Polar Research Center

Education

2013
PhD, Civil and Environmental Engineering, Portland State University
2007
MSc, Civil Engineering, K.N. Toosi University of Technology
2004
BSc, Civil Engineering, Shahid Beheshti University

Selected honours

  • Faculty Scholar Award, Western University, 2026 to 2028
  • Top 10% most-read article, International Journal of Climatology, 2026
  • JSPS Invitational Fellowship, Kyoto University, 2025 to 2026
  • Ontario Engineering Project Award, academic partner for the York Region flood risk model, 2025
  • Ontario Early Researcher Award, 2024
  • Best Technical Paper Award, ASCE Journal of Hydrologic Engineering, 2017

Service and leadership

  • Associate Editor, Water Resources Research (AGU)
  • Associate Editor, Weather and Climate Extremes
  • Co-lead author, Canada's Changing Climate Report 2026, Chapter 5
  • Cofounder and co-director, Centre for Multihazard Risk and Resilience
  • Contributor, ASCE compound flooding manual of practice and the CSA W224 implementation guide

Selected keynotes and invited talks

  • Characterizing compound hydroclimatic extremes and flood risk under climate change, Disaster Prevention Research Institute, Kyoto University

  • Compound flood and drought hazards in a changing climate, WaterTalks, Water Institute, University of Waterloo

  • Climate-driven cascading risks, Global Congress on Climate Change, Berlin (keynote)

  • Dynamic risk assessment of critical infrastructure networks, World Summit on Engineering and Civil Infrastructure, Rome (keynote)

  • Dynamic assessment of compound flood risks, Global Congress on Climate Change, Lisbon (keynote)