Research Line Manager
Research Line Manager


Dr. David Judi, PhD, joined Pacific Northwest National Laboratory (PNNL) in 2015 as a senior research engineer to focus on the development of modeling and simulation tools to understand and quantify infrastructure resilience to extreme events. Dr. Judi received his PhD, MS, and BS in civil and environmental engineering from the University of Utah. Before working at PNNL, Dr. Judi worked at Los Alamos National Laboratory for 9 years. Since 2018, Dr. Judi has been the Earth System Predictability and Resiliency group leader, which consists of approximately 60 research staff with backgrounds in hydrology, civil engineering, mechanical engineering, electrical engineering, material science, and data sciences. From 2019 to 2020, he was the interim director at the Joint Global Change Research Institute. 

Dr. Judi has over 15 years of experience in developing and applying modeling and simulation tools to quantify the response of human systems to extreme hazards, including natural and anthropogenic events. Dr. Judi has primarily focused his research on flood risk, where he has become a nationally recognized expert in fast-response flood modeling. His flood modeling research has led to the development of one of the premiere fast-response flood modeling tools in the United States, now used routinely to support federal, state, and local emergency response activities during extreme events. In addition to using the tools for real-time response, Dr. Judi also leads research activities in understanding future flood risk in urban environments under non-stationary climate conditions, which includes changes in extreme precipitation for pluvial and fluvial flooding and intensity of hurricanes driving storm surges. Dr. Judi also leads research in urban water resilience and security, which includes developing physics-based models and representing dependencies and interdependencies, to understand the consequences of disruption (natural or anthropogenic). Dr. Judi has collaborated with water utilities and emergency planners across the United States to quantify water security and develop mitigation plans to enhance resilience.

Disciplines and Skills

  • Climate Change Impacts

  • Computational Modeling

  • Critical Infrastructure

  • Emergency Management

  • Flood Risk

  • Resiliency

  • Surface Water Modeling

  • Water Distribution

  • Water Security


PhD, Civil and Environmental Engineering, 2009

MS, Civil and Environmental Engineering, 2006

BS, Civil and Environmental Engineering, 2004



Wan H., J.J. Yoon, V.A. Srikrishnan, W.B. Daniel, and D.R. Judi. 2022. "Population downscaling using high-resolution, temporally-rich U.S. Property Data." Cartography and Geographic Information Science 49, no. 1:18-31. PNNL-SA-162765. doi:10.1080/15230406.2021.1991479


Sun N., M.S. Wigmosta, D.R. Judi, Z. Yang, Z. Xiao, and T. Wang. 2021. "Climatological analysis of tropical cyclone impacts on hydrological extremes in the Mid-Atlantic region of the United States." Environmental Research Letters 16, no. 12:Art. No. 124009. PNNL-SA-162671. doi:10.1088/1748-9326/ac2d6a

Xiao Z., Z. Yang, T. Wang, N. Sun, M.S. Wigmosta, and D.R. Judi. 2021. "Characterizing the Non-linear Interactions Between Tide, Storm Surge, and River Flow in the Delaware Bay Estuary, United States." Frontiers in Marine Science 8. PNNL-SA-162723. doi:10.3389/fmars.2021.715557

Xu W., K. Balaguru, A. August, N. Lalo, N.O. Hodas, M. DeMaria, and D.R. Judi. 2021. "Deep Learning Experiments for Tropical Cyclone Intensity Forecasts." Weather and Forecasting 36, no. 4:1453-1470. PNNL-SA-153486. doi:10.1175/WAF-D-20-0104.1


Li X., G. Zhao, J.W. Nielsen-Gammon, J. Salazar, M.S. Wigmosta, N. Sun, and D.R. Judi, et al. 2020. "Impacts of urbanization, antecedent rainfall event, and cyclone tracks on extreme floods at Houston reservoirs during Hurricane Harvey." Environmental Research Letters 15, no. 12:124012. PNNL-SA-153974. doi:10.1088/1748-9326/abc4ff

Shin S., S. Lee, S.J. Burian, D.R. Judi, and T.N. McPherson. 2020. "Evaluating Resilience of Water Distribution Networks to Operational Failures from Cyber-Physical Attacks." Journal of Environmental Engineering (ASCE) 146, no. 3: Article No.04020003. PNNL-SA-147213. doi:10.1061/(ASCE)EE.1943-7870.0001665


Feng Y., C.L. Rakowski, T.N. McPherson, and D.R. Judi. 2019. "A Partition of the Combined Impacts of Socioeconomic Development and Climate Variation on Economic Risks of Riverine Floods." Journal of Flood Risk Management 12, no. S2: Article No. e12508. PNNL-SA-124320. doi:10.1111/jfr3.12508

Lee S., S. Shin, D.R. Judi, T.N. McPherson, and S.J. Burian. 2019. "Criticality analysis of a water distribution system considering both economic consequences and hydraulic loss using Modern Portfolio Theory." Water 11, no. 6: Article number 1222. PNNL-SA-146055. doi:10.3390/w11061222


Balaguru K., G. Foltz, L. Leung, S.M. Hagos, and D.R. Judi. 2018. "On the use of ocean dynamic temperature for hurricane intensity forecasting." Weather and Forecasting 33, no. 2:411-418. PNNL-SA-129386. doi:10.1175/WAF-D-17-0143.1

Judi D.R., C.L. Rakowski, S.R. Waichler, Y. Feng, and M.S. Wigmosta. 2018. "Integrated Modeling Approach for the Development of Climate-Informed, Actionable Information." Water 10, no. 6: Article No. 775. PNNL-SA-134615. doi:10.3390/w10060775

Lee S., S. Shin, S.J. Burian, D.R. Judi, and T.N. McPherson. 2018. "Detectability-Based Resilience of Water Distribution System Using Failure Fingerprint." In 1st International WDSA / CCWI 2018 Joint Conference, July 23-25, 2018, Kingston, Ontario, Canada, 1, Article No. 178. Ontario:Queen's University. PNNL-SA-137376.

Shin S., S. Lee, D.R. Judi, M. Parvania, E. Goharian, T.N. McPherson, and S.J. Burian. 2018. "A Systematic Review of Quantitative Resilience Measures for Water Infrastructure Systems." Water 10, no. 2: Article No. 164. PNNL-SA-132538. doi:10.3390/w10020164.