Articles | Volume 386
https://doi.org/10.5194/piahs-386-237-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/piahs-386-237-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
A tale of two floods: Hawkesbury-Nepean valley floods of February 2020 and March 2021
Research, Science and Innovation Group, Australian Bureau of Meteorology, Melbourne, 3008, Australia
Katayoon Bahramian
Research, Science and Innovation Group, Australian Bureau of Meteorology, Melbourne, 3008, Australia
Kesav Unnithan
ITB-Monash Research Academy, Mumbai 400076, India
Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India
Department of Civil Engineering, Monash University, Clayton, VIC 3168, Australia
Christoph Rüdiger
Research, Science and Innovation Group, Australian Bureau of Meteorology, Melbourne, 3008, Australia
Jiawei Hou
Research, Science and Innovation Group, Australian Bureau of Meteorology, Melbourne, 3008, Australia
Christopher Pickett-Heaps
Research, Science and Innovation Group, Australian Bureau of Meteorology, Melbourne, 3008, Australia
Elisabetta Carrara
Research, Science and Innovation Group, Australian Bureau of Meteorology, Melbourne, 3008, Australia
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Short summary
Two flood events occurred in the Hawkesbury-Nepean valley in 2020 and 2021, however, the impact of each of those events was different in terms of lives lost (2 fatalities compared to none) and economic losses (more than 2 billion compared to less than 1 billion AUD). Reasons for the variation in impacts are explored by determining the inundation extents, and examining antecedent and climatic conditions. We found that antecedent conditions exerted a major control on the size of the impact.
Two flood events occurred in the Hawkesbury-Nepean valley in 2020 and 2021, however, the impact...