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Efect of frequent bushfre on water supply reliability in Thomson Catchment, Victoria, Australia

Melbourne’s water supply is dependent on forested catchments; consequently, frequent occurrence of fre events in these catchments will have detrimental efects on water supply reliability of Melbourne. This study analyses the efect of frequent bushfre events to estimate the reduction in the water yie...

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Main Authors: Anirban Khastagir, Anirban Khastagir, Iqbal Hossain, Iqbal Hossain, Siti Nazahiyah Rahmat, Siti Nazahiyah Rahmat
Format: Article
Language:English
Published: Springer 2023
Subjects:
T Technology (General)
Online Access:http://eprints.uthm.edu.my/10462/1/J15918_d1961c2b4048d491be43af5573024980.pdf
http://eprints.uthm.edu.my/10462/
https://doi.org/10.1007/s00704-023-04443-y
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spelling my.uthm.eprints.104622023-11-27T07:20:13Z http://eprints.uthm.edu.my/10462/ Efect of frequent bushfre on water supply reliability in Thomson Catchment, Victoria, Australia Anirban Khastagir, Anirban Khastagir Iqbal Hossain, Iqbal Hossain Siti Nazahiyah Rahmat, Siti Nazahiyah Rahmat T Technology (General) Melbourne’s water supply is dependent on forested catchments; consequently, frequent occurrence of fre events in these catchments will have detrimental efects on water supply reliability of Melbourne. This study analyses the efect of frequent bushfre events to estimate the reduction in the water yield after a major bushfre event in the Thomson reservoir, which is the largest reservoir supplying water to Melbourne. The Forest Fire Danger Index (FFDI) which is a measure of fre behaviour was used to carry out fre frequency analysis to estimate the frequency of occurrence of a bushfre with certain severity in the catchment area. Seven hypothetical scenarios were adopted to estimate the total water yield in 2010 after the 1939 bushfres considering the presence of manifold species in diferent parts of the Thomson catchment; subsequently, reduction in water yield was calculated for the catchment if a certain percentage of the catchment was burnt once every 10 years after 2010. If 10% of the Ash is burnt every 10 years, the percentage reduction in total water yield varies from 12.2 to 13.9% in 2050 for all seven scenarios considered in the analysis; similarly, the percentage reductions in water yield only from Ash species varies from 21.2 to 23.1% in 2050, if 10% of the Ash is burnt every 10 years. It is expected that improved cognizance of the efect of extreme bushfre events on water yield of Thomson catchment due to frequent bushfre events based on the fndings from the existing study will facilitate the adequate preparedness for risks associated with frequent bushfre events in Victoria’s water supply catchments. Springer 2023 Article PeerReviewed text en http://eprints.uthm.edu.my/10462/1/J15918_d1961c2b4048d491be43af5573024980.pdf Anirban Khastagir, Anirban Khastagir and Iqbal Hossain, Iqbal Hossain and Siti Nazahiyah Rahmat, Siti Nazahiyah Rahmat (2023) Efect of frequent bushfre on water supply reliability in Thomson Catchment, Victoria, Australia. Theoretical and Applied Climatology. pp. 967-979. https://doi.org/10.1007/s00704-023-04443-y
institution Universiti Tun Hussein Onn Malaysia
building UTHM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tun Hussein Onn Malaysia
content_source UTHM Institutional Repository
url_provider http://eprints.uthm.edu.my/
language English
topic T Technology (General)
spellingShingle T Technology (General)
Anirban Khastagir, Anirban Khastagir
Iqbal Hossain, Iqbal Hossain
Siti Nazahiyah Rahmat, Siti Nazahiyah Rahmat
Efect of frequent bushfre on water supply reliability in Thomson Catchment, Victoria, Australia
description Melbourne’s water supply is dependent on forested catchments; consequently, frequent occurrence of fre events in these catchments will have detrimental efects on water supply reliability of Melbourne. This study analyses the efect of frequent bushfre events to estimate the reduction in the water yield after a major bushfre event in the Thomson reservoir, which is the largest reservoir supplying water to Melbourne. The Forest Fire Danger Index (FFDI) which is a measure of fre behaviour was used to carry out fre frequency analysis to estimate the frequency of occurrence of a bushfre with certain severity in the catchment area. Seven hypothetical scenarios were adopted to estimate the total water yield in 2010 after the 1939 bushfres considering the presence of manifold species in diferent parts of the Thomson catchment; subsequently, reduction in water yield was calculated for the catchment if a certain percentage of the catchment was burnt once every 10 years after 2010. If 10% of the Ash is burnt every 10 years, the percentage reduction in total water yield varies from 12.2 to 13.9% in 2050 for all seven scenarios considered in the analysis; similarly, the percentage reductions in water yield only from Ash species varies from 21.2 to 23.1% in 2050, if 10% of the Ash is burnt every 10 years. It is expected that improved cognizance of the efect of extreme bushfre events on water yield of Thomson catchment due to frequent bushfre events based on the fndings from the existing study will facilitate the adequate preparedness for risks associated with frequent bushfre events in Victoria’s water supply catchments.
format Article
author Anirban Khastagir, Anirban Khastagir
Iqbal Hossain, Iqbal Hossain
Siti Nazahiyah Rahmat, Siti Nazahiyah Rahmat
author_facet Anirban Khastagir, Anirban Khastagir
Iqbal Hossain, Iqbal Hossain
Siti Nazahiyah Rahmat, Siti Nazahiyah Rahmat
author_sort Anirban Khastagir, Anirban Khastagir
title Efect of frequent bushfre on water supply reliability in Thomson Catchment, Victoria, Australia
title_short Efect of frequent bushfre on water supply reliability in Thomson Catchment, Victoria, Australia
title_full Efect of frequent bushfre on water supply reliability in Thomson Catchment, Victoria, Australia
title_fullStr Efect of frequent bushfre on water supply reliability in Thomson Catchment, Victoria, Australia
title_full_unstemmed Efect of frequent bushfre on water supply reliability in Thomson Catchment, Victoria, Australia
title_sort efect of frequent bushfre on water supply reliability in thomson catchment, victoria, australia
publisher Springer
publishDate 2023
url http://eprints.uthm.edu.my/10462/1/J15918_d1961c2b4048d491be43af5573024980.pdf
http://eprints.uthm.edu.my/10462/
https://doi.org/10.1007/s00704-023-04443-y
_version_ 1783880442950189056
score 13.211869

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