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Comparative Evaluation of Drought Indexes: A Case Study on the Yarra River Catchment in Australia

Barua, Shishutosh, Ng, A. W. M and Perera, B. J. C (2011) Comparative Evaluation of Drought Indexes: A Case Study on the Yarra River Catchment in Australia. Journal of Water Resources Planning and Management, 137 (2). pp. 215-226. ISSN 0733-9496 (print) 1943-5452 (online)

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Drought Indexes (DIs) have commonly been used to quantify drought conditions around the world. Most DIs are developed for specific regions and therefore may not be directly applicable to other regions due to inherent complexity of drought phenomena, different hydro-climatic conditions and different catchment characteristics. There had been few studies cited in the literature where suitability of some of the existing DIs was evaluated for different parts of the world. However, no such study was conducted in Australia where droughts are more frequent than elsewhere in the world. In this paper, five DIs namely Percent of Normal (PN), Deciles, Standardized Precipitation Index (SPI), Surface Water Supply Index (SWSI) and Aggregated Drought Index (ADI) were evaluated for the Yarra River catchment in Victoria (Australia). Evaluation was conducted based on how well these indices modeled the historical droughts. Five decision criteria, namely robustness, tractability, sophistication, transparency, and extendability were also used to compare the performance of these DIs. The results showed that the ADI was superior to other indices for drought management within the Yarra River catchment.

Item Type: Article
Uncontrolled Keywords: ResPubID23642, drought, drought indexes, Yarra River catchment, Australia
Subjects: Historical > RFCD Classification > 260000 Earth Sciences
Current > FOR Classification > 0907 Environmental Engineering
Historical > Faculty/School/Research Centre/Department > School of Engineering and Science
Depositing User: VUIR
Date Deposited: 22 Oct 2010 00:27
Last Modified: 02 Aug 2020 23:38
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Citations in Scopus: 36 - View on Scopus

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