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All Journal Environmental and Toxicology Management (ETM) Aceh International Journal of Science and Technology
Yusop, Zulkifli
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science Public Health

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Assessment and Prediction of Hydrometeorological Drought in Corong River Basin, Indonesia Affandy*, Nur Azizah; Iranata, Data; Anwar, Nadjadji; Maulana, Mahendra Andiek; Prastyo, Dedy Dwi; Yusop, Zulkifli; Wardoyo, Wasis
Aceh International Journal of Science and Technology Vol 12, No 3 (2023): December 2023
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.12.3.32592

Abstract

Hydrological drought analysis in a river basin is crucial because it impacts water resource management, agriculture, drinking water supply, industry, ecology, and disaster risk mitigation. It plays a key role in water usage planning, safeguarding agricultural yields, and ensuring a stable drinking water supply. In the context of this research, the Corong River basin is used as a case study. This study aims to determine the level of hydrological drought (deficit) using the Threshold Level Method (TLM) and predict hydrological drought using the Seasonal Autoregressive Integrated Moving Average (SARIMA) model. This model understands the characteristics of drought and predicts drought in the Corong River basin for early mitigation and anticipation of drought in the region. The results of this research indicate a strong relationship between the Hydrological Drought Index (HDI) and streamflow and Precipitation (PRCP), which can be used to forecast future droughts. This model is highly robust and accurate in observing the level of hydrological drought (deficit, duration, and sharpness) and predicting drought events in the Corong River basin. These findings have significant practical implications for water management and disaster risk mitigation in this river basin while also advancing the scientific understanding of hydrological drought.
Hydrology method for environmental flows assessment of Johor River Basin under regulated and non-regulated conditions Ab Ghani, Noor Hisham; Yusop, Zulkifli; Mat Amin, Mohd Zaki; Siaw Yin, Thian
Environmental and Toxicology Management Vol. 2 No. 2 (2022): Environmental flows and natural resources management
Publisher : Universitas Nahdlatul Ulama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (267.028 KB) | DOI: 10.33086/etm.v2i2.3423

Abstract

This paper evaluates the capability of hydrology method for environmental flow (Eflow) assessment of Johor river basin under non-regulated and regulated conditions due to dam construction. Daily river flow data from 1971 to 2017 was used for the assessment. Generalized extreme value distribution was applied in order to estimate exceedance probabilities associated with historical observation data at different return periods. Environmental water allocations of the river at different ecological conditions were estimated using the intra-annual and inter-annual flows. This study has estimated the hydrological yearly conditions (very dry, dry, average and wet) for the river basin. Moreover, the method has also successfully proposed the environmental water allocations to achieve the desired ecological conditions, which are very good ecological (Eflow class A), good ecological (Eflow class B), medium ecological (Eflow class C), and deficient ecological conditions (Eflow class D). In general, the proposed method has been capable and acceptable for the assessment of Eflow of Johor river basin in line with sustainable water management goal.
Co-Authors Ab Ghani, Noor Hisham Affandy*, Nur Azizah Data Iranata Dedy Dwi Prastyo Mat Amin, Mohd Zaki Maulana, Mahendra Andiek Nadjadji Anwar Siaw Yin, Thian Wardoyo, Wasis