Hydrological drought index based on reservoir capacity – Case study of Batujai dam in Lombok Island, West Nusa Tenggara, Indonesia
Hydrological drought index analysis has been widely developed and applied for the development of water resources. The island of Lombok, which is largely a dry land, requires a significant hydrological drought index to be sourced from measurable data analysis. This research focused aims to obtain hyd...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2018-09-01
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| Series: | Journal of Water and Land Development |
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| Online Access: | http://www.degruyter.com/view/j/jwld.2018.38.issue-1/jwld-2018-0052/jwld-2018-0052.xml?format=INT |
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| author | Yasa I Wayan Bisri Mohammad Sholichin Moch Andawayanti Ussy |
| author_facet | Yasa I Wayan Bisri Mohammad Sholichin Moch Andawayanti Ussy |
| author_sort | Yasa I Wayan |
| collection | DOAJ |
| description | Hydrological drought index analysis has been widely developed and applied for the development of water resources. The island of Lombok, which is largely a dry land, requires a significant hydrological drought index to be sourced from measurable data analysis. This research focused aims to obtain hydrological drought index in Lombok Island using the capacity change of reservoir. The analysis includes reservoir data especially in the event of El-Nino. The main parameters analysed in this work are data homogeneity, decrease line of reservoir volume, increase in the line of reservoir volume, reservoir volume deficit, and hydrological drought index (RDI). The basic equation uses the water balance in the reservoir, which is the inflow–outflow and change of reservoir. The results of the analysis show that in the event of El-Nino, the drought hydrological index indicates different levels depending upon the water level of the reservoir. The criteria for the drought level are as follows: weak RDI = from −0.46 to −0.01 at an reservoir elevation of 90.88 to 92.33 m a.s.l, moderate RDI: from −0.59 to −0.46 at water level of reservoir from 90.27 to 90.88 m a.s.l, sever RDI: from −0.80 to −0.59 at water level of reservoir from 88.83 to 90.27 m a.s.l. and very severe RDI: from −0.89 to −0.80 at water level of water reservoir 87.78–88.83 m a.s.l. The duration of drought was 9 months, i.e., from February to November. |
| first_indexed | 2024-03-12T18:45:34Z |
| format | Article |
| id | doaj.art-4f2fb9d11bd94975bbe6abc8cf361ab9 |
| institution | Directory Open Access Journal |
| issn | 2083-4535 |
| language | English |
| last_indexed | 2024-03-12T18:45:34Z |
| publishDate | 2018-09-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Journal of Water and Land Development |
| spelling | doaj.art-4f2fb9d11bd94975bbe6abc8cf361ab92023-08-02T07:40:12ZengPolish Academy of SciencesJournal of Water and Land Development2083-45352018-09-0138115516210.2478/jwld-2018-0052jwld-2018-0052Hydrological drought index based on reservoir capacity – Case study of Batujai dam in Lombok Island, West Nusa Tenggara, IndonesiaYasa I Wayan0Bisri Mohammad1Sholichin Moch2Andawayanti Ussy3University of Mataram, Jl. Majapahit No. 62, 83125 Mataram, IndonesiaBrawijaya University,IndonesiaBrawijaya University,IndonesiaBrawijaya University,IndonesiaHydrological drought index analysis has been widely developed and applied for the development of water resources. The island of Lombok, which is largely a dry land, requires a significant hydrological drought index to be sourced from measurable data analysis. This research focused aims to obtain hydrological drought index in Lombok Island using the capacity change of reservoir. The analysis includes reservoir data especially in the event of El-Nino. The main parameters analysed in this work are data homogeneity, decrease line of reservoir volume, increase in the line of reservoir volume, reservoir volume deficit, and hydrological drought index (RDI). The basic equation uses the water balance in the reservoir, which is the inflow–outflow and change of reservoir. The results of the analysis show that in the event of El-Nino, the drought hydrological index indicates different levels depending upon the water level of the reservoir. The criteria for the drought level are as follows: weak RDI = from −0.46 to −0.01 at an reservoir elevation of 90.88 to 92.33 m a.s.l, moderate RDI: from −0.59 to −0.46 at water level of reservoir from 90.27 to 90.88 m a.s.l, sever RDI: from −0.80 to −0.59 at water level of reservoir from 88.83 to 90.27 m a.s.l. and very severe RDI: from −0.89 to −0.80 at water level of water reservoir 87.78–88.83 m a.s.l. The duration of drought was 9 months, i.e., from February to November.http://www.degruyter.com/view/j/jwld.2018.38.issue-1/jwld-2018-0052/jwld-2018-0052.xml?format=INTdroughtEl-Ninohydrological drought indexinflowoutflowreservoir |
| spellingShingle | Yasa I Wayan Bisri Mohammad Sholichin Moch Andawayanti Ussy Hydrological drought index based on reservoir capacity – Case study of Batujai dam in Lombok Island, West Nusa Tenggara, Indonesia Journal of Water and Land Development drought El-Nino hydrological drought index inflow outflow reservoir |
| title | Hydrological drought index based on reservoir capacity – Case study of Batujai dam in Lombok Island, West Nusa Tenggara, Indonesia |
| title_full | Hydrological drought index based on reservoir capacity – Case study of Batujai dam in Lombok Island, West Nusa Tenggara, Indonesia |
| title_fullStr | Hydrological drought index based on reservoir capacity – Case study of Batujai dam in Lombok Island, West Nusa Tenggara, Indonesia |
| title_full_unstemmed | Hydrological drought index based on reservoir capacity – Case study of Batujai dam in Lombok Island, West Nusa Tenggara, Indonesia |
| title_short | Hydrological drought index based on reservoir capacity – Case study of Batujai dam in Lombok Island, West Nusa Tenggara, Indonesia |
| title_sort | hydrological drought index based on reservoir capacity case study of batujai dam in lombok island west nusa tenggara indonesia |
| topic | drought El-Nino hydrological drought index inflow outflow reservoir |
| url | http://www.degruyter.com/view/j/jwld.2018.38.issue-1/jwld-2018-0052/jwld-2018-0052.xml?format=INT |
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