Proceedings of the 2nd International Conference on Social Sciences and Interdisciplinary Studies (formerly ICCSSIS), ICCSIS 2019, 24-25 October 2019, Medan, North Sumatera, Indonesia

Research Article

Effect Land Use Ratio Index to Reduce Flooding: A Case of Jirak Sub-watershed in the Arau Watershed, Padang

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  • @INPROCEEDINGS{10.4108/eai.24-10-2019.2290602,
        author={Lusi  Utama and Amrizal  Amrizal and Isril  Berd and Zuherna  Zuherna},
        title={Effect Land Use Ratio Index to Reduce Flooding: A Case of  Jirak Sub-watershed in the Arau Watershed, Padang },
        proceedings={Proceedings of the 2nd International Conference on Social Sciences and Interdisciplinary Studies (formerly ICCSSIS), ICCSIS 2019, 24-25 October 2019, Medan, North Sumatera, Indonesia},
        publisher={EAI},
        proceedings_a={ICSSIS},
        year={2019},
        month={12},
        keywords={flood land use das discharge ratio index},
        doi={10.4108/eai.24-10-2019.2290602}
    }
    
  • Lusi Utama
    Amrizal Amrizal
    Isril Berd
    Zuherna Zuherna
    Year: 2019
    Effect Land Use Ratio Index to Reduce Flooding: A Case of Jirak Sub-watershed in the Arau Watershed, Padang
    ICSSIS
    EAI
    DOI: 10.4108/eai.24-10-2019.2290602
Lusi Utama1,*, Amrizal Amrizal2, Isril Berd2, Zuherna Zuherna2
  • 1: Civil Engineering Doctoral Program at Andalas University, Indonesia
  • 2: Department of Agriculture Andalas University, Indonesia2,3
*Contact email: lusi_utamaindo115@yahoo.co.id

Abstract

The flood may occur for both climatology and human action factors. The climatology factors can be in the form of land degradation, land-use changes, and population increase. The land-use changes can be identified when there is a conversion of the recharge area into a built area. When the population increases, space needed also enlarges. The Jirak located in the Arau watershed in Padang. In analyzing it, this study applied a descriptive quantitative method. The image used in the map is analyzed with Arcgis 10 to get a flood-prone map. The rainfall is calculated by using methods of Gumbel, and Log Pearson III, the debit is calculated by using rational. The difference discharge between these is 7.469 m3/second. It is necessary to regulate the type and use of land to reduce flooding by 7.469 m3/sec with a housing index ratio of 24.68% and plantations of 43.39%.