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

Utama, Lusi and Amrizal, Amrizal and Berd, Isril and Zuherna, Zuherna (2019) Effect Land Use Ratio Index to Reduce Flooding: A Case of Jirak Sub-watershed in the Arau Watershed, Padang. In: ICSSIS 2019, 24-25 October 2019, Medan, North Sumatera, Indonesia.

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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%.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: flood land use das discharge ratio index
Subjects: H Social Sciences > H Social Sciences (General)
Depositing User: EAI Editor IV
Date Deposited: 25 Aug 2021 06:57
Last Modified: 25 Aug 2021 06:57
URI: https://eprints.eudl.eu/id/eprint/6173

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