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

LUSI, UTAMA (2021) Effect Land Use Ratio Index to Reduce Flooding: A Case of Jirak Sub-watershed in the Arau Watershed, Padang. Effect Land Use Ratio Index to Reduce Flooding: A Case of Jirak Sub-watershed in the Arau Watershed, Padang.

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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%. Keywords flood land use das discharge ratio index

Item Type: Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Fakultas Teknik Sipil dan Perencanaan > Teknik Sipil
Depositing User: Hermanto Hermanto
Date Deposited: 07 May 2021 07:41
Last Modified: 07 May 2021 07:41
URI: http://repo.bunghatta.ac.id/id/eprint/3744

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