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