Aplikasi Metode Ambang Bertingkat untuk Analisis Potensi Banjir: Studi Pendahuluan pada 15 DAS di Jawa Timur
(Identification of Potential Flood Flow Using Threshold Level Method: Preliminary Study at 15 Watersheds in East Java)
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Indarto
Jurusan Teknik Pertanian, Universitas Jember, Jember, Indonesia
Sri Wahyuningsih
Jurusan Teknik Pertanian, Universitas Jember, Jember, Indonesia
Muhardjo Pudjojono
Jurusan Teknik Pertanian, Universitas Jember, Jember, Indonesia
Hamid Ahmad
Jurusan Teknik Pertanian, Universitas Jember, Jember, Indonesia
Tino Bachtiar
Jurusan Teknik Pertanian, Universitas Jember, Jember, Indonesia
DOI:
ABSTRACT
This research deals with identification of potential flood discharge from 15 watersheds located in Eastern Part of East Java Province. Recorded times series of daily discharges data are used as main input for the analysis. The discharge data for each watershed are rangked from lowest to high value. Then, the value of discharge correspond to quantile 90% (Q90) is calculated and determined as the threshold level for each watershed. In this case, discharge data more than > Q90 value is categorized as flood events. Then, the frequency of flood events are calculated based on monthly or annual time interval. Furthermore, spatial distribution of flood events are visualized by comparing the frekuency of flood events amongs the watersheds. Finally, thematics maps corresponde to waterheds properties, frequency of flood events, and rainfall event are presented.
Keywords: threshold level method, watersheds, flood indice, East Java
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Published
20-06-2015
Issue
Vol. 9 No. 1 2015: Jurnal Agroteknologi
Pages
13-20
License
Copyright (c) 2015 Jurnal Agroteknologi
How to Cite
Indarto, Wahyuningsih, S., Pudjojono, M., Ahmad, H., & Bachtiar, T. (2015). Aplikasi metode ambang bertingkat untuk analisis potensi banjir: studi pendahuluan pada 15 DAS di Jawa Timur. Jurnal Agroteknologi, 9(1), 13-20.
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