ANALISIS CURAH HUJAN DAN DEBIT MODEL SWAT DENGAN METODE MOVING AVERAGE DI  DAS CILIWUNG HULU

Defri Satiya Zuma; Kukuh Murtilaksono; Yuli Suharnoto

doi:10.29244/jpsl.7.2.98-106

Defri Satiya Zuma, Kukuh Murtilaksono, Yuli Suharnoto

https://doi.org/10.29244/jpsl.7.2.98-106

Issue
Vol. 7 No. 2 (2017): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)

Accepted
4 September 2017

Published
4 September 2017

PDF (Bahasa Indonesia)

Abstract

Watershed can be regarded as a hydrological system that has a function in transforming rainwater as an input into outputs such as flow and sediment. The transformation of inputs into outputs has specific forms and properties. The transformation involves many processes, including processes occurred on the surface of the land, river basins, in soil and aquifer. This study aimed to apply the SWAT model in Ciliwung Hulu Watershed, asses the effect of average rainfall on 3 days, 5 days, 7 days and 10 days of the hydrological characteristics in Ciliwung Hulu Watershed. The correlation coefficient (r) between rainfall and discharge was positive, it indicated that there was an unidirectional relationship between rainfall and discharge in the upstream, midstream and downstream of the watershed. The upper limit ratio of discharge had a downward trend from upstream to downstream, while the lower limit ratio of discharge had an upward trend from upstream to downstream. It showed that the discharge peak in Ciliwung Hulu Watershed from upstream to downstream had a downward trend while the baseflow from upstream to downstream had an upward trend. It showed that the upstream of Ciliwung Hulu Watershed had the highest ratio of discharge peak and baseflow so it needs the soil and water conservations and technical civil measures. The discussion concluded that the SWAT model could be well applied in Ciliwung Hulu Watershed, the most affecting average rainfall on the hydrological characteristics was the average rainfall of 10 days. On average rainfall of 10 days, all components had contributed maximally for river discharge.

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Authors

Defri Satiya Zuma

Bogor Agricultural University

foresternoxy@gmail.com (Primary Contact)

Kukuh Murtilaksono

Yuli Suharnoto

ZumaD. S., MurtilaksonoK. and SuharnotoY. (2017) “ANALISIS CURAH HUJAN DAN DEBIT MODEL SWAT DENGAN METODE MOVING AVERAGE DI DAS CILIWUNG HULU”, Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management). Bogor, ID, 7(2), pp. 98-106. doi: 10.29244/jpsl.7.2.98-106.

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