Please use this identifier to cite or link to this item:
http://repository.ipb.ac.id/handle/123456789/105624
Title: | Estimasi Debit Puncak DAS Ciliwung Hulu |
Other Titles: | Peak Discharge Estimation of Upper Ciliwung Watershed |
Authors: | Wahjunie, Enni Dwi Hidayat, Yayat Dewanti, Kardhina Yulia |
Issue Date: | 2021 |
Publisher: | IPB University |
Abstract: | Debit puncak aliran sungai Ciliwung Hulu merupakan informasi yang sangat
penting dalam perencanaan struktur pengendali banjir dalam periode ulang tertentu.
Namun, Stasiun Pengamat Arus Sungai (SPAS) sebagai sarana pengukur tidak
tersedia pada setiap Sub DAS. Tujuan dari penelitian ini adalah mengkaji akurasi
Model Rasional untuk memprediksi debit puncak dan melakukan pendugaan debit
puncak pada tiap Sub DAS Ciliwung Hulu. Pendugaan debit puncak dilakukan
dengan metode Rasional menggunakan distribusi Gumbel dan Log Pearson tipe III.
Hasil perhitungan menunjukkan metode Rasional memiliki akurasi pendugaan baik
dalam periode ulang T1 hingga T10 tahun yaitu R2 = 0,98; NSE = 0,14 pada
distribusi Gumbel dan R2 = 0,99; NSE = 0,86 pada distribusi Log Pearson tipe III.
Selanjutnya model Rasional dengan distribusi Log Pearson tipe III dipilih sebagai
prediksi debit puncak dalam periode ulang T1 hingga T10, T25, T50 dan T100
tahun pada tujuh Sub DAS Ciliwung Hulu, yaitu Sub DAS Cibalok, Ciesek,
Ciliwung Hulu, Cisarua, Ciseuseupan, Cisukabiru, dan Cisuren. Berdasarkan
pendugaan dengan metode Rational, nilai debit puncak terendah pada periode ulang
1 tahun terjadi di Sub DAS Ciesek yaitu sebesar 2,04 m3/detik dan tertinggi terjadi
di Sub DAS Ciliwung Hulu yaitu sebesar 20,32 m³/detik . The peak discharge of the Upper Ciliwung River is very important for flood control planning structure in a certain return period. However, The River Flow Observation Station (RFOS) as a measuring tool is not available in every Upper Ciliwung Sub watershed. The objectives of this research are to assess the accuracy of Rational method in estimating the peak discharge and to estimate the peak discharge in each Sub watershed. The peak discharge was estimated using Rational method with Gumbel and Log Pearson type III distribution. The result showed that Rational method has a very good estimation accuracy within return period T1 until T10 which are R2 = 0,98; NSE = 0,14 for Gumbel and R2 = 0,99; NSE = 0,86 for Log Pearson type III. Furthermore, the Rational model with Log Pearson type III distribution is choosen to estimate the peak discharge within return period T1 until T10, T25, T50, and T100 in the seven Upper Ciliwung Watershed, which are Cibalok, Ciesek, Ciliwung Hulu, Cisarua, Ciseuseupan, Cisukabiru, and Cisuren Sub Watershed. Based on the peak discharge estimation using Rational method, the lowest value was within return period 1 year which is 2,04 m3/s in Ciesek Sub Watershed and the highest value was within return periode 100 year which is 97,11 m3/s in Upper Ciliwung Sub Watershed. |
URI: | http://repository.ipb.ac.id/handle/123456789/105624 |
Appears in Collections: | UT - Soil Science and Land Resources |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Cover, Lembar Pernyataan, Abstrak, Lembar Pengesahan, Prakata, Daftar Isi.pdf Restricted Access | Cover | 1.37 MB | Adobe PDF | View/Open |
A14160043_Kardhina Yulia Dewanti.pdf Restricted Access | Fullteks | 1.94 MB | Adobe PDF | View/Open |
Lampiran.pdf Restricted Access | Lampiran | 1.65 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.