Prediksi Koefisien DAS Cidurian Pada HSS Snyder

ZULFA, GRACIELA FEBRIYANTI (2023) Prediksi Koefisien DAS Cidurian Pada HSS Snyder. S1 thesis, UNIVERSITAS SULTAN AGENG TIRTAYASA.

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Abstract

Watershed management can be designed starting with knowing and recording the problems that exist in the watershed, the condition of the watershed that continues to deteriorate can trigger natural disasters such as flash floods that occurred in March 2017 and April 2018 Cidurian Watershed in Jasinga District and Cigudeg District. Problems that have occurred in the Cidurian Watershed often coefficient values (peak coefficient, time coefficient, CW75 and CW50) are only based on estimates or previous research so that the calculation of discharge is less accurate and needs further research. This research discusses the prediction of Peak Coefficient (Cp), Time Coefficient (Ct), CW75 and CW50 values in the Cidurian watershed using the Snyder Synthetic Unit Hydrograph and obtaining a calculation graph between the Polynomial and Collins Unit Hydrographs against the Snyder Synthetic Unit Hydrograph in the Cidurian watershed with rainfall data processing using Thiessen Polygon, Mononobe, and Alternating Block Method (ABM). The results showed that the value of Peak Coefficient (Cp) = 0.59, Coefficient of Time (Ct) = 0.09, CW75 = 1.22, CW50 = 2.14, with Peak Discharge (Qp) Collins Measured Unit Hydrograph 19th hour = 1.589 m3/s, and Peak Discharge (Qp) Snyder Synthetic Unit Hydrograph 11,1th hour = 1.59 m3/s.

Item Type:

Thesis (S1)

Contributors:

Contribution	Contributors	NIP/NIM
Thesis advisor	PURNADITYA, NGAKAN PUTU	198909142019031008
Thesis advisor	WIGATI, RESTU	198209252010122002

Additional Information:

Pengelolaan Daerah Aliran Sungai (DAS) dapat dirancang dimulai dengan mengetahui dan mendata permasalahan yang ada didalam Daerah Aliran Sungai (DAS) tersebut, kondisi Daerah Aliran Sungai (DAS) yang terus memburuk dapat memicu terjadinya bencana alam seperti banjir bandang yang terjadi pada bulan Maret 2017 dan April 2018 Daerah Aliran Sungai (DAS) Cidurian di Kecamatan Jasinga dan Kecamatan Cigudeg. Permasalahan yang pernah terjadi dalam Daerah Aliran Sungai (DAS) Cidurian sering kali nilai koefisien (koefisien puncak, koefisien waktu, CW75 dan CW50) hanya berdasarkan perkiraan atau penelitian terdahulu sehingga perhitungan debit kurang akurat dan perlu diteliti lebih lanjut. Penelitian ini membahas tentang prediksi mengenai nilai Koefisien Puncak (Cp), Koefisien Waktu (Ct), CW75 dan CW50 di Daerah Aliran Sungai (DAS) Cidurian dengan menggunakan Hidrograf Satuan Sintetis (HSS) Snyder dan mendapatkan grafik perhitungan antara Hidrograf Satuan Polinomial dan Collins terhadap Hidrograf Satuan Sintetis (HSS) Snyder pada Daerah Aliran Sungai (DAS) Cidurian dengan pengolahan data curah hujan menggunakan metode Poligon Thiessen, Mononobe, dan Alternating Block Method (ABM). Hasil penelitian menunjukkan bahwa nilai Koefisien Puncak (Cp) = 0,59, Koefisien Waktu (Ct) = 0,09, CW75 = 1,22, CW50 = 2,14, dengan Debit Puncak (Qp) Hidrograf Satuan Terukur Collins jam ke-19 = 1,589 m3/d, dan Debit Puncak (Qp) Hidrograf Satuan Sintetis Snyder jam ke-11,1 = 1,59 m3/d.

Subjects:

T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TD Environmental technology. Sanitary engineering

Divisions:

03-Fakultas Teknik
03-Fakultas Teknik > 22201-Jurusan Teknik Sipil

Depositing User:

Mrs Graciela Febriyanti Zulfa

Date Deposited:

25 Sep 2023 15:59

Last Modified:

25 Sep 2023 15:59

URI:

http://eprints.untirta.ac.id/id/eprint/29940

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