ANALISIS HIDROGRAF SATUAN SINTETIK NAKAYASU DAN SNYDER PADA DAERAH ALIRAN SUNGAI CIKANDANG, JAWA BARAT

JULIANA, SISKA (2020) ANALISIS HIDROGRAF SATUAN SINTETIK NAKAYASU DAN SNYDER PADA DAERAH ALIRAN SUNGAI CIKANDANG, JAWA BARAT. S1 thesis, Universitas Mercu Buana Jakarta.

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Abstract

Cikandang River as a study location, is one of the rivers located in Jati Wangi Village, Pakenjeng District, Garut Regency, West Java. the existence of water discharge there will determine its usefulness for the lives of the surrounding community. With the use of a very large land use plan, the amount of water discharge in the Cikandang river has also fluctuated, especially flood discharges and flood control structures. The purpose of this study was to obtain the magnitude of the river plan flood discharge Cikandang, Garut Regency. To provide information related to flood discharge calculations using the Rating Curve by comparing their values with manual calculations, the results can be used as a reference for flood mitigation. Analysis, Q2th, Q5th, Q10th, Q20th, Q25th, Q50th, Q100th, were calculated using the Nakayasu Synthetic Unit Hydrograph, Snyder Synthetic and Flow Curve Hydrographs for Rating Rainfall Analysis. The value of the Rating Curve obtained the highest discharge of 23.2 /sec. The value of the Nakayasu Q2th HSS calculation is 540,104 /sec, Q5th is 873,136 /sec, Q10th is 1019,222 /sec, Q20th is 1138,736 /sec, Q25th is 1161,311 /sec, Q50th is 1274,849 /sec, Q100th is 1367,803 /sec. The value of HSS Snyder Q2th calculation is 206,681 /sec, Q5th is 303,371 /sec, Q10th is 354,025 /sec, Q20th is 395,465 /sec, Q25th is 403,293 /sec, Q50th is 442,661 /sec, Q100th is 474,893 /sec.The data used in this study are secondary data from agency agencies. Coordination of Survey and Ciberang River Basin & Measurement data field. Keywords: Flood discharge analysis, Cikandang River, HSS Nakayasu, HSS Snyder, Rating Curve. Sungai Cikandang sebagai lokasi studi, merupakan salah satu sungai yang terletak di Desa Jati Wangi, Kecamatan Pakenjeng, Kabupaten Garut, Jawa Barat. keberadaan debit air disana sangat menentukan kebermanfaatannya untuk kehidupan masyarakat sekitar. Dengan adanya penggunaan tata lahan yang sangat besar, jumlah debit air pada sungai Cikandang juga mengalami fluktuatif khususnya debit banjir dan bangunan pengendali banjir. Tujuan dari penelitian ini untuk memperoleh besaran debit banjir rencana Sungai Cikandang, Kabupaten Garut. Untuk memberikan informasi terkait perhitungan debit banjir dengan menggunakan Rating Curve dengan membandingkan nilainya dengan perhitungan manual,hasilnya dapat digunakan sebagai acuan untuk mitigasi banjir. Analisa,Q2th, Q5th, Q10th, Q20th,Q25th, Q50th,Q100th, dihitung menggunakan metode Hidrograf Satuan Sintetis Nakayasu, Hidrograf Satuan Sintetis Snyder dan Lengkung Aliran (Rating Curve) terhadap analisis curah hujan rencana. Nilai dari Rating Curve didapatkan debit tertinggi sebesar 360,612 /detik. Nilai dari perhitungan HSS Nakayasu Q2th sebesar 540,104 /detik. Q5th sebesar 873,136 /detik, Q10th sebesar 1019,222 /detik. Q20th sebesar 1138,736 /detik, Q25th sebesar 1161,311 /detik, Q50th sebesar 1274,849 /detik, Q100th sebesar 1367,803 /detik. Nilai dari perhitungan HSS Snyder Q2th sebesar 206,681 /detik, Q5th sebesar 303,371 /detik, Q10th sebesar 354,025 /detik, Q20th sebesar 395,465 /detik, Q25th sebesar 403,293 /detik, Q50th sebesar 442,661 /detik, Q100th sebesar 474,893 /detik. Data yang digunakan dalam penelitian ini adalah data sekunder dari instansi Badan Koordinasi Survey dan Balai Besar Wilayah Sungai Ciberang & data pengukuran lapangan. Kata kunci: Analisa debit banjir, Sungai Cikandang,HSS Nakayasu, HSS Snyder, Rating Curve.

Item Type: Thesis (S1)
Call Number CD: FT/SIP. 20 016
Call Number: ST/11/21/144
NIM/NIDN Creators: 41115120211
Uncontrolled Keywords: Analisa debit banjir, Sungai Cikandang,HSS Nakayasu, HSS Snyder, Rating Curve.
Subjects: 100 Philosophy and Psychology/Filsafat dan Psikologi > 150 Psychology/Psikologi > 154 Subconscious and Altered States and Process/Psikologi Bawah Sadar > 154.6 Sleep Phenomena/Fenomena Tidur > 154.63 Dreams/Mimpi > 154.634 Analysis/Analisis
300 Social Science/Ilmu-ilmu Sosial > 380 Commerce, Communications, Transportation (Perdagangan, Komunikasi, Transportasi) > 386 Inland Waterway/Transportasi Pengangkutan di Daerah Pedalaman > 386.3 River Transportation/Transportasi Sungai
600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 624 Civil Engineering/Teknik Sipil
Divisions: Fakultas Teknik > Teknik Sipil
Depositing User: Rifky
Date Deposited: 08 May 2022 02:07
Last Modified: 09 Dec 2022 06:50
URI: http://repository.mercubuana.ac.id/id/eprint/52627

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