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All Journal JURNAL TEKNIK SIPIL UNAYA Journal of Planning and Research in Civil Engineering
Muhammad Zardi
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Civil Engineering, Building, Construction & Architecture Engineering Materials Science & Nanotechnology

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Analisis Kapasitas Tampang Sungai Jambo Balee Terhadap Banjir Periode Ulang Bayu Surahman Prasetyo Manik; Ichsan Syahputra; Muhammad Zardi
Jurnal Teknik Sipil Unaya Vol 9, No 2 (2023): Juli 2023
Publisher : Center for Research and Community Service (LPPM) University of Abulyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30601/jtsu.v9i2.4264

Abstract

Indra Makmur Sub-District floods frequently occur every year, the flood originates from the overflow of the Jambo Balee river in the area. The watershed (DAS) in the area flows through residential areas in Jambo Balee Village, Indra Makmur sub-district, East Aceh district. The research objective was to determine the flood discharge, flood water level, and capacity of the Jambo Balee River. So the research carried out was to analyze hydrology and hydraulics regarding the study of the planned flood discharge in the Jambo Balee watershed area. The analysis was carried out by looking for the design rainfall using the Pearson III Log distribution that meets the criteria in the calculation of statistical parameters. The rain data used comes from malikussaleh station. The rainfall data used is maximum daily rainfall data from 2012 to 2021. Flood discharge analysis uses the HSS Nakayasu and HSS Gama I methods. In the hydraulics analysis the method used is HSS Nakayasu. The HSS Nakayasu flood discharge data is used as input in the cross-sectional profile modeling in the HEC-RAS software. The results of the flood discharge analysis using the HSS Nakayasu method for return periods of 2, 5, 10, 25, 50, 100 years, respectively are 79,129 m3/s, 108,045 m3/s, 125,340 m3/s, 145,290 m3/s, 158,916 m3/s sec, and 171,567 m3/s. From the results of the hydraulic analysis, the simulation results show that with a return period of 10, 25, 50, and 100 years, the river surface overflows. At STA 0+250 HU it can be seen that the flood water level for the 10 year return period is at a height of 3 m and for the 25 year return period is at a height of 3.5 m. Therefore, the Jambo Balee River cannot accommodate the flood discharge that occurs.
Analisis Debit Banjir Metode Hidrograf Satuan Sintetis (HSS) Nakayasu dan Synder pada Krueng Sabee Aceh Jaya Muhammad Ridha; Amalia; Muhammad Zardi; Tety Sriana; Mery Silviana; Meliyana; Susi Sakia
Jurnal Perencanaan dan Penelitian Teknik Sipil Vol 4 No 2 (2025): Juli
Publisher : Universitas Iskandar Muda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55616/prince.v4i2.1000

Abstract

Krueng Sabee is one of the rivers located in Krueng Sabee District, Aceh Jaya Regency. Krueng Sabee has a main river with a length of 33.27 km and a watershed area of 380.90 km2 and an average river elevation of 0.4%. Krueng Rusi and Krueng Cangeh divide the Krueng Sabee River flow in the upstream. Krueng Sabee often overflows which causes flooding around its flow area. To determine the design flood discharge for the Return Period (PU) of 2.5, 10, 25, 50 and 100 years that occurred in Krueng Sabe using the HSS Nakayasu and HSS Synder Methods is the main objective of this study. Rainfall data used from station A in Pulo Raya Village and station B in Pante Kuyun Village. The flood discharge for Return Period (PU) 2, 5, 10, 25, 50, and 100 is 1716.66 m³/sec, 1985.10 m³/sec, 2162.83 m³/sec, 2387.39 m³/sec, 2553.99 m³/sec and 2719.36 m³/sec is the result of the Nakayasu HSS Method analysis. The Snyder HSS method, obtains the design flood discharge values for various Return Periods (PU) as follows: 2 years 14,479.83 m³/s, 5 years 16,746.64 m³/s, 10 years 18,247.47 m³/s, 25 years 20,143.77 m³/s, 50 years, 21,550.55 m³/s Return Period 100 years 22,946.95 m³/s. It was found that the Snyder Synthetic Unit Hydrograph (HSS) method produces a larger flood discharge compared to the Nakayasu HSS.
Co-Authors Amalia Bayu Surahman Prasetyo Manik Ichsan Syahputra Meliyana Mery Silviana Muhammad Ridha Susi Sakia Tety Sriana