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All Journal Fondasi: Jurnal Teknik Sipil Civil Engineering For Community Development
Priyambodho, Bambang Adhi
universitas sultan ageng tirtayasa
Civil Engineering, Building, Construction & Architecture Transportation

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Flood Analysis of the Kedung Ingas River and Pabean River the Cilegon City Waita, Stanley Reynaldi Frits Sirway; Priyambodho, Bambang Adhi; Purnaditya, Ngakan Putu; Fathonah, Woelandari; Subekti, Subekti; Nabila, Firyaal
Jurnal Fondasi Vol 14, No 1 (2025)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v14i1.32284

Abstract

The Kedung Ingas River and Pabean River the Cilegon City often flood every year. It has an impact on losses and disruptions to public facilities and settlements such as highways, Cilegon Regional Hospital, Metro housing and residential areas located close to the river. The purpose of this study is to determine the amount of design discharge at 10, 25 and 50 years return period. The methods used to calculate the design flood discharge are Rational, Der Weduwen, and HSS Nakayasu. Based on the results of the study, the design flood discharge of the Kedung Ingas River and the Pabean River with Q10 = 121.25 m3/s, Q25 = 131.01 m3/s, and Q50 = 138.79 m3/s. The design flood discharge value used is the calculation value using the selected method, namely Nakayasu Synthetic Unit Hydrograph.
Analysis of Flood Discharge at Catchment Area of West Jurang Mangu Reservoir using HEC-HMS Purnaditya, Ngakan Putu; Jannah, Dahlia Raudothul; Subekti, Subekti; Priyambodho, Bambang Adhi; Wigati, Restu
Jurnal Fondasi Vol 14, No 1 (2025)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v14i1.32274

Abstract

High rainfall in Indonesia is one of the causes of flooding, especially in vulnerable areas such as watersheds. In addition to high rainfall, an increase in population and land use that is not in accordance with its function can worsen watershed conditions and cause an increase in flood risk. South Tangerang City is one of the areas prone to flooding, so flood control efforts are carried out such as widening rivers, raising embankments, and building retention ponds. Around the catchment area of the West Jurang Mangu Reservoir, flooding with a height of 50 60 cm still occurs, so further research was carried out at that location. In this study, the research method used QGIS to determine the catchment area, followed by hydrological analysis of the planned flood discharge using the HSS Synder method and modeling with HEC-HMS software. The results showed that the planned flood discharge using HSS Synder at return periods of 2, 5, 10, 25, and 50 years was 2.55 m3/s; 3.599 m3/s; 4.261 m3/s; 5.033 m3/s; and 5.718 m3/s.
Co-Authors Abdurohim, Abdurohim Adianti, Feni Asyiah, Siti Baehaki, Baehaki Bethary, Rindu Twidi Budiman, Arief Darwis, Zulmahdi Fathonah, Woelandari Fathonah, Woelandari Intari, Dwi Esti Jannah, Dahlia Raudothul Kusumaningrum, Winda Lutfiah, Qonita Maulana, Yovi Nabila, Firyaal Nabila, Firyaal Ngakan Putu Purnaditya Nyi Raden Ruyani Pinem, Mekro Permana Pradana, Muhammad Fakhruriza Raissa, Azarine Vashti Alpha Restu Wigati, Restu Saharani, Reza Nurul Subekti, Subekti Syahid, Mush'ab Abdu Asy Syahid, Mushab Abdu Asy Ujianto, Rifky Waita, Stanley Reynaldi Frits Sirway Zulfa, Graciela Febriyanti