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All Journal Matriks Teknik Sipil International Journal of Sustainable Building, Infrastructure and Environment
Udin, Ikhwan
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Engineering Materials Science & Nanotechnology

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ANALYSIS OF FLOOD DISCHARGE OF THE BLORONG RIVER, KENDAL DISTRICT Apriarso, Dally; Kusuma, Ilham; udin, Ikhwan; Yudaningrum, Farida
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 6, No 1 (2025)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v6i1.21093

Abstract

Abstrack. The Blorong River is a river in the Brangsong District, Kendal Regency, Central Java Province, which has the potential to be hit by flood disasters almost every year. So conditions like this can cause losses to communities around the Blorong River. Through the research carried out, the aim was to determine the maximum discharge of the Blorong river with a river length of ± 3.3 km. The calculations and analysis applied in this research use quantitative methods. The primary data taken is documentation of the existing conditions of the Blorong river, while the secondary data is rainfall data from Balai Pusdataru Bodri Kuto. Analysis of the planned flood discharge using the Nakayasu HSS method shows that the planned return period flood discharge is Q2 years = 236,500 m³/s, Q5 years = 276,392 m³/s, Q10 years = 296,294 m³/s and Q25 years = 300,180 m³/s. After comparing it with the results of manual calculations of the existing conditions of the Blorong River using the Manning formula. The solution to the problem of flooding from the Blorong river is to normalize the river, raise the embankment in the STA section which is no longer able to accommodate the planned flood discharge, and also provide regulations so that people do not throw rubbish in the river.Keywords: Flood Analysis, Flood Discharge, Blorong River
ANALYSIS OF FLOOD DISCHARGE OF THE BLORONG RIVER, KENDAL DISTRICT Apriarso, Dally; Kusuma, Ilham; udin, Ikhwan; Yudaningrum, Farida
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 6, No 1 (2025)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v6i1.21093

Abstract

Abstrack. The Blorong River is a river in the Brangsong District, Kendal Regency, Central Java Province, which has the potential to be hit by flood disasters almost every year. So conditions like this can cause losses to communities around the Blorong River. Through the research carried out, the aim was to determine the maximum discharge of the Blorong river with a river length of ± 3.3 km. The calculations and analysis applied in this research use quantitative methods. The primary data taken is documentation of the existing conditions of the Blorong river, while the secondary data is rainfall data from Balai Pusdataru Bodri Kuto. Analysis of the planned flood discharge using the Nakayasu HSS method shows that the planned return period flood discharge is Q2 years = 236,500 m³/s, Q5 years = 276,392 m³/s, Q10 years = 296,294 m³/s and Q25 years = 300,180 m³/s. After comparing it with the results of manual calculations of the existing conditions of the Blorong River using the Manning formula. The solution to the problem of flooding from the Blorong river is to normalize the river, raise the embankment in the STA section which is no longer able to accommodate the planned flood discharge, and also provide regulations so that people do not throw rubbish in the river.Keywords: Flood Analysis, Flood Discharge, Blorong River
PENANGGULANGAN BANJIR DI Jl. BRIGJEN S. SUDIARTO, KOTA SEMARANG Sta 0.00-8.00 Udin, Ikhwan; Yudaningrum, F.; Rossid, A.
Matriks Teknik Sipil Vol 10, No 2 (2022): Juni
Publisher : Program Studi Teknik Sipil FT UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mateksi.v10i2.61219

Abstract

Banjir di Kota Semarang sering terjadi di karenakan curah hujan tinggi maka masyarakat pesisir harus waspada karena selain banjir yang di sebabkan intensitas hujan tinggi karena terjadi air pasang sehingga ada dua penyenyebab banjir yang terjadi di semarang, untuk banjir yang terjadi di Jl. Brigjen S. Sudiarto, Kota Semarang di sebabkan karena curah hujan tinggi  untuk saluran Primer yang terletak di Jl Brigjen S Sudiarto alirannya mengalir menuju Sungai Banjir Kanal Timur. Genangan cukup parah terjadi di wilayah Semarang Timur, di Jl. Brigjen S. Sudiarto. Dalam perhitungan debit banjir rencana (R24) menggunakan data seperti curah hujan, data pengukuran saluran, dan kondisi saluran tersebut. Berdasarkan dari data tersebut peneliti akan menghitung hujan rencana kala ulang Q 2,5,10,25,50, dan 100 tahun. Untuk menghitung data tersebut kami mengunakan Distribusi Normal, Distribusi Log Normal, Distribusi Log Pearson III, dan Distribusi Gumbel. Kemudian dari perhitungan tersebut dipilih analisa dari metode Distribusi Log III karena lebih mendekati. Berdasarkan pengolahan data dengan menggunakan metode Nakayashu maka diperoleh nilai debit banjir puncak (QP) sebesar 2.74 km² dan Q 2tahun sebesar 2.84 m³/det, Q 5tahun sebesar 3.01 m³/det, Q 10tahun 9.79 m³/det, Q 25tahun sebesar 11.05 m³/det, Q 50tahun sebesar 19.69 m³/det, dan Q 100tahun aebesar 20.35 m³/det. Kemudian dari data debit banjir kala ulang Q50 tahun disimulasikan pada program aplikasi Hydrologi Engineering Center River Analysis System (Hec-Ras).
Co-Authors Apriarso, Dally Kusuma, Ilham Rossid, A. Yudaningrum, F. Yudaningrum, Farida