Article Per Year (5 Year)
p-Index From 2019 - 2024
0.562
P-Index
This Author published in this journals
All Journal U Karst Jurnal Teknologi dan Rekayasa Sumber Daya Air
Bambang Winarta
Department Of Irrigation Engineering, Faculty Of Engineering, Brawijaya University
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Flood Modeling of Jatiroto River Using HEC-RAS to Determine Effective Flood Control Alternatives Sumiadi Sumiadi; Bambang Winarta; Dwi Priyantoro; Mohammad Taufiq; Rovita Yuniarti Arimbi
U Karst Vol 6, No 2 (2022): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v6i2.3534

Abstract

Jatiroto River, located on the border of Lumajang and Jember Regencies, is one of the rivers with a risk of flooding. This is due to changes in land use and high sedimentation. For this reason, flood control efforts are needed to reduce disaster risk. This study aims to conduct flood modeling on the Jatiroto River and propose the most effective flood control. In this paper, the flood modeling uses HEC-RAS 5.0 with Q25y and Q50y obtained from analyzing rainfall data from 9 rainfall stations. The first modeling was carried out to produce a flow hydrograph on the upstream river section. The second modeling is carried out for the downstream river section with lateral flow from the Jatiroto tributaries. The flood modeling results show that the existing cross-sectional capacity of the Jatiroto River cannot accommodate Q25y, so it overflows in several cross-sections, especially the downstream section.By normalizing the river's cross-section and constructing an embankment in the downstream area, the flow simulation results on flood modeling show that the flood discharge at 25 years and 50 years does not overflow in all cross sections. Therefore, the normalization and construction of embankments become the effective flood control option in the Jatiroto River.
Flood Modeling of Jatiroto River Using HEC-RAS to Determine Effective Flood Control Alternatives Sumiadi Sumiadi; Bambang Winarta; Dwi Priyantoro; Mohammad Taufiq; Rovita Yuniarti Arimbi
U Karst Vol. 6 No. 2 (2022): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v6i2.3534

Abstract

Jatiroto River, located on the border of Lumajang and Jember Regencies, is one of the rivers with a risk of flooding. This is due to changes in land use and high sedimentation. For this reason, flood control efforts are needed to reduce disaster risk. This study aims to conduct flood modeling on the Jatiroto River and propose the most effective flood control. In this paper, the flood modeling uses HEC-RAS 5.0 with Q25y and Q50y obtained from analyzing rainfall data from 9 rainfall stations. The first modeling was carried out to produce a flow hydrograph on the upstream river section. The second modeling is carried out for the downstream river section with lateral flow from the Jatiroto tributaries. The flood modeling results show that the existing cross-sectional capacity of the Jatiroto River cannot accommodate Q25y, so it overflows in several cross-sections, especially the downstream section.By normalizing the river's cross-section and constructing an embankment in the downstream area, the flow simulation results on flood modeling show that the flood discharge at 25 years and 50 years does not overflow in all cross sections. Therefore, the normalization and construction of embankments become the effective flood control option in the Jatiroto River.
Pemodelan Aliran Sungai Jatiroto Menggunakan Software HEC-RAS 5.0.7 Rovita Yuniarti Arimbi; Sumiadi Sumiadi; Bambang Winarta
Jurnal Teknologi dan Rekayasa Sumber Daya Air Vol. 2 No. 2 (2022): Jurnal Teknologi dan Rekayasa Sumber Daya Air (JTRESDA)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtresda.2022.002.02.23

Abstract

The Jatiroto River area, which is located on the border of Lumajang Regency and Jember Regency, is often hit by floods when the rainy season arrives. In 2022, floods hit the lower reaches of the Jatiroto River with an average water level of 30-50 cm. The influence of backwater from the Bondoyudo River downstream and discharge shipments from tributaries makes the cross-sectional capacity of the Jatiroto River unable to accommodate the incoming water discharge. The purpose of this flow modeling is to determine the point of the river section that occurs runoff so that it can be used as a recommendation for flood disaster prevention and mitigation plans.  Calibration of flow modeling to determine n Manning using observational discharge in the weir and historical data of flooding on December 23, 2018. The results of the flow simulation using HEC-RAS 5.0.7 obtained n Manning values of 0.025 and 0.023. The planned flood discharge used for modeling analysis of existing conditions is Q2th of 373.10 m3/sec. From the results of the simulation of the flow of existing conditions in Q2th that in some river sections there was an overflow of water, especially the downstream section.Wilayah Sungai Jatiroto yang terletak di perbatasan Kabupaten Lumajang dan Kabupaten Jember sering diterjang banjir ketika musim penghujan tiba. Tahun 2022 kejadian banjir menerjang wilayah bagian hilir Sungai Jatiroto dengan ketinggian air rata-rata 30-50 cm. Adanya pengaruh backwater dari Sungai Bondoyudo di bagian hilir dan kiriman debit dari anak sungai membuat kapasitas penampang Sungai Jatiroto tidak dapat menampung debit air yang masuk. Tujuan dari pemodelan aliran ini untuk mengetahui titik ruas sungai yang terjadi limpasan sehingga dapat dijadikan rekomendasi rencana pencegahan dan mitigasi bencana banjir. Kalibrasi pemodelan aliran untuk menentukan n Manning menggunakan debit pengamatan di bendung dan data historis banjir pada tanggal 23 Desember 2018. Hasil dari simulasi aliran menggunakan HEC-RAS 5.0.7 didapatkan nilai n Manning sebesar 0,025 dan 0,023. Debit banjir rencana yang digunakan untuk analisis pemodelan kondisi eksisting yaitu Q2th sebesar  373,10 m3/det. Dari hasil simulasi aliran kondisi eksisting Q2th bahwasanya di beberapa ruas sungai terjadi luapan air terutama ruas bagian hilir.
Co-Authors Dwi Priyantoro Dwi Priyantoro Mohammad Taufiq Mohammad Taufiq Rovita Yuniarti Arimbi Rovita Yuniarti Arimbi Rovita Yuniarti Arimbi Sumiadi Sumiadi Sumiadi Sumiadi Sumiadi, Sumiadi