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All Journal Jurnal Teknik Pengairan: Journal of Water Resources Engineering INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY
Eric Virgiawan Aryadi
Program Magister dan Doktor Teknik Pengairan Fakultas Teknik, Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Energy Engineering Environmental Science

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Analisa Keruntuhan Bendungan Gondang Dengan Menggunakan Program Zhong Xing HY21 Aryadi, Eric Virgiawan; Juwono, Pitojo Tri; Priyantoro, Dwi; Asmaranto, Runi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 5, No 1 (2014)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2014.438 KB)

Abstract

Dam failure occured due to overtopping and piping. This can lead to rapid propagatioin of water flow so inundated the downstream of the dam. The purpose of this study was to analyze the various scenarios for the dam break. Dam Break Analysis conducted with Zhong Xing HY21 software. This study conducted the dam break analysis with overtopping and piping scenarios by insterting certain fracture parameters in order to obtain the outflow hydrograph.Gondang Dam Break greatest impact if experienced overtopping with Q Inflow 968,548 m /sec and produce Q Outflow 7671,57 m /sec. Result flood routing water level of the reservoir was located at an elevation of +40,593 (Gondang Dam Crest Elevation +42,00), so assumed the dam crest elevation of + 40,00. This flood could be trace Gondang River and flooded rice field and also the settlement area around ±73 km 2 . 3Keyword: Dam, Overtopping, Piping, Dam Break Analysis, ZhongXing HY21
ASSESSING THE SUITABILITY OF NATURE-BASED SOLUTIONS (NBS) FOR FLOOD RISK REDUCTION: A CASE STUDY OF THE SERAYU WATERSHED IN PURBALINGGA REGENCY, CENTRAL JAVA Pakungwati, Dinda Ayu; Sejati, Wahyu; Andayani, Sih; Kurniyaningrum, Endah; Aryadi, Eric Virgiawan; Zulfan, James; Beselly, Sebrian Mirdeklis; Ngom, M. B
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 8, NUMBER 2, OCTOBER 2025
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v8i2.23649

Abstract

The Serayu Watershed is one of the critical watersheds in Central Java, particularly in the upstream. Aim: This study aims to assess the suitability of nature-based solutions (NBS) in flood risk reduction in the Serayu Watershed. Methodology and results: The collected data included the Serayu Watershed boundary and spatial datasets, consisting of a Digital Elevation Model (DEM), infiltration area map, soil erosion map, land use map, and slope map. The authors applied a spatial analysis method using the Geographic Information System (GIS) to integrate historical flood data, population density, topography, slope, geology, soil type, land use, water catchment area, water absorption area, groundwater basin, and erosion rate. The study found that within 10 years (2014-2023), 54 villages were exposed to flooding with a total area of ​​6,453.3043 ha or 8.010% of the area of ​​Purbalingga Regency. The analysis of land use changes from 2017 to 2022 shows a significant decrease in the area of ​​plantation forests-by 225,477.67 ha, from 323,979.26 ha to 98,501.58 ha. Conclusion, significance, and impact study: This study examines the regional characteristics and flood patterns of the Upper Serayu River in Central Java, Indonesia. Drawing on spatial analysis and hydrological data, the findings identified five NBS recommended for implementation: river floodplain restoration river and stream renaturation, building-related interventions, bioretention areas, and urban farming. These strategies align with local geormorphological conditions and offer sustainable approaches to flood mitigation. This study contributes to regional policy-making and supports the development of flood risk management in the Upper Serayu Watershed.
Co-Authors Beselly Putra, Sebrian Mirdeklis Dwi Priyantoro Endah Kurniyaningrum Ngom, M. B Pakungwati, Dinda Ayu Pitojo Tri Juwono Runi Asmaranto Sih Andayani, Sih Wahyu Sejati Zulfan, James