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All Journal Civil Engineering Forum Teknik Sipil Inersia : Jurnal Teknik Sipil dan Arsitektur Jurnal Ilmiah Desain & Konstruksi Jurnal Teknik Pengairan: Journal of Water Resources Engineering agriTECH Semesta Teknika Teknisia Jurnal Teknik Sipil Info-Teknik Journal of the Civil Engineering Forum Simposium II UNIID 2017 Inersia : Jurnal Teknik Sipil Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Spektrum Sipil Lowland Technology International Journal of the Civil Engineering Forum Jurnal Teknik Sumber Daya Air Prosiding Seminar Nasional Teknik Sipil UMS Teknologi Sipil : Jurnal Ilmu Pengetahuan dan Teknologi Jurnal Geografi LIngkungan Tropik (Journal of Geography of Tropical Environments)
Rachmad Jayadi
Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Engineering Environmental Science Transportation

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Journal : Journal of the Civil Engineering Forum

 1 
Optimizing the Use of Meninting Multipurpose Reservoir Water in West Lombok District Fransisca Natania Karina Rediasti; Rachmad Jayadi; Bambang Triatmodjo
Journal of the Civil Engineering Forum Vol. 9 No. 2 (May 2023)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.7161

Abstract

The construction of the Meninting Reservoir was planned with the objective of meeting the irrigation and domestic water demands on Lombok Island. It served as a multipurpose reservoir, with a maximum storage volume of 12.18 million m³, mainly for supplying irrigation and domestic water. The reservoir had considerable potential for water availability, which could be used to supply water to the South Lombok region with limited water availability but had agricultural land potential. Therefore, this study aimed to evaluate the potential of Meninting Reservoir water availability and its optimum utilization for irrigation and domestic purposes. The irrigation water demand for 1,559.29 ha and domestic water demand of 150 ls-1 was fulfilled by Meninting Reservoir. Water availability in this Reservoir was estimated with the F.J. Mock method of rainfall-runoff model using 25 years of daily rainfall data from Gunung Sari and Sesaot rain gauge stations. The calibration process of the rainfall-runoff parameters models employed observed discharge data from the Aiknyet water level gauge station. The formula for optimizing reservoir water release was prepared using the linear programming method based on operational water level limits, inflow discharge, irrigation, and non-irrigation water requirements, including domestic water. The optimal average annual cropping intensity was 203.96%, 215.87%, and 241.41% for dry, normal, and wet years, respectively. The service reliability of irrigation and domestic water demands reached 100% for all inflow discharge conditions. The k-factor value met the minimum limit of 0.70 and 0.85 for irrigation and domestic water demands, respectively.
The Development of Ungauged-Catchment Integrated-Similarity Unit Hydrograph to Estimate Inflow of Wonogiri Reservoir Kurniawan Putra Santoso; Istiarto; Rachmad Jayadi
Journal of the Civil Engineering Forum Vol. 9 No. 3 (September 2023)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.7051

Abstract

The Wonogiri Reservoir is a multipurpose reservoir at the Upper Bengawan Solo Watershed, primarily designed to serve as a flood control system. However, there is no accurate estimation of the inflow into the reservoir due to the limited availability of hydrological stations. Observations showed only four out of ten unit hydrographs of the Wonogiri Reservoir watershed. Therefore, this study was conducted to apply an integrated similarity-based approach for designing unit hydrographs in ungauged catchments. The process involved evaluating the integrated similarity between pairs of gauged-ungauged catchments using hydrologic and physical property parameters. This led to the selection of the donor or gauged catchment with the highest similarity score to develop the unit hydrograph for the ungauged catchments. The developed UHs were further applied to estimate the reservoir inflow for the December 25, 2007, flood event. The results showed that the computed peak discharge was 10.9% lower than a previous study. Subsequently, the HEC-HMS simulation model was used to project the updated design flood hydrographs to the reservoir. The design rainfall was derived from automatic rainfall recorder (ARR) and PERSIANN satellite-based data. The ARR data showed that the extreme rainfall duration was 5 hours while satellite data indicated 6 hours. The application of the ARR 5-hour duration to the updated flood hydrographs led to a peak discharge of 5123 m3 s-1, 7041 m3 s-1, and 10,370 m3 s-1 for the 60-year, 500-year, and PMF floods respectively in line with the flood design criteria of Wonogiri Reservoir. These estimates were observed to be significantly higher than the 1982 design floods which were 4000 m3 s-1, 5100 m3 s-1, and 9600 m3 s-1 respectively. This updated flood control design was important to renew the operation rule of the Wonogiri reservoir during flood periods.
Co-Authors Adam Pamudji Rahardjo Adam Pamudji Rahardjo Aderita Mariana Takeleb Ahmad Rifa’i Ahmad Rifa’I Ali Trusharyanto Aminullah, Akhmad Anantri Sulistyowati Anggi Nidya Sari Bambang A. Kironoto Bambang Agus Kironoto Bambang Kuncoro Hari Bambang Triatmodjo Bambang Trihatmodjo, Bambang Benjamin J.B. Nanlohy C. Lestari Saptarini N. Darajat, Achmad Rafi’ud Darmanto Darmanto Dinia Anggraheni Djoko Legono Endita Prima Ari Pratiwi Endita Prima Ari Pratiwi Fatchan Nurrochmad Fransisca Natania Karina Rediasti Goyu Ismoyojati Henggar Risa Destania Heriantono Waluyadi Hesti Subiyanti Hesti Subiyanti, Hesti INTAN SUPRABA Ismoyojati, Goyu Istiarto Istiarto Istiarto Istiarto Istiarto Istiarto Istiarto Joko Sujono Joko Sujono Joko Sujono Joko Sujono Joko Sujono Joko Sujono Kabul Basah Suryolelono Kabul Basah Suryolelono Kamil, Insanul Koichiro Ohgushi Kurniawan Putra Santoso Lidwina Putri Astani Lukman Hidayat Lukman Hidayat Murtiningrum Murtiningrum Pamungkas, Yusuf Aji Putu Sudira Putu Sudira Putu Sudira Reinhart Hadthya Roby Hambali Sahid Susanto Santoso, Kurniawan Putra Sardi Sardi Sri Haryanti Sri Haryanti Sudjarwadi Sudjarwadi Triyoso, Christopher Wignyosukarto, Budi Santoso Wisnulingga, Bayu Krisna Yakubson Yohana Lilis Handayani Yotam Adiel Haryanto Yusuf Aji Pamungkas