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All Journal Media Teknik Sipil Indonesian Journal of Geography Jurnal Mahasiswa Jurusan Teknik Pengairan Jurnal Teknik Pengairan: Journal of Water Resources Engineering Jurnal Penelitian Pendidikan IPA (JPPIPA) Civil Engineering Journal Civil and Environmental Science Journal (CIVENSE) Agro Bali: Agricultural Journal Jurnal Teknologi dan Rekayasa Sumber Daya Air
Widandi Soetopo
Jurusan Teknik Pengairan Fakultas Teknik Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Engineering Environmental Science Materials Science & Nanotechnology Physics

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Perbandingan Metode FJ. Mock dan NRECA untuk Transformasi Hujan Menjadi Debit pada DAS Metro Kabupaten Malang, Jawa Timur widyaningsih, karunia waasiu; Harisuseno, Donny; Soetopo, Widandi
Jurnal Teknologi dan Rekayasa Sumber Daya Air Vol. 1 No. 1 (2021): 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.2021.001.01.05

Abstract

A process of converting rain data to runoff or discharge flow is called the rain transformation process. The transformation of rain into discharge is affected by the physical characteristics of the watershed and its land used. Discharge data in a watershed functions is as a measure of the amount of discharge available in a river which is useful in improving the management of water resources. This study purpose is to determine the results of the calculation of rain to discharge which located in the Metro DAS, Malang Regency. The methods analyzed by researchers is the FJ. Mock and NRECA methods. The results of the calculation from these methods are then compared with the rain data, because the AWLR discharge in the Sub Metro Watershed is considered not suitable to be the discharge of observations in this study. Based on the analysis results, the most suitable method for calculating the rainfall discharge in the Sub Metro Watershed is NRECA method with a determination coefficient (R2) = 0.792, and a correlation coefficient (r) = 0.887.  
Studi Perencanaan Pola Operasi Waduk Kuningan Untuk Memenuhi Kebutuhan Air Baku, Irigasi, dan PLTA di Kabupaten Kuningan Jawa Barat Rachmawati, Ratu Anita; Soetopo, Widandi; Juwono, Pitojo Tri
Jurnal Teknologi dan Rekayasa Sumber Daya Air Vol. 1 No. 1 (2021): 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.2021.001.01.18

Abstract

Perkembangan Kabupaten Kuningan dari tahun ke tahun semakin pesat sehingga menyebababkan turut pesatnya kebutuhan air penduduknya. Pembangunan Waduk Kunigan diharapkan bisa mencukupi kebutuhan air penduduk Kabupaten Kuningan. Pada penelitian ini melihat besarnya kebutuhan air  maka perlu adanya optimasi guna memenuhi kebutuhan air yang diperlukan dan metode optimasi yang dipilih adalah Algoritma Genetik. Mode ini dijalankan dengan spreadsheet Excel dari Microsoft Office versi 2007. Menurut hasil analisis, Pusat tahapan optimasi dengan Algoritma genetik  pada struktur daripada kromosom.  Kromosom dalam hal ini adalah aturan lepasan waduk yang mewakili alternatif solusi, jadi kromosom ini bisa dikatakan interfal lepasan waduk yang bermacam macam variasinya & mempunyai nilai kinerja Menurut fungsi tujuan. Setelah dilakukan optimasi, rata-rata kebutuhan air meningkat 63,83%, dan kebutuhan air minimal meningkat 44,57%. Keadaan tampungan waduk minimal 2,55 juta meter kubik, dan kapasitas tampungan air rata-rata 17,01 juta meter kubik. Rata-rata energi yang dihasilkan PLTA meningkat 14,72%, dan energi minimum yang dihasilkan PLTA meningkat 72,53%. Sehingga dapat memaksimalkan kinerja reservoir tanpa mengalami kerusakan. Hal ini diharapkan dapat memberikan acuan untuk pedoman lepasan teroptimal pada pengoperasiannya waduk Kuningan agar keperluan irigasi, air baku, dan PLTA terpenuhi The development of Kuningan Regency from year to year is increasing rapidly, causing the rapid need for water for its population. It is hoped that the Kunigan Reservoir construction can meet the water needs of the residents of Kuningan Regency. In this study, seeing the amount of water demand, it is necessary to optimize it to meet the required water needs and the chosen optimization method is the Genetic Algorithm. This mode is run with Excel spreadsheets from Microsoft Office 2007 version. Based of the analysis results, the optimization phase centers with genetic algorithms on the structure rather than chromosomes. The chromosome in this case is the reservoir discharge rule that represents an alternative solution, so this chromosome can be said to be the interface discharge of the reservoir which has various variations and has a performance value based on the objective function. After optimization, the average water demand increased by 63.83%, and the minimum water requirement increased by 44.57%. The condition of the reservoir is at least 2.55 m3, and the average storage capacity is 17.01 m3. The average energy produced by PLTA increased by 14.72%, and the minimum energy produced by PLTA increased by 72.53%. So that it can maximize reservoir performance without experiencing damage. This is expected to provide an overview of the optimal release guidelines for the operation of the Kuningan reservoir to meet the needs for irrigation, raw water and hydropower.
Studi Optimasi Air Irigasi Bendungan Semantok Untuk Memaksimalkan Luas Layanan Irigasi Di Kabupaten Nganjuk Larasati, Putri Dita; Sayekti, Rini Wahyu; Soetopo, Widandi
Jurnal Teknologi dan Rekayasa Sumber Daya Air Vol. 1 No. 1 (2021): 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.2021.001.01.29

Abstract

Nganjuk district is quite dry with low rainfall distribution however people still rely on rainfed irrigation including 6 irrigation areas which are Weir Rejoso, Margomulyo, Ngomben, Jati, Jatirejo, and Janeng. This problem makes the total cropping intensity for three times planting period of every irrigation area didn’t reach 300%. To anticipate this problem, Semantok Dam was built to provide the discharge of irrigation water needs in the amount of 3.23 m3/s for all irrigation areas available in each weir. This study performed optimization with the linear program using solver in Microsoft Excel. The objective function of this model was to optimize the supply provided by the dam and to optimize the potential land area available in the weir irrigation area by the discharge supply and available land area as constraints. In this optimization model, three cropping patterns were planned with a variety of initial planting times for each weir. Based on the optimization result, the selected cropping pattern is the 2nd cropping pattern alternative that starts planting on the 3rd period of December with a total cropping intensity is 300%. Kabupaten nganjuk merupakan daerah kering dengan sistem irigasi teknis namun masih mengandalkan irigasi tadah hujan dimana meliputi 6 daerah irigasi bendung yaitu Bendung Rejoso, Margomulyo, Ngomben, Jati, Jatirejo dan Janeng. Sehingga intensitas tanam total untuk tiga kali masa tanam pada setiap daerah irigasi bendung tidak mencapai 300%. Demi mengantisipasi hal ini maka dibangun Bendungan Semantok guna menyuplai debit kebutuhan irigasi sebesar 3,23 m3/dt untuk keenam daerah irigasi bendung tersebut. Dalam studi ini dilakukan optimasi dengan program linier menggunakan fasilitas solver pada Microsoft Excel. Fungsi tujuan pada model optimasi ini adalah mengoptimalkan debit suplai pada bendungan dan luas potensial yang ada pada 6 daerah irigasi bendung dengan fungsi kendala yaitu debit suplai bendungan dan luas lahan tersedia. Pada model optimasi ini direncanakan tiga alternatif pola tata tanam dengan perbedaan awal tanam untuk masing-masing bendung. Berdasarkan hasil optimasi maka didapat pola tata tanam terpilih adalah alternatif pola tata tanam ke-II dengan awal tanam Bulan Desember periode III dengan intensitas tanam total 300%.
Co-Authors . Asmelita A.A. Ketut Agung Cahyawan W Agung Rahmadi Agustina Pagatiku Almira, Aufa Hanan Alpikarigo, Jano Ambarwati, Arum Nurwidya Amik, Arra Misrokhis Aniek Masrevaniah Aysya, Febrina Lifatul Bambang Pramujo, Bambang Cahaya Santoso Samosir, Cahaya Santoso Dedy Febrianto Nadjamuddin, Dedy Febrianto Dian Chandrasasi Donny Harisuseno donny harisuseno Emma Yuliani Endang Purwati RN Ery Suhartanto Ery Suhartanto Febrina Lifatul Arsy Hari Prasetijo hari siswoyo Harisuseno, Donny Harya Muldianto Indra Farni Jano Alpikarigo Kharistanto, Robertus Tegar Kurnia La Ode Agisaqma Lake, Tania Chrisna Maria Larasati, Putri Dita Lilik Sriwahyuni Lilly Montarcih Limantara, Lilly Montarcih Lily M. Limantara Lily Montarcih Limantara Lily Montarcih Limantara M. Bisri Maskur Efendi, Maskur Moch. Sholichin Moh. Hilmi Moh. Sholichin Moh. Sholichin Muhammad Ilham Nuf'a, Hilma Pitojo Tri Juwono Qomarul Huda, Qomarul Rachmawati, Ratu Anita Rahmah Dara Lufira Rendra Arif Yudiarso Rini Wahyu Sayekti Rispiningtati Rispiningtati Rony Rudson Rosmala Dewi Shafur Bachtiar Suhardjono Suhardjono Sumiadi, Sumiadi Suryoputro, Nugroho Tri Budi Prayogo Triwidianto, Heru Ussy Andawayanti Very Dermawan Very Dermawan Visi Murpratiwi, Aisyah widyaningsih, karunia waasiu Wijayanto, Andy Wintyaswan, Gevan Rangga Wiwin Sri Rahayu Yan P. S. Tampani, Yan P. S. Yenson Priyadi Abel, Yenson Priyadi Yudha Mediawan Yulia Indriani Zulkipli Zulkipli