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All Journal Jurnal Mahasiswa Jurusan Teknik Pengairan Jurnal Teknik Pengairan: Journal of Water Resources Engineering Jurnal Teknik Sipil Civil and Environmental Science Journal (CIVENSE)
Lily Montarcih Limantara
Jurusan Teknik Pengairan Fakultas Teknik Universitas Brawijaya Malang.
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Environmental Science

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Performance of The Dispin Models with Automatic Parameter Calibration on The Transformation of Rainfall to Runoff Data Sulianto, Sulianto; Bisri, M.; Limantara, lily Montarcih; Sisinggih, Dian
Civil and Environmental Science Journal (CIVENSE) Vol 2, No 2 (2019)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2019.00202.2

Abstract

This article presents a new model of the DISPRIN Model combination with two different level optimization methods. The new model of DISPRIN Model combination and Differential Evolution (DE) algorithm is called DISPRIN25-DE Models and its incorporation with Monte Carlo Simulation method called DISPRIN25-MC Models. The case study is Lesti Watershed (319.14 Km2) in East Java. The model test uses a 10-year daily data set, from January 1, 2007 to December 31, 2016. Data series Year 2007 ~ 2013 as a set of training data for calibration and data Year 2014 ~ 2016 as testing data set for model validation. Running program DISPRIN25-DE Models with input parameter value C_min = 0, C_max = 1, H_min = 0, H_max = 600 mm obtained best fitness 0.044 m3/sec, NSE = 0.762 and PME = -0.059. The DISPRIN25-MC Models analysis generates a minimum RMSE of 0.056 m3/sec, NSE = 0.779, PME = -0.70. From the RMSE and NSE indicators it appears that both models can show an equivalent level of performance, but in terms of the PME indicator and iteration time is apparent The DISPRIN25-MC model has worse performance than the two DISPRIN25-DE models.
STUDI KELAYAKAN RENCANA PEMBANGUNAN EMBUNG PENIWEN DESA PENIWEN KECAMATAN KROMENGAN KABUPATEN MALANG Ferina, Marisa Ayu; Limantara, Lily Montarcih; Sholichin, Moh.
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 4, No 1 (2020)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

Abstrak Kabupaten Malang yakni daerah agraris dengan jumlah penduduk 2.544.315 (BPS Kab Malang, 2018), oleh karena itu dibutuhkan ketersediaan air baku untuk irigasi. Pengaruh perubahan iklim, air menjadi berkurang dan banyak mata air yang mati pada musim kemarau, untuk itu pembangunan embung menjadi solusi utama. Studi ini bertujuan untuk mengetahui kelayakan pembangunan Embung Peniwen ditinjau dari aspek teknis dan aspek ekonomi. Dari analisis teknis Embung Peniwen dapat menampung volume air sebesar 52.032,55 m3 dengan areal irigasi 75 Ha. Sedangkan simulasi tampungan, Embung Peniwen dapat memenuhi kebutuhan air irigasi dengan pola tanam Padi-Padi-Palawija Dari hasil perhitungan diperoleh nilai pembangunan sebesar Rp. 6.185.840.000 termasuk Pajak Pertambahan Nilai (PPN). Kondisi normal diperoleh nilai NPV=Rp. 794.466.428, B/C=1,116, EIRR=14,440%. Kondisi manfaat turun 10%, biaya tetap diperoleh NPV=Rp. 31.998.961, B/C=1,005, EIRR=12,102%. Kondisi manfaat dan biaya tetap, pelaksanaan terlambat 1 tahun diperoleh NPV=Rp. 77.759.182, B/C=1,133, EIRR=12,216%. Disimpulkan bahwa pembangunan Embung Peniwen layak secara teknis dan ekonomi untuk dibangun. Abstract Malang Regency is an agricultural area with a population of 2,544,315 (BPS Kab Malang, 2018), therefore it requires the availability of raw water for irrigation. The effect of climate change is that water is reduced and many springs die in the dry season, so the construction of embung is the main solution. This study aims to determine the feasibility of developing the Peniwen Embung in terms of technical and economic aspects. From the technical analysis, the Peniwen Embung can accommodate a volume of water of 52,032.55 m3 with an irrigation area of 75 hectares. While the storage simulation, Peniwen Embung can meet the needs of irrigation water with the cropping pattern of Rice-Padi-Palawija. From the calculation results, the development value is Rp. 6,185,840,000 including Value Added Tax (VAT). Under normal conditions, the NPV value = Rp. 794,466,428, B / C = 1,116, EIRR = 14,440%. Benefit condition decreased by 10%, fixed cost obtained NPV = Rp. 31,998,961, B / C = 1,005, EIRR = 12.102%. Conditions for benefits and fixed costs, one year late implementation, the NPV = Rp. 77,759,182, B / C = 1,133, EIRR = 12,216%. It was concluded that the construction of the Peniwen Embung was technically and economically feasible to build.
Analisa Keandalan Tampungan Waduk di Embung Tambak Pocok Bangkalan Lily Montarcih Limantara; Whima Regianto Putra
Jurnal Teknik Sipil Vol 23 No 2 (2016)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2016.23.2.5

Abstract

Abstrak. Kebutuhan air domestik dihitung berdasarkan jumlah penduduk dan standar kebutuhan air di wilayah administratif yang akan dilayani. Untuk mengestimasi ketersediaan air dalam studi ini digunakan analisa debit Model NRECA dan F.J Mock. Untuk keperluan analisa keandalan tampungam, berdasarkan data debit hasil simulasi F.J Mock dan NRECA selama 20 tahun, dilakukan perpanjangan data debit dengan menggunakan metode Thomas-Fiering. Hasil simulasi keandalan embung dengan melakukan proses simulasi tiap data debit hasil bangkitan sepanjang 20 tahun dengan masa proyeksi selama 20 tahun dengan asumsi tidak ada perubahan parameter DAS, terdapat indikasi bahwa data debit untuk NRECA mengalami kegagalan pada debit tahun 2004, terjadi peluang keandalan 100% pada tahun 2007, dan 25% pada tahun 2026. Sedangkan untuk data debit hasil dari F.J Mock, peluang keandalan 100% terjadi pada tahun 2007 sampai dengan tahun 2026 untuk semua simulasi data debit. Dikarenakan tidak adanya data debit di lapangan, maka pemilihan data debit dilakukan dengan mengambil Qmin untuk masingmasing data debit. Dari 2 metode tsb didapatkan untuk Qmin hasil dari F.J Mock embung memiliki tingkat keandalan 100% pada tahun 2007 sampai dengan 2026, sedangkan untuk Qmin NRECA embung hanya mampu melayani seluruh penduduk (100%) pada tahun 2007, sedangkan untuk tahun-tahun berikutnya mengalami penurunan hingga 25% pada tahun 2026.Abstract. Domestic water demand is analyzed based on the number of population and the standard of water demand in served administrative region. To estimate the water supply, this study used the models of NRECA and F.J. Mock. For analyzing reservoir reliability based on the simulation discharge result of F.J. Mock and NRECA during 20 years there was needed discharge data generated by using Thomas Fiering method. Simulation result of small-dam reliability by carrying out the simulation process every discharge data of generated result along 20 years with the projection during 20 years indicated that discharge result of NRECA was failure in 2004 and it assumes that there is no parameter change in catchment, it had the possibility of reliability on 100% in 2007 and 25% in 2026.  however, discharge result of F.J. Mock had the possibility of reliability on 100% and it was happened in 2007, and 25% in 2026 for the whole simulation of discharge. There was no discharge data in study location, so minimum discharge was the optional one. Based on the two methods, the Qmin of F.J. Mock has the reliability level of 100% in 2007 until 2026. However Qmin of NRECA has only the ability to serve the whole population (100%) in 2007 but for the next years there was decreasing until 25% in 2026.
Co-Authors A.A. Ketut Agung Cahyawan W Achmad Hariyadi Adiputra, Dhimas Satibi Agung Rahmadi Agus Priombodo Alamsyah, Muhammad Bayu Ambarwati, Arum Nurwidya Aniek Masrevaniah Arfiyanti, Anandini Fatma Arif Rahmad Darmawan Azwar Annas Kunaifi Chandrasasi, Dian Dian Chandrasasi Dian Sisinggih Djunaedi Djunaedi Donny Harisuseno Dwi Priyantoro Edison Hukom Eka Agus Subiyantoro Endang Purwati RN Ery Suhartanto Fauziyah, Fauziyah Ferina, Marisa Ayu Haris Djafar, Haris Harisuseno, Donny Ikrar Hanggara, Ikrar Ilham, Rendy Khoirul Indra Kusuma Sari Islamiyanto, Yudho Putra Juni, Riska Wulan Lalu Sigar Canggih Ranesa, Lalu Sigar Canggih Lenny Febriana Ideawati, Lenny Febriana Lucky Dyah Ekorini M. Bisri Mahendra, Hardiman Mochammad Ibrahim Moh. Sholichin Mohammad Bisri Mohammad Sholichin Muhamad Rodhita Muhammad Ilham nalurita, sari Nuf'a, Hilma Nurdiyanto Nurdiyanto, Nurdiyanto nurfitriani, Alvina nurfitriani, Alvina Pitojo Tri Juwono Putra, Whima Regianto Qomarul Huda, Qomarul Rachma, Siti Talitha Rahmah Dara Lufira ramdhani, fitroh Rini Wahyu Sayekti Rini, Firda Agustiya Riwin Andono Rossy Tamaya, Hana Arum Runi Asmaranto Semuel J. Ch. Ahab, Semuel J. Ch. Sri Wahyuni Suhardjono Suhardjono Sulianto Sulianto Suwanto Marsudi Tri Budi Prayogo, Tri Budi Tyas Daru, Tyas Ussy Andawayanti Very Dermawan Wahyuni, Sri Wahyuni, Sri Whima Regianto Putra Widandi Soetopo