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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 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 Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science

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Rencana Penjadwalan Pembagian Air Irigasi Daerah Irigasi Paguyaman Kanan Kabupaten Boalemo Provinsi Gorontalo Nadjamuddin, Dedy Febrianto; Soetopo, Widandi; Sholichin, Moh.
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 5, No 2 (2014)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Water availability is a major problem to be considered in determining cropping patterns in irrigated areas. Considering the importance of irrigation activities, there should be plan an optimal utilization of water in order to get maximum benefit from the existing water supply according to their function. Irrigation area of paguyaman is planned with two doors intercepts. Irrigation Area Paguyaman on right side, is planned to irrigate 4,176 ha of land where still have potential in the irrigated area expansion. Potential expansion of irrigated area is 1500 ha. Paguyaman Irrigation Area is still in the implementation stage of physical construction. The approach used as the basis arrangement for the water distribution is the approach in terms of a balance between the availability of water to the water requirements for crops. Allocating and distribution of water required in an integrated calculation attended by using a Linear Program.Key words: Optimization, Irrigation Area, Linear Program, Solver.
Model-Model Pembangkitan Data Sintetis Untuk Curah Hujan Harian Di Wilayah Brantas Tengah Soetopo, Widandi; Limantara, Lily Montarcih; Sayekti, Rini Wahyu; Purwati, Endang; Chandrasasi, Dian; Ilham, Muhammad; Rahmadi, Agung
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 6, No 1 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

This research is for finding the suitable synthetic daily rainfall generating model in the Middle Brantas River Basin - East Java. There are 7 models being considered, 4 single-site models, (1) the two-part, (2) the transition probability matrix, (3) the resampling, and (4) the time series, and 3 multisite models, (5) the conditional, (6) the extension of single site Markov chain, and (7) the random cascade. All time-series produced by the models are then tested statistically. The results show that the differences between the historial time series and the synthetical time series are not too significant. It turn out that the synthetic time series of multisite models are better than the synthetic time series of single-site models.Keywords: generating model, synthetic data, daily rainfall.
OPTIMASI AIR WADUK GONDANG DENGAN METODE DINAMIK DETERMINISTIK Nuf'a, Hilma; Limantara, Lily Montarcih; Soetopo, Widandi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 7, No 1 (2016)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Abstrak: Waduk Gondang mempunyai fungsi utama sebagai penyedia air untuk kebutuhan irigasi selain itu juga untuk pemenuhan kebutuhan air baku yang masyarakatnya sangat bergantung pada keberadaan Waduk Gondang ini terutama pada waktu musim kemarau.  Waduk Gondang mempunyai kapasitas tampungan efektif 23,7 x 106 m3. Tesis ini hanya menganalisi fungsi irigasi saja. Melalui tesis diharapkan dapat memperbaiki pola operasi waduk sehingga dapat meningkatkan intensitas irigasi dan keuntungan irigasi yang optimal. Daerah irigasi Gondang mempunyai 3 (tiga) musim tanam dengan 5 (lima) pola tata tanam antara lain Padi - Padi – Padi & Palawija, Padi – Padi & Palawija – Palawija, Padi – Padi & Palawija – Padi & Palawija, Padi – Padi – Pad i& Palawija + Tambak, Padi – Padi – Padi + Tambak. Luas daerah irigasi yang dilayani 10.651 Ha, dengan intensitas irigasinya 175%, keuntungan irigasi Rp. 539.371.000,00. Studi optimasi pengoperasian Waduk Gondang dengan menggunakan program dinamik deterministik ini berguna untuk merencanakan konsep distribusi potensi air yang dapat diandalkan. Variabel yang digunakan adalah tampungan waduk (m3), debit inflow waduk( m3/dt), debit outflow waduk (m3/dt),  dan keuntungan irigasi (Rp). Hasil analisis menunjukan bahwa optimasi program dinamik menghasilkan intensitas irigasi 228,57%, keuntungan irigasi Rp. 702.830.000,00.Kata Kunci: Optimasi, Pola Tata Tanam, Inflow, Outflow, Keuntungan irigasi, Dinamik Deterministik Abstract: Gondang reservoir has the main function as a provider of water for irrigation needs and also to meet the needs of the community raw water reservoir relies heavily on the presence of this Gondang especially during the dry season. Gondang reservoir has a storage capacity effective 23 x 106 m3. This thesis only analyzed the irrigation function only. Through the thesis is expected to improve the pattern of reservoir operations so as to increase the intensity of irrigation and irrigation optimal advantage. Irrigation area Gondang has three (3) growing season with five (5) the system of planting, among others Rice - Rice - Rice & Crops, Rice - Rice & Crops - Crops, Rice - Rice & Crops - Rice & Crops, Rice - Rice - i & Crops + Pad Pond, Rice - Rice - Rice + Pond. The total area of 10 651 hectares of irrigation are served, with the irrigation intensity of 175%, the advantage of irrigation Rp. 539,371,000.00. Gondang reservoir operation optimization studies using deterministic dynamic program is useful for planning the concept of the potential distribution of reliable water. The variables used are the storage reservoir (m3), discharge reservoir inflow (m3 / s), reservoir outflow discharge (m3 / s), and the advantage of irrigation (Rupiah) Results of the analysis showed that the dynamic yield optimization program the irrigation intensity of 228.57%, the advantage of irrigation Rp. 702,830,000.00.Keywords: Optimization, Planning and Planting Pattern, Inflow, Outflow, Gain irrigation, Dynamic Deterministic
EVALUASI DAN SIMULASI POLA OPERASI WADUK TILONG DI KABUPATEN KUPANG Tampani, Yan P. S.; Soetopo, Widandi; Harisuseno, Donny
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 7, No 1 (2016)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Abstrak : Pembangunan Waduk Tilong bertujuan untuk memenuhi kebutuhan air irigasi dan air baku. Waduk Tilong terletak di Desa Oelmasi, Kecamatan Kupang Tengah, Kabupaten Kupang. Tujuan studi ini untuk mengoptimalkan kebutuhan air irigasi dan air baku. Data-data yang dibutuhkan untuk studi ini adalah data teknis, data lengkung kapasitas waduk, data debit 10 tahun, data kebutuhan air. Simulasi pola operasi waduk adalah simulasi stokastik dengan random search. Hasil evaluasi di waduk Tilong belum ada pola operasi yang baik untuk memenuhi kebutuhan air. simulasi pola operasi waduk Tilong, pada tahun 2005 sampai 2010 terpenuhi 100%, sedangkan tahun 2011 sudah ada periode yang gagal/tidak terpenuhi. Maka pola operasi waduk Tilong dianggap tidak memenuhi kebutuhan sampai akhir rencana usia guna waduk. Pola operasi waduk Tilong 100% menggunakan simulasi stokastik dengan random search, pada tahun 2005 sampai tahun 2016 terpenuhi 100%, tahun 2017 sudah ada periode yang gagal/tidak terpenuhi. Simulasi pola operasi waduk Tilong 80%, hasil yang diperoleh dapat memenuhi kebutuhan air sampai rencana usia waduk Tilong yaitu tahun 2052.Kata Kunci:  Pola Operasi waduk, Simulasi stokastik, random search. Abstract : Tilong reservoir construction aim to irrigation and water supply. Tilong reservoir located in Oelmasi, Kupang District Central Kupang, Kupang. Purpose of this study is to optimize the irrigation and water supply need. The needed data for this study are technical data, reservoir capacity, discharge data of 10 years, water need data. Simulation for reservoir operation rule is stochastic simulation with random search. Results of the evaluation in the Tilong reservoir was not good operation rule to calculate water needs. From the simulation of Tilong reservoir operation rule in 2005 to 2010 were 100%, but failed in 2011. So the rule of Tilong reservoir operation was known that the water storage can not supply all water needs until the end of dam life time. Tilong reservoir operation rule is 100% use stochastic simulations with random search, in 2005 until 2016 are 100%, but failed in 2017. Simulation of Tilong reservoir operation rule  is 80%, the results obtained that Tilong reservoir can supply the water needs until the dam life time design in 2052.Keywords: Reservoir operation rule, stochastic simulations, random search
Studi Optimasi Pola Tata Tanam untuk Memaksimalkan Keuntungan Hasil Produksi Pertanian di Jaringan Irigasi Prambatan Kiri Kecamatan Bumiaji Kota Batu Prasetijo, Hari; Soetopo, Widandi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 2, No 2 (2011)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Di Jaringan Irigasi Prambatan kiri terjadi kekurangan air pada penerapan pola tata tanam eksisting penyebab utama terjadinya kekurangan air tersebut karena adanya penyimpangan dalam pelaksanaan pola tata tanam yang telah ditetapkan , misalnya pada saat musim kemarau yang seharusnya diperuntukkan untuk tanaman polowijo oleh petani diganti menjadi tanaman padi. Tujuan dari penelitian ini adalah untuk mengetahui berapa luas tanam dan keuntungan yang diperoleh pada kondisi eksisting dan kondisi setelah dioptimasi, sedangkan manfaatnya adalah sebagai informasi bagi instansi terkait dan petani setempat tentang pola tata tanam yang sesuai dan hasilnya maksimal. Metode yang digunakan dalam penelitian ini adalah optimasi pola tata tanam dengan program linier dengan menggunakan pakket program solver. Hasil optimasi dari beberapa alternatif pola tata tanam yang dicoba dipilih alternatif ke II (Padi/Apel - Padi/Palawija/Apel - Padi/Palawija/Apel), karena diperoleh keuntungan yang paling maksimumKata kunci : pola tata tanam, pemberian air irigasi, optimasi program linier
Optimasi Pola Operasi Waduk Sutami Menggunakan Model Pemrograman Linier Kabur (Fuzzy Linear Programming) Abel, Yenson Priyadi; Rispiningtati, Rispiningtati; Soetopo, Widandi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 6, No 1 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Sutami Reservoir is located in Karangkates Village, Sumber Pucung District, Malang Regency. Its primary benefits are for flood control, irrigation, power generation of 3 x 35 MW, and to supply a minimum discharge of 56 m 3 /sec for downstream regions. Early on, it was planned that the minimum discharge for the hydropower turbine would be 25 m /sec and the maximum discharge would be 51.39 m 3 /sec. In its 40 years of age, the turbine has only been capable of handling a maximum discharge of 46.09 m 3 /sec. Electricity production can be maintained by optimizing the outflow that enters the turbine. A model was designed using a fuzzy linear programming model, which is combined with a simulation model for reservoir operating rule performance evaluation. In this study, an optimization of 11 years was obtained, in the form of optimal energy production of 5606.66 GWh, a new rule curve for the regulation of water surface levels, and a simulated result of 100% reliability for the model and existing implementation.Keywords : Fuzzy linear programming, optimization, simulation, reservoir operation rule, Sutami reservoir.
PENENTUAN KINERJA IRIGASI PADA 16 BANGUNAN UTAMA (SECARA SERI) DI DAERAH IRIGASI JILU, KABUPATEN MALANG Sayekti, Rini Wahyu; Soetopo, Widandi; Agisaqma, La Ode
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 3, No 1 (2012)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Irrigation is necessary in the management are of determining the existence of an effort to assess the performance of a Regionnal Irrigation that in the future can be evaluated for better performance. At the time Jilu Irrigation Region there are 16 irrigation and served the rice irrigation area of 992 ha.In this study of irrigation performance assessment of physical and non physical condition. Where the physical assassement include the condition of building ang irrigation channels on each network, where as the non physical assessment procedures include the application of cropping pattern and techniques of water. The techniques here is the uniformity of water delivery, water delivery efficiency, and adequacy. The data used is the physical data of buildings on time Jilu Irrigation Region, the Global Plan of planning, rainfall data 2001 to 2011, discharge data on intake in the year 2001 to 2011.The result on condition assessment of the Jilu Irrigation Region time overall result obtained for 72,6% obtained from the percentage of the physical condition of 78,09% the percentage of cropping pattern of the application of 64,582, and the percentage of assessment techniques for 75,358% of water, then from the results analysis is performed of determining the overall performance of irrigation.Based on standart guidelines regarding the performance of irrigation areas. Research and Development Center of Water Resources in 2003 mentions irrigation performance assessment result is good if > 70%, is enough if the results of the assessment range from 50% to 70% and said to be badly damaged or if the results of assessment < 50% . Of the parameters that already axists then the overall performance of the Jilu Irrigation Region time said to be good with the percentage value of 72,6%Keywords: assessment of physical, the application of cropping pattern, adequacy, the uniformity, water delivery efficiency, Research and Development Center of Water Resources.
Studi Optimasi Pola Tanam Daerah Irigasi Kosinggolan Di Kabupaten Bolaang Mongondow Rudson, Rony; Soetopo, Widandi; Limantara, Lily Montarcih L
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 5, No 1 (2014)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Irrigation areas of Kosinggolan which is spread in Dumoga plains has potential broad in 5381 acres and irrigated functional areas 3865 acres at this time. After 28 years in operation Kosinggolan weir discharge decreased that effect on agricultural production. Due to the discharge limitations in Kosinggolan implementing the provision of irrigation water the class system is divided into three planting periods. Linier Optimization and Sensitivity Analysis to the crop pattern has been using Solver facility from Microsoft Excel.Based on the results ofthe conducted optimization analysis obtained extensive results optimum crop rice at dry conditions, condition low, under normal conditions and sufficient conditions: crop rice from 1450 – 3865 acres. While the maximum profit results in dry conditions, under conditions of low, under normal conditions and sufficient conditions: from Rp 11.133.750.357,00 until Rp33,200,350,000,00. For sensitivity analysis results of obtained land area sensitive: in dry conditions between, the low condition, under normal conditionsand the sufficient conditions: from 0–9307 acres.Keywords: irrigation, linier optimization, sensitivity
ANALISA PERHITUNGAN EVAPOTRANSPIRASI RUJUKAN (ET0) DENGAN BEBERAPA PENDEKATAN EMPIRIS DI STASIUN METEOROLOGI KLAS I JUANDA SURABAYA Visi Murpratiwi, Aisyah; Harisuseno, Donny; Soetopo, Widandi
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 2 (2019)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

ABSTRAK: Evapotranspirasi merupakan data hidrologi yang sangat penting untuk menentukan permodelan hidrologi. Oleh karena itu studi ini menganalisa metode perhitungan evapotranspirasi rujukan (ET0), yaitu, Blaney Criddle, Makkink, Thornthwaite, Penman FAO, dan Model Regresi Linier Berganda. Studi ini menggunakan data iklim (Suhu, Kecepatan Angin, Kelembaban Udara, Lama Penyinaran, Tekanan Udara, dan Radiasi Matahari) di Stasiun Meteorologi Klas I Surabaya. Hasil analisa dari studi yaitu menguji dan menentukan metode yang terbaik untuk lokasi studi. Metode terbaik ditentukan melalui beberapa tahapan kalibrasi dan verifikasi. Tahapan tersebut melakukan beberapa pengujian yaitu Nash-Sutcliffe Efficiency (NSE), Root Mean Squared Error (RMSE), Koefisien Determinasi (R2), dan Kesalahan Relatif (Kr). Berdasarkan hasil pengujian, metode yang terbaik adalah model regresi linier berganda yang dipengaruhi 4 data iklim (suhu, kecepatan angin, kelembaban udara, dan lama penyinaran). Sehingga perhitungan evapotranspirasi rujukan (ET0) model regresi linier berganda yang dipengaruhi 4 data iklim dapat diterapkan pada lokasi studi. Kata Kunci: Evapotranspirasi Rujukan, Blaney Criddle, Makkink, Thornthwaite, Penman FAO, Model Regresi Linier Berganda   ABSTRACT:. Evapotranspiration is a hydrological data that is very important for determining hydrological modeling. Therefore this study analyzes the method of calculation reference evapotranspiration (ET0), namely, Blaney Criddle, Makkink, Thornthwaite, FAO Penman, and the Multiple Linear Regression Model. This study uses climate data (Temperature, Wind Speed, Air Humidity, Length of Radiation, Air Pressure, and Solar Radiation) at the Class I Surabaya Meteorological Station. The results of the study analysis are testing and determining the best method for the study location. The best method is determined through several calibration and verification stages. The stages carried out several tests, namely Nash-Sutcliffe Efficiency (NSE), Root Mean Squared Error (RMSE), Determination Coefficient (R2), and Relative Error (Kr). Based on the results of testing, the best method is multiple linear regression models that are influenced by 4 climate data (temperature, wind speed, air humidity, and duration of irradiation). With the result that calculation of reference evapotranspiration (ET0) multiple linear regression model that is influenced by 4 climate data can be applied to the study location. Keywords: Reference Crop Evapotranspiration, Blaney Criddle, Makkink, Thornthwaite, Penman FAO, Multiple Linear Regression Model.
ANALISA DEBIT MENGGUNAKAN METODE NRECA UNTUK PERHITUNGAN NERACA AIR SUB DAS METRO Ambarwati, Arum Nurwidya; Limantara, Lily Montarcih; Soetopo, Widandi
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 2 (2019)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

ABSTRAK Pertumbuhan jumlah penduduk serta pembangunan di berbagai sektor mengakibatkan bertambahnya kebutuhan air. Berdasarkan hal tersebut maka diperlukan analisa neraca air untuk melihat keseimbangan antara ketersediaan air dengan kebutuhan air di Sub DAS Metro untuk beberapa tahun kedepan. Neraca air di Sub DAS Metro dilakukan dengan menganalisa ketersediaan air menggunakan metode NRECA (National Rural Electric Cooperative Association) dengan keandalan 80%. Kebutuhan air yang dihitung yakni kebutuhan air domestik, non domestik, industri, peternakan, perikanan dan irigasi. Dari hasil analisa neraca air selama 25 tahun kedepan menunjukkan kondisi surplus untuk semua tahun dimana ketersedian air dianggap tetap yakni 532,72 m3/tahun. Dari hasil tersebut dapat disimpulkan bahwa ketersediaan air dapat mencukupi seluruh kebutuhan air di Sub DAS Metro. Kata Kunci : Sub DAS Metro, NRECA, Ketersediaan Air, Kebutuhan Air, Neraca Air.   ABSTRACT The growth of population and development in various sectors led to increased water needs. Based of this, it is necessary to analysis the water balance to see the balance between water supplies and water needs at Metro Watershed for the next few years. Water balance analysis at Metro Watershed is conducted by analysing water supplies using NRECA (National Rural Electric Cooperative Association) with 80% reliability. Water demand is calculated namely the demand for domestic, non-domestic, industrial, farms, fisheries, and irrigation. From the result of the water balance analysis for the next 25 years shows a surplus condition for all years that availability of water is considered to remain 532,72 m3/year. From the result, it can be concluded that water availability can be adequate for all watern eeds in Metro Watershed. Keywords: Metro Watershed, NRECA, water demand, water supplies, water balance.
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 Lilly Montarcih Limantara, Lilly Montarcih Lily M. Limantara Lily Montarcih Limantara Lily Montarcih Limantara M. Bisri Maskur Efendi, Maskur Moh. Hilmi Moh. Sholichin Moh. Sholichin Muhammad Ilham Nuf'a, Hilma Pitojo Tri Juwono Putri Dita Larasati Qomarul Huda, Qomarul Rahmah Dara Lufira Rendra Arif Yudiarso Rini Wahyu Sayekti 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 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