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Jurnal Teknik Pengairan: Journal of Water Resources Engineering
Published by Universitas Brawijaya
ISSN : 20861761     EISSN : 24776068     DOI : 10.21776
Core Subject : Engineering,
Engineering
Jurnal Teknik Pengairan is a scientific journal published regularly twice per year by Faculty of Engineering, Universitas Brawijaya. The paper submitted in this journal covers the fields of Water Resources Information System, Water Resources Conservation, Water Resources Utilization and Efficiency, Water Structure Engineering Planning and Water Resources Engineering Basic Knowledge. The submitted paper can be a summary of research reports or scientific literature review. The language used in this journal is either English or Indonesian.
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Articles 374 Documents
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Permodelan Sumur Resapan Inovatif untuk Konservasi Air Tanah Permeabilitas Rendah Daerah Kota Malang Yasnuar Muntaha; Tri Budi Prayogo; Emma Yuliani
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 13 No. 1 (2022)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2022.013.01.04

Abstract

Air merupakan kebutuhan pokok manusia yang sebagian besar berasal dari dalam tanah. Konservasi air tanah menggunakan sumur resapan merupakan alternatif dalam menambah cadangan air tanah pada tanah berjenis lanau-lempung seperti Kota Malang yang memiliki permeabilitas tanah rendah. Dalam mencapai tujuan tersebut dilakukan penelitian dengan metode eksperimen pembuatan sumur resapan inovatif yang dapat memaksimalkan masuknya air ke dalam tanah pada lokasi yang mempunyai permeabilitas rendah. Penelitian ini mengkaji, menganalisa dan membandingkan hasil pengujian sumur resapan konvensional dan inovatif. Analisis debit yang dirancang menggunakan Metode Rasional. Perencanaan dimensi dihitung dengan rumus Sunjoto dan desain serta model sumur resapan yang dibuat menggunakan material paving, pasir, semen, kerikil, pipa diameter 10 cm, penutup biopori, sampah organik, air, dan geotekstile. Model sumur resapan inovatif direncanakan dengan ketinggian 0,42 m dengan diameter 0,6 m. Dari hasil analisa pengujian model sumur resapan yang sudah di terapkan dalam skala lapangan, sumur resapan inovatif lebih efektif dari pada sumur resapan konvensional.
Perbandingan Pola Distribusi Hujan Terukur dan Hujan Satelit PERSIANN di DAS Progo Dimas Gustoro; Joko Sujono; Karlina Karlina
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 13 No. 1 (2022)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2022.013.01.03

Abstract

Pola distribusi hujan sangat diperlukan dalam analisis transformasi hujan aliran khususnya untuk penentuan hidrograf banjir rancangan bangunan hidrolik. Distribusi hujan ini sangat tergantung dengan data hujan durasi pendek yang umumnya sangat terbatas, sehingga sebagai solusi dapat digunakan data hujan berbasis satelit. Distribusi hujan satelit dapat digunakan apabila distribusi yang dihasilkan memiliki pola distribusi yang mendekati hujan terukur. Dalam analisis ini data hujan yang digunakan adalah data hujan jam–jaman dari beberapa stasiun hujan yang terletak di DAS Progo dan data hujan satelit PERSIANN yang lokasinya disesuaikan dengan koordinat stasiun hujan DAS Progo. Data hujan yang dianalisis merupakan kejadian hujan berurutan yang memiliki kedalaman ≥ 50 mm untuk data tahun 2013 – 2015. Hasil penelitian menunjukkan bahwa distribusi hujan satelit PERSIANN memiliki pola yang mendekati pola hujan terukur dengan nilai koefisien r rerata sebesar 0,98. Hasil tersebut menunjukkan bahwa hujan berbasis satelit dapat digunakan sebagai alternatif penentuan pola distribusi hujan apabila data hujan terukur tidak tersedia. Namun demikian, analisis serupa perlu dilakukan untuk karakteristik hujan di DAS yang berbeda.
Model Aliran 2-D untuk Memprediksi Gerusan dan Sedimentasi di Saluran Jakabaring Sport City (JSC) Palembang Achmad Syarifudin
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 13 No. 1 (2022)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2022.013.01.08

Abstract

Penelitian ini bertujuan untuk mengkaji gerusan (erosi) dan sedimentasi (deposisi) di saluran utama Jakabaring Sport City (JSC) yang berada di Sub-DTA (Daerah Tangkapan Air) Jakabaring. Metode penelitian yang dipakai dalam kajian ini menggunakan pendekatan model fisik aliran 2-Dimensi (2-D) dengan saluran standar (standard flume) yang ada di laboratorium Hidrolika Fakultas Teknik Universitas Bina Darma Palembang. Data hasil penelitian di analisis dimensi dengan metode Langhaar untuk mendapatkan hubungan antara variabel terkait tersebut untuk mendapatkan parameter tak berdimensi. Hasil penelitian diperoleh kedalaman gerusan (de) maksimum sebesar 0,9 cm terjadi pada waktu “running test” selama 5 menit di model dengan nilai R2=0,887 atau R=0,7867 berarti 78,67% kedalaman gerusan (erosi) yang terjadi dipengaruhi oleh faktor waktu (t), jarak (x), dan kecepatan aliran (v). Sedangkan besarnya sedimentasi (deposisi) maksimum sebesar 0,5 cm terjadi pada waktu “running test” selama 5 menit di model dengan nilai R2=0,805 atau R=0,6480 artinya terdapat 64,80% sedimentasi (deposisi) dipengaruhi oleh faktor waktu (t), jarak (x), dan kecepatan aliran (v).
Analisis Biaya Pengelolaan Air Dengan Metode Sistem Dinamik Pada Waduk Jatigede Ussy Andawayanti; Harya Muldianto; Ery Suhartanto; Widandi Soetopo
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 12 No. 2 (2021)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2021.012.02.11

Abstract

Pengoperasian dan pemeliharaan pada suatu waduk sangat penting dalam keberlanjutan fungsinya. Hal ini harus ditunjang dengan biaya pengoperasian dan pemeliharaan yang memadai. Adapun biaya pengoperasian waduk yang memadai terdiri dari biaya pengelolaan air dari pengguna air dan subsidi dari pemerintah jika diperlukan. Operasi dan pemeliharaan yang berkelanjutan harus menjaga subsidi pemerintah pada tingkat minimum, sementara pada saat yang sama harus juga mempertimbangkan kesediaan pengguna air untuk membayar. Kedua parameter subsidi dan iuran pengelolaan air ini membentuk suatu loop umpan balik yang saling bergantung dalam menentukan biaya operasi dan pemeliharaan, yang termasuk dalam fenomena dinamika sistem. Studi ini bertujuan untuk menghitung besarnya subsidi pemerintah dan besarnya iuran pengelolaan air agar mencapai pengelolaan sumber daya air yang optimal. Dengan pendekatan sistem dinamik dengan menggunakan program Powersim.. Analisis ini dilakukan di Waduk Jatigede Jawa Barat – Indonesia. Waduk Jatigede dengan volume 877 juta m3 yang digunakan untuk irigasi, pasokan air publik dan PLTA. Berdasarkan hasil simulasi agar mencapai pengolaan SDA yang optimal, didapat subsidi sebesar 0% pada kondisi normal, 0% pada kondisi basaha dan 0,88% pada kondisi kering. Adapun iuran pengelolaan air per m3 untuk PDAM Rp. 111,00, PAM Industri Rp. 175,00, Industri langsung Rp. 236,00, PLTA Rp.35.00/KWH dan subsidi Pemerintah Rp. 191.760.000,-.
Study of Flood Control Due To Land Use Change at the Estuary of Bang River, Malang Syaiful, Amrie; Dermawan , Very; Purwati, Endang
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 2 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.02.2

Abstract

Water offers many advantages that are essential for the preservation of human existence. Excessive quantities of water, such as flooding, can negatively impact human beings. The land utilization within a watershed (drainage area) plays a crucial role in the frequency and impact of flooding events. Instances of land use changes that resulted in flooding happened in the Bang Sub-watershed, located in Malang Regency. A comprehensive and up-to-date examination of flood management solutions is required. This study seeks to offer technical suggestions for flood management in the Bang Sub-watershed due to land-use alterations, utilizing the HEC-RAS software. Integrated treatment solutions are provided to mitigate the potential damage caused by future flooding. The flood simulation yielded recommendations for mitigating the impact of future floods. These recommendations include the construction of a retarding basin in the upper part of the river with a capacity of 1.4 million m3, as well as the construction of a 654 m long river embankment that is 50 cm. The alteration of the land leads to a decrease in the cross-sectional capacity of the river at the mouth of the Bang River, resulting in annual flooding occurrences. A non-technical approach to enhance the quality of the watershed is implementing reforestation measures to decrease the runoff coefficient.
Determination of Curve Number for the Temef Watershed, Timor Tengah Selatan Regency Welkis, Davianto Frangky; Harisuseno, Donny; Wahyuni, Sri; Beselly, Sebrian Mirdeklis
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 2 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.02.1

Abstract

This study aims to show that the Curve Number (CN) method can represent the relationship between rainfall runoff in the Temef Watershed, an area of ​​East Nusa Tenggara. The method used in this study was quantitative analysis by linking watershed characteristics such as soil, vegetation, and land use with the CN curve number, which shows the potential flow for a certain rainfall. CN data were re-analyzed using a computer program to obtain actual field conditions, which were then classified to obtain land cover quality, soil type, CN value, and Antecedent Moisture Condition (AMC) value for the Temef Watershed. Based on the study's results, it was found that the Temef Watershed was dominated by secondary dry land forest cover, which ranged from 28.50-52.00%. The lithological texture of rocks in the Temef Watershed is dominated by conglomerate and gravel with a gradation rate from medium to high; sandy marl, sandstone, tuft, and dacite of medium to a high gradation; and scaly clay with very low to low gradation. The CN value is 69.45, classified as medium gradation at normal soil moisture levels. The benefits of this result include the practical application of the CN method, the provision of accurate field conditions through re-analysis, insights into dominant land cover and lithological texture, and the establishment of CN values for effective water resource management.
Optimization Utilization Study Storage of Raknamo Dam Amabi Oefeto District Kupang Region Bale, Frits Jeferson; Bisri, Muhammad; Wahyuni, Sri
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 2 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.02.4

Abstract

Raknamo Irrigation area (1323 ha) has problems with water availability, especially during the dry season, which causes a decrease in the productivity of the agricultural products from local communities. This is due to the suboptimal water distribution system in the Raknamo Reservoir. This study aims to analyze and optimize water distribution in the Raknamo Reservoir to obtain the most optimal water distribution to fulfill agricultural land's water needs in various seasons. Optimization analysis is carried out using a deterministic dynamic program. With this program, a complex and large-scale problem can be dispart into several small parts (decomposition), which are then optimized. Based on the analysis results, the maximum profit that can be obtained from the cropping intensity is 16% in the normal season. Meanwhile, the highest increase of the land area is 218.64 ha. It is worth noting that this study uses a deterministic dynamic program for optimization analysis to dispose of the complex problem into smaller, manageable parts. This approach facilitates a more systematic and comprehensive analysis and provides a framework for future decision-making processes related to water management and agricultural planning. The study's methodology and findings can serve as a valuable reference for similar water-related challenges in other irrigation areas, thereby contributing to the broader agricultural research and sustainable water resource management field.
Assessment of Land Erosion Hazard in the Sampean Hulu Sub Watershed, Bondowoso Regency Setyawan, Roeby; Nurtjahjaningtyas, Indra; Hidayah, Entin
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 2 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.02.3

Abstract

The Sub-watershed of Sampean Hulu, located on the slopes of Mount Raung is susceptible to erosion hazards. Erosion indicators have been observed in the irrigation channels, mainly due to frequent sedimentation, which compromises the irrigation infrastructure's optimization and water distribution. To address this, erosion monitoring using the Universal Soil Loss Erosion (USLE) model, along with GIS and remote sensing techniques, is essential. It was found that the irrigation networks associated with Clangap and Tamanan rain gauges are at higher risk due to intense rainfall. Maesan and Wonosari II rain gauges cover a larger irrigation network area, highlighting the need for erosion prevention measures. The dominant soil type, Tv, with a high clay content, is highly susceptible to erosion. Flat and gently sloping slopes have a lower risk compared to steeper slopes, while very steep and steep slopes pose higher erosion risks. Paddy fields and well-managed forest plantations have lower erosion hazards, while bare land and certain agricultural practices contribute to increased erosion risks. The analysis classified the erosion hazard into five classes, with the sub-watershed being predominantly low and very low susceptible to soil erosion. Implementing conservation practices, sustainable land management, and land use regulations are crucial for erosion prevention.
Tsunami – Tides Interaction of the South Coast of Jember Using Delft3D-Flow Narulita, Norma Aulia; Wiyono, Retno Utami Agung; Halik, Gusfan; Pratama, Munawir
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 2 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.02.5

Abstract

The tsunami of June 3, 1994, which originated from a shift in the Indo-Australia plate, resulted in hundreds of casualties and material damage on the south coast of Jember. This study aims to understand the tidal impact of a tsunami in terms of arrival time and wave height. Several simulations of the interaction of tidal waves with tsunami waves were carried out through numerical modeling using Delft3D with modified wave characteristics from the Banyuwangi tsunami on June 3, 1994, as well as using bathymetry data from BATNAS and BIG tide data. The results of the analysis show that tidal waves can be a factor affecting the height of the tsunami waves. The increase in the amplitude of the tsunami waves was considered very local from the three observation points. This is shown at the observation locations of Puger Beach and Watu Ulo Beach, where the maximum wave amplitude occurs when the tsunami occurs independently of 7.102 m and 5.56 m, while at the Tanjung Pelindu observation location, the highest amplitude occurs when the tsunami meets the tides during low tide phase, which is 3.68 m. This research is expected to provide a basic understanding of the dynamic impact of the tidal wave when a tsunami occurs.
Effectiveness of Acacia Wood Charcoal and Coconut Shell Analysis in Reducing Concentrations of Cr (VI) Pollution from Industrial Waste Using Adsorption Method at Laboratory Scale Sholichin, Moh.; Ismuyanto , Bambang; Saptati N.H , AS. Dwi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 2 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.02.6

Abstract

Controlling the concentration of Cr(VI) in industrial wastewater is imperative to adhere to environmental quality standards and mitigate the risk of polluting river waters, ensuring the safety of living organisms and public health. Acacia wood charcoal and coconut shell charcoal have emerged as effective adsorbents capable of reducing Cr(VI) levels. This research seeks to identify the optimal adsorption pH and evaluate the impact of initial adsorbate concentration on Cr(VI) removal, comparing the efficacy of acacia wood charcoal and coconut shell charcoal. The study systematically manipulated process variables, encompassing 2, 4, and 6 pH levels and adsorbate concentrations of 30, 40, and 50 ppm. Charcoal characterization techniques, such as XRF, FTIR, and SNI, were employed alongside analyzing Cr(VI) levels utilizing UV-visible spectrophotometry. Results elucidated that coconut shell charcoal exhibited a higher percentage removal of Cr(VI) at concentrations of 30% (41%), 40% (38%), and 50 ppm (31%), outperforming acacia wood charcoal, which displayed removal percentages of 16%, 14%, and 7%, respectively. Consequently, the research underscores the superior efficacy of coconut shell charcoal in Cr(VI) removal compared to acacia wood charcoal under the specified conditions. The findings contribute valuable insights to optimizing adsorption processes for industrial wastewater treatment, promoting sustainable practices and environmental stewardship.

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