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Jurnal Teknik Pengairan Jurusan Teknik Pengairan Fakultas Teknik, Universitas Brawijaya Jl. MT. Haryono 167 Malang
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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 10 Documents
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Search results for , issue "Vol. 14 No. 2 (2023)" : 10 Documents clear
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.
Water Quality Status Determination Using Pollution Index and WQI Methods in Kalimas River, Surabaya Aristananda, Wibi Idho; Yuliani, Emma; Prayogo , Tri Budi
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.2023.014.02.7

Abstract

The Kalimas River, managed by the Surabaya City Government for both eco-tourism and as a crucial water source for the Kalimas River basin residents, undergoes comprehensive examination in this study. The objectives encompass assessing water quality status, mapping its distribution, and forecasting waste discharge. Employing the Pollution Index and Water Quality Index methods, findings indicate that, according to the Polluter Index, the water quality predominantly falls within the lightly polluted category, ranging from 76.19% to 90.48%. Conversely, the NSF-WQI method portrays a more concerning picture, categorizing the Kalimas River’s water quality as heavily polluted within the same percentage range. As of 2021, the existing waste discharge stands at 0.392m3/s, serving a population of 233,563 people. Mapping results highlight a general trend of good water quality downstream, with the Upper Kalimas experiencing more compromised conditions. These revelations underscore the critical need for strategic interventions and environmentally conscious policies to address escalating pollution concerns. Ensuring the sustainability of the Kalimas River, pivotal as both a tourist attraction and vital water source, requires concerted efforts in pollution mitigation and water quality management. This study serves as a valuable foundation for informed decision-making in the pursuit of a healthier and more sustainable Kalimas River ecosystem.
Digital Analysis Method for Predicting Flood in A River of Lhoksukon Aceh North Indonesia Wijaya, Riki
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.2023.014.02.8

Abstract

The major floods that occurred in 2022 in Lhoksukon, North Aceh, Indonesia, had a severe impact on infrastructure damage and loss of life, making it necessary to analyze and predict its impact. In this regard, digital methods can effectively analyze and predict the impact of such natural disasters. The digital method is processing digital data through software to produce the desired information. Based on the results of the digital analysis, it has been found that the flood discharge in the Lhoksukon area of North Aceh is around 1848 m3/second with a flow velocity of about 3.484 m/second. This high flow velocity can cause significant damage to the infrastructure in the affected areas. The flood height in the river area ranges from 9.545 m from the riverbed, which is a cause for concern. The increase in water level will cause an expansion of the inundation area in the river area, which can lead to further damage. Therefore, the results of this study can be used to develop effective flood mitigation strategies and infrastructure planning in the affected areas. Additionally, the study's findings can be used to develop early warning systems to alert people in the affected areas to evacuate before the floods reach dangerous levels.
Implementation of Building Information Modeling (BIM) on Drainage Channel Design in UB Forest Sumberwangi Area Rika Rosita Sari; Dermawan , Very; Cahya , Evi Nur
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.2023.014.02.9

Abstract

Road damage in the UB Forest Sumberwangi Area, Karangploso District, Malang Regency, is one of the harmful impacts of the drainage system. This study aims to analyze an accurate and efficient drainage system by applying modern methods, namely Building Information Modeling (BIM). By using BIM, the analysis of drainage work becomes faster and more accessible than with conventional methods. BIM is beneficial in building and analyzing drainage network data quickly and effectively and can help expand it to provide more accurate results. BIM can integrate models based on technical data and simulate development information into a three-dimensional model. BIM is used to perform 3D modeling of drainage channels using Autodesk Civil 3D, as well as analyzing channels from both hydrology and hydraulics with Storm and Sanitary Analysis (SSA). After calculating the design for a 5-year return period rainfall, channel dimensions of 50 x 50 cm and 30 x 30 cm were obtained. Based on the hydraulic analysis, it is known that several points have velocities that exceed the maximum velocity for the concrete surface (v < 3 m/s), so it is necessary to build a drop structure with h = 1 m. The quantity take off and the volume are calculated by Civil 3D for cut and fill work 7824.07 m3 and 1389.79 m3, respectively.
Study Planning of Check Dam as Sediment Controller at Sumbersari UB Forest Area Oktaviariyadi, Nabila; Dermawan, Very; Saputra , Anggara Wiyono Wit
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.2023.014.02.10

Abstract

The construction of a check dam is proposed as a solution to address multiple environmental challenges in the upstream region of a river. Primarily, the focus is on erosion control, the deceleration of debris flow, and the prevention of sedimentation. The strategic implementation of this plan encompasses a range of methodologies, including topographical measurements, geotechnical testing, hydrological analysis, hydraulics analysis, and the meticulous development of a budget plan for the actual construction of the check dam. Within the study area, sedimentation issues stem from a debris flow characterized by a sediment discharge rate of 0.657 m3/s. This phenomenon coincides with a significant 25-year return period flood discharge of 9.134 m3/s. The proposed check dam emerges as a crucial intervention capable of effectively mitigating the situation for approximately 1 hour and 13 minutes, providing a targeted response to the persisting debris flow. To execute this plan, an estimated budget of IDR 460,859,000 has been projected. This financial allocation encompasses the expenses associated with topographical measurements, geotechnical testing, hydrological and hydraulics analyses, as well as the actual construction of the check dam. Overall, the proposed check dam stands as a multifaceted solution designed to harmonize environmental conservation with sustainable water resource management.

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