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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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An Assessment of Sea Wall Capabilities at Penimbangan Beach in Buleleng Regency Yanti Dewi, Ni Komang; Aryastana, Putu; Gede Suranata, Putu; Windy Candrayana, Kadek
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 15 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2024.015.02.4

Abstract

Penimbangan Beach, located in Bakti Seraga Village, Buleleng, has functioned as an area for fishermen to catch fish but has now been changed to become a tourism destination. The coastline of Penimbangan Beach is 803 meters, according to direct measurements with coastal protection sea wall along the shoreline in the field. With the change in function, many traders’ kiosks are now selling on the sea wall, and coastal protection has caused damage. Besides that, wave overtopping often occurs during high tides, causing objects that should be protected by the sea wall to be exposed to wave overtopping. Based on the issues mentioned above, a coastal damage assessment is required, divided into 16 segments, each segment being 50 meters. The results of the coastal damage assessment yielded the scales of Priority C (preferred), Priority D (less prioritized), and Priority E (not prioritized). The result of evaluating the physical condition of all of the sea walls received fairly good results. The performance function of the coastal protection at Penimbangan Beach shows that segments 1-5 have good functional performance, requiring only monitoring of the sea wall. However, segments 6-16 have poor functional performance due to wave overtopping, necessitating a reassessment of the sea wall.
Assessment of the Pelangwot-Sedayu Lawas Floodway Capacity for Managing Floods in the Lower Bengawan Solo River Amalia, Dewi; Sumiadi, Sumiadi; Dermawan, Very; Ivan, Hans
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 15 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2024.015.02.7

Abstract

The Pelangwot-Sedayu Lawas floodway is the main infrastructure for a flood control system in the Lower Bengawan Solo. However, frequent flooding still occurs in the Turi and Kali Tengah subdistricts of Lamongan Regency. Therefore, the number of emergency gates in the floodway has been increased. An important aspect of this flood control is ensuring that, despite the increase in capacity of the Pelangwot-Sedayu Lawas floodway gates, the water surface elevation at Pelangwot does not lead to overflow and that the floodway channel from Pelangwot to Sedayu Lawas effectively conveys the maximum discharge. This study aims to assess the capacity of the emergency gates to convey a flood discharge of 1000 m³/s and the capability of the floodway channel to accommodate flows from both the emergency gates and outlet of Jabung Retarding Basin, which amounts to 1140 m³/s. The analysis of floodway capacity involves calculating the discharge through five floodway gates and simulating the floodway channel to manage flood discharge using the HEC-RAS 5.0.7 software. Results indicate that with a gate opening of 5 m, the five gates can discharge 1000 m³/s at a water surface elevation of +7.03 masl, reducing floods by 32.09%. To improve capacity, the embankment must be elevated by 1.0 meters, with a crest width of 4.00 meters along the left bank for 4.4 km and the right bank for 4.35 km. These modifications are essential to enhance flood management and protect downstream areas.
Impact of Land Use Changes on Irrigation Systems and Water Balance in the Cimanuk River Basin Ariyani, Dwi; Trisno Lestari, Rini; Prautama Dewi, Atri; Yasmin Kanwar, Sonia; Putri Kirani, Fachriza
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 15 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2024.015.02.9

Abstract

Water resources are crucial for life and the economy, especially in the Cimanuk River Basin, where irrigation supports agricultural productivity. Population and economic growth have led to significant changes in land use that impact irrigation systems. The shift from agricultural to non-agricultural land, along with factors such as urbanization, flooding, drought, and pests, has reduced the area of farmland and decreased rice productivity in West Java. This study aims to analyze changes in land use and their effects on the irrigation system in the Cimanuk River Basin. The research methods include analyzing combined data such as remote sensing, statistical tests, evapotranspiration calculations, and irrigation water needs to assess the water balance of irrigation based on water availability and demand. The findings reveal a significant decrease in agricultural land coverage, from 37.48% of the total area of the Cimanuk River Basin in 2000 to 22.79% in 2023. This change in land cover affects irrigation needs and impacts the water balance in the Cimanuk River Basin, resulting in a water deficit between availability and irrigation needs. The water deficit occurs during peak dry months, such as July, with a maximum deficit of 215.72 m³/second, indicating that the water requirements for irrigation are often not met optimally.
Hazards and Risk Assessment for Physical Hydraulic Structures of Dam Model in the Laboratory Wiyono Wit Saputra, Anggara; Rubiantoro, Prasetyo; Tri Juwono, Pitojo; Harisuseno, Donny; Sidqi Fidari, Jadfan
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 15 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2024.015.02.10

Abstract

Some workers often neglected Occupational Health and Safety (OHS) regulations in the laboratory environment, resulting in potential hazards that ultimately led to workplace accidents. The physical hydraulic model of dam structures in this laboratory involved activities that posed potential risks. Hazard assessment and the risk of workplace accidents were identified through direct field observations to pinpoint potential risks associated with these activities. Questionnaires and interviews with personnel involved in laboratory activities, including workers and technicians, were conducted to gather relevant data concerning the research problem. This study aimed to identify potential risks and hazards using a Job Safety Analysis approach and to assess the risks associated with each activity stage. Risk levels at various stages of work were determined through job safety analysis within the OHS management system. Risk identification encompassed impacts on individuals, equipment, materials, and the environment. The highest high-risk and moderate-risk identified from the assessment are the demolition of the previous dam model in the site preparation step and the preparation of the electric water pump with a capacity of 100 l/second in the running stage. Generally, based on the identified risk categories, risk mitigation for dam model testing work in the laboratory included using Personal Protective Equipment (PPE) such as ear protection, masks, helmets, safety shoes, and gloves to prevent work-related accidents.
Reproduction and Characterization of Sedimentation Phenomena in Tanjung Perak Port through Numerical Simulation Using Delft3D Camila, Adristi Nur; Murakami, Keisuke; Sajali, M. Amar; Haribowo , Riyanto
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 1 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.01.7

Abstract

Tanjung Perak Port in Surabaya, one of the biggest ports in Indonesia, faces significant sedimentation problems that can affect operational capacity. This research aims to investigate these sedimentation problems using a 3-dimensional numerical model with Delft3D software, analyzing wave, tidal, and topographic changes to recommend effective sediment management. This research focuses on Tanjung Perak Harbor in Surabaya, Indonesia, using Delft3D numerical modeling to analyze sedimentation phenomena and examine topography, tidal, wave, and sediment characteristics, and river inflow data from the Mas River and Lamong Rivers. This research divides the depth into three layers with the smallest grid size dx= 10 m and dy= 10 m. Sediment diameter data, used in this simulation with an average grain size (D50) of 0.28 mm from inside the port, will be simulated simultaneously with tidal and wave motion. This simulation is for 1 month using a scale factor of 12, making the simulation equal to 1 year. From the simulation results, the effect of wave movement is relatively small. At 3 locations in the Tanjung Perak port area, sedimentation with an average change in depth of 0.8 m/year was caused by sedimentation carried from the Lamon River and Mas River. Therefore, dredging recommendations are conducted to reduce sedimentation in the port area by constructing a jetty at the mouth of the Mas River. The results showed that the average depth increase changed to 0.4 m/year after the jetty was built, but some erosion occurred around the jetty, 0.0056 m/year.
Assessing Liquefaction Risk at Timika Steam Power Plant through Cyclic Stress Ratio Analysis Using Borehole Data Marsudi, Suwanto; Lufira, Rahmah Dara; Sajali, Muhammad Amar; Putra, Sebrian Bessely Mirdeklis; Asmaranto, Runi; Prasetyorini, Linda
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 1 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.01.9

Abstract

Energy infrastructure, particularly power plants, is critical in national and regional development. This study aims to determine the optimal placement and design of the Timika PLTU (power plant) by conducting comprehensive soil and rock investigations, focusing on seismic risks. The primary objective is to assess the geotechnical conditions of the site to ensure structural stability and safety in this high-seismicity zone. Key methods used in this study include borehole drilling, soil classification tests, and seismic hazard analysis. The soil at the site is classified as medium (SD) with Vs values ranging from 175 to 350 m/sec, and the seismic zone’s coefficient (Z) is 0.6, indicating significant seismic potential. The results reveal that specific design measures, such as sheet piles and retaining walls, are necessary to mitigate the risks of lateral collapse in areas with significant soil excavation. Furthermore, seismic design considerations were incorporated to improve the plant’s earthquake resistance. The findings of this study provide essential geotechnical data and practical recommendations, ensuring the safe and resilient construction of the PLTU Timika in a region prone to seismic activity while guiding future infrastructure projects in similar high-risk zones.
Study on Fulfilling Needs and Availability of Clean Water in Manado City in 2045 Mananoma, Tiny; Ratu, Yosua Aditya; Moningka, Frederiko Marchiano Imanuel
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 1 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.01.3

Abstract

Clean water is an essential element for human life. The need for water continues to increase along with population growth. Rivers are a good source of clean water. Understanding water availability in the river that we will use as a clean water source is very important. In 2022, Manado City will have a population of 454,606 people. This study aims to determine the water demand in Manado City in 2045 and whether the Tondano River will be able to meet the water demand by 2045. This research uses a quantitative method, where the data used includes Tondano River discharge data processed using the analysis of water resource availability and Manado City population data using exponential regression analysis. In 2045, the population is projected to reach 549,438 people. Water demand is calculated based on the domestic, non-domestic, and water loss sectors. The total water demand in 2045 was 1,860.08 liters per day. If the total water demand is added to the peak hour factor, the total water demand becomes 5,533.28 liters, while the mainstay discharge of the Tondano River for Q95 is 4,511.34 liters per day. It can be seen that in 2045, the Tondano River can still meet the clean water needs of the Manado community. However, if the peak hour factor for Q95 is added, the Tondano River cannot meet the clean water needs of the Manado people.
Analysis of CHIRPS and GPM-IMERG and Discharge Modeling with Transfer Function-GRU in Gembong Watershed, Pasuruan Andriyani, Setinda Eka; Suhartanto, Ery; Sisinggih, Dian
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 1 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.01.2

Abstract

Rain gauges in Indonesia are often unevenly distributed, with significant gaps in data availability. As an alternative, satellite precipitation products (SPPE), such as CHIRPS and GPM-IMERG, are increasingly used for precipitation estimates. Additionally, discharge data is frequently unavailable for extended periods, making rainfall-discharge modeling essential. This study aims to evaluate the performance of two SPPEs, CHIRPS and GPM-IMERG, in the Gembong watershed and identify the best rainfall-discharge model. The study focuses on black-box models, using precipitation as input and discharge as output, without discussing model uncertainty. The two SPPEs were compared using continuous statistics, categorical metrics, and volumetric indices. CHIRPS was found to outperform GPM-IMERG. Three models were then tested: the transfer function (TF) model, SARIMAX(1,0,0)(0,1,1)12(1,0), a hybrid SARIMAX-GRU model, and a standalone GRU model. The models were validated using correlation (r), Nash-Sutcliffe efficiency (NSE), and the ratio of root mean square error to standard deviation (RSR). The GRU model demonstrated the best performance, achieving r = 0.876 (very strong), NSE = 0.752 (very good), and RSR = 0.498 (very good). This research underscores the importance of accurate discharge prediction for water resource management in Indonesia. By applying innovative modeling techniques, the study contributes to improved water management strategies, with potential applications in flood management, agriculture, infrastructure planning, and policy development, ultimately supporting Indonesia’s broader sustainability goals.
Flood Discharge Reduction Analysis of Ciawi and Sukamahi Dry Dams Dasylva, Iqbal Zaenal; Sumiadi, Sumiadi; Prasetyorini, Linda; Beselly, Sebrian Mirdeklis
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 1 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.01.1

Abstract

Floods are a natural disaster often experienced by the people of Indonesia, especially in Jakarta. In 2022, the government inaugurated the upstream area of ​​the Ciliwung River Basin. The research provides an in-depth analysis of the reductions achieved by the two dry dams across a range of return periods (Q), specifically 2, 5, 10, 25, 50, and 100 years, highlighting their performance in reducing peak flow volumes and their effectiveness in flood risk management under varying hydrological conditions. Currently, both do not have intake on their conduit channels. With this research, it is hoped that it can be determined whether or not the reduction results will be optimal by adding intake to their conduit channels. The results and analysis obtained on the Ciawi dry dam, namely Q2 can reduce up to 73.49%; Q5 can reduce up to 76.17%; Q10 can reduce up to 78.49%; Q25 can reduce up to 80.33%; Q50 can reduce up to 66.93%; and Q100 can reduce up to 54.98% while for the results and analysis of reduction in the Sukamahi dry dam for Q2 can reduce up to 78.40%; Q5 can reduce up to 82.24%; Q10 can reduce up to 83.38%; Q25 can reduce up to 84.41%; Q50 can reduce up to 84.94%; and Q100 can reduce up to 85.26%.
Flood Disaster Mitigation Strategy due to Land Cover Change in Kalijompo Sub-watershed Kartikasari, Adelia Nur Isna; Muttaqin, Dai Agus; Derka, Icha Tatrisya; Pranantya, Vanadani; Robbani, Hilma Wasilah
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 1 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.01.4

Abstract

Kalijompo sub-watershed is included in the Bedadung watershed of Jember Regency. Bedadung watershed is the largest watershed in Jember, and it has a land cover change. One of the factors influencing land cover change is forest fires, which cause a significant reduction in forest area. The significantly reduced forest area will impact increasing river discharge and result in flooding downstream. The downstream of Kalijompo is located in the city center of Jember, which has a dense residential area. Therefore, it is necessary to conduct a flood mitigation strategy. This research aims to assess flood risk and ideal land cover management so that this research can be used as a basis for designing flood disaster mitigation strategies due to land use change. The Soil Water Assessment Tool application models the flood response to land cover and determines sub-watersheds that contribute highly to watershed damage. The flood response model was used as the basis for simulation by creating several land cover scenarios to find the appropriate and optimal land use. Flood risk assessment was obtained by combining the components of flood hazard and vulnerability. Flood mitigation strategies were derived from the land use scenarios complemented by Strengths, Weaknesses, Opportunities, and Threats analysis to identify various factors. The results showed that Kalijompo contributed significantly to watershed damage, and 21.93% of the Kalijompo area was at a high flood risk level. One of the mitigation strategies is managing forest land use, which should be 30% of the total Bedadung watershed area.

Page 34 of 38 | Total Record : 374

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