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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 20 Documents
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Search results for , issue "Vol. 15 No. 2 (2024)" : 20 Documents clear
Stability Analysis of Bagong Maindam using Geostudio Fakhruddin, Daffa Budi; Marsudi, Suwanto; Cahya, Evi Nur; Nurjati Hidayat, Muhammad
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.2024.015.02.1

Abstract

This research investigates the stability and seepage analysis of Bagong Dam, which is an important factor in dam planning. The planned dam must withstand various loads and forces acting on it. Seepage analysis was conducted using the Seep/W program in Geostudio software. For dam stability analysis, the Bishop Method was utilized with the assistance of the Slope/W program in Geostudio software. The safety factor (SF) in seepage analysis and dam stability must meet the required threshold to confirm the dam's safety. The results of the seepage analysis for Bagong Dam indicate safety, as the seepage discharge (QNWL = 0.005018039 m3/s; QFWL = 0.005412454 m3/s; and QMWL = 0.002444141 m3/s) is less than 1% of the Bagong River inflow discharge (0.06791 m3/s). In the stability analysis, the safety factor (SF) results for the dam under conditions without earthquakes and 100 and 200-year Operational Based Earthquakes (OBE) indicate that the dam is safe. However, the dam is considered unstable under an earthquake load with a return period of 10,000 years (Maximum Design Earthquake, MDE). Deformation analysis using the Makdisi and Seed Method was performed to ensure its safety. The results indicated that the maximum displacement was less than permissible, indicating that the dam is safe.
Analysis of Flood Risk Areas by Weighting the Analytic Network Process (ANP) Method Suciana, Ajeng Titin; Suhartanto, Ery; Wahyuni, Sri
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.2024.015.02.2

Abstract

Flooding is one of the disasters that often occurs in the Karangmumus Sub Watershed, causing more than 400 housing units to be flooded in 2021. In this study using the Weighted Scoring method, the parameters are soil type, slope, land cover, rainfall, and land use. They determine the weight of each flood parameter using the Analytic Network Process (ANP) method. ANP is a decision-making method that takes into account the relationships and dependencies. This research study aims to identify flood-risk areas that produce flood-risk maps. The ANP analysis results show that the land use parameter weighs 50% of the total weight. The risk class is divided into four parts: not risk, somewhat risk, risk, and very risk. The largest flood-risk area is the “very riskous” class, with an area of 29,288 km2. The suitability of the analysis results with BNPB data is 80%, thus indicating that the suitability is very high. The map of the analysis results with the map from BNPB shows an NSE value of 0.764 and an R-value of 0.956, identifying the plot and the relationship between the two data as very strong. The research results are expected to be a parameter for effective and efficient policy-making in flood disaster management. Map-making uses a Geographic Information System (GIS) with an intersect tool.
Development of Clean Water Network in Ngasinan Village Bojonegoro Regency Rozi, Maksum; Sugiarto Waluyo, Budi; Rizal Sutikno, Fauzul
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.2024.015.02.6

Abstract

Ngasinan Village is one of the areas where clean water distribution is managed by Ngasinan Village Regional Drinking Water Company (PAMDes). There are still several problems, especially regarding the provision of clean water. Currently, the managed clean water network has not reached the entire Ngasinan Village area, with 30.18% still using wells and rain-fed wells. This has an impact when the dry season occurs, which decreases water discharge and causes water scarcity. Therefore, to improve the provision of clean water, Ngasinan village needs to build a comprehensive clean water network for the community. The method was used quantitatively with water demand forecasting analysis techniques and in planning a water network with Epanet 2.0. Based on the forecasting results for 2033, the need for water is 1.92 liters/second, with a standard water requirement of 60 l/day/capita. The average water requirement in 2033 is 2.77 liters/second, including domestic and non-domestic needs. The development plan of Ngasinan Village is to add one water source, namely the Temulus source, with an installed capacity of 7 l/s, which will serve 112 customers. The planned length of the water distribution pipe is 3123.60 meters with a 2-3 inch PVC pipe type, pipe speed in the range of 0.26-0.88 m/s, and pressure in the range of 51.13 - 58.92 m. This study contributes to the clean fulfillment efforts, especially in supporting the 100-0-100 program. Recommendations are given to village policymakers to optimize the existing clean water potential for better clean water services.
The Role Of Social Capital In Community Based Drinking Water Programs in Sranak Village, Bojonegoro Kukuh Nur Cahyo, Moh.; Rizal Sutikno, Fauzul; Rini Dwi Ari, Ismu
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.2024.015.02.8

Abstract

The ability of a community to manage water supply networks is significantly influenced by the type and extent of social capital, which helps to elucidate interaction patterns within water supply community groups. In 2018, Sranak Village in the Trucuk District became the first to implement the PAMSIMAS 7 Sumber program. This initiative involved community groups responsible for managing the program, with water network installations being independently distributed and maintained by the private sector. This research aims to assess the distribution of social capital and the level of community participation to enhance community-based water and sanitation management in Sranak Village. Utilizing Social Network Analysis (SNA), this study maps and examines the connections, networks, and information flows within the community. Data collection includes primary sources through direct observation and secondary sources from community water management groups. The findings reveal that Sranak Village possesses a robust social network and high levels of trust, which contribute to the effective management of water supply infrastructure. Moreover, social capital plays a crucial role in bridging gaps between community groups, thereby fostering development and sustainability. The study underscores the importance of social capital in community-based initiatives and suggests that enhancing these networks can lead to improved management and sustainability of water and sanitation systems.
Analysis of Land Cover Change Trends at Rejoso Watershed, Pasuruan Regency, East Java Province Nurrohma Amalia, Nadhea; Suhartanto , Ery; Andawayanti, Ussy
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.2024.015.02.3

Abstract

Human activities such as urbanization, population growth, agricultural expansion, deforestation, and industrialization significantly influence changes in land cover and the environment. The United Nations World Urbanization Prospects reports that by 2030, around 60% of the world’s population will live in cities, increasing from 54% in 2014 to 66% in 2050. This change in land cover can cause environmental disasters such as erosion and flooding, resulting in biodiversity loss, land degradation, and pollution. Therefore, monitoring land cover changes is a priority for researchers and policymakers. This research analyses land cover changes from 2012, 2017, and 2022, predicting 2027 and 2032. Landsat satellite image processing to create land cover maps for 2012, 2017, and 2022 uses a supervised classification method in GIS software and predicts land cover for 2027 and 2032. It was carried out with the help of TerrSet software with a CA-Markov model using spatial data on land cover maps for 2012, 2017, and 2022. The results of this process show that land cover of lakes, forests, plantations, and rice fields decreased in each period, while land cover of dry land, residential areas, bushes, and ponds experienced an increase. The result validation value in 2012 was 81.98%, in 2017, 76.83%, and in 2022, 79.57%, and validation in 2022 on Terrset of 0.7190.
Musle Model Development in Laboratory Studies Using a Rainfall Simulator Aulia Zahira, Nabila; Andawayanti, Ussy; Suhartanto, Ery; Ramadhani, Rizki
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.2024.015.02.5

Abstract

Various methods are available for sediment calculation, including the USLE and MUSLE methods, developed based on field observations. For the MUSLE method, it is important to determine the peak flow rate and surface runoff volume. This data is crucial for identifying areas vulnerable to erosion and implementing erosion prevention measures. However, in practice, calculations are often adjusted based on the available data and parameters. This research compares the calculated results of peak flow discharge and surface runoff volume between the Rational Method and the SCS Method with laboratory observations and the applicability of the USLE and MUSLE methods to laboratory sediment observations. Laboratory experiments use a rainfall simulator with intensities of 1 liter/minute, 1.5 liters/minute, and 2 liters/minute, and a maximum land slope of 5%. The research results show that calculating peak flow discharge and surface runoff volume using the Rational Method aligns more closely with laboratory conditions than the SCS Method. However, both methods are considered unsuitable for laboratory observations, as validation calculations and relative error results indicate a mismatch with model performance. Meanwhile, the USLE method is considered more suitable for sediment calculations than the MUSLE method, as the MUSLE method requires adjustment analysis to fit laboratory observations better.
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.

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