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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.
Arjuna Subject : -
Articles 384 Documents
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Analysis of Clean Water Availability in Batas Hamlet and Tol-tol Hamlet, Pringgondani Village, Sumberjambe District Tatrisya Derka, Icha; Amiluddin, Afif; Faradella, Maulida; Katminto, Katminto; Hanurani, Devi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 17 No. 1 (2026)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2026.017.01.8

Abstract

Flash floods in Pringgondani Village have caused significant damage to infrastructure, including disruptions to the clean water supply, thereby affecting environmental, economic, and social conditions. Limited access to safe water poses serious public health risks; therefore, mitigation efforts are essential to enhance the resilience of the water supply system. This study aims to project water demand over the next ten years and to determine the required reservoir storage capacity. A quantitative descriptive approach with community participation was employed, incorporating water demand projections based on population growth and rainfall analysis using a simple runoff method to estimate water availability. The results indicate that the projected water demand over the next ten years will reach 854,012.1 L/day for a population of 7,189 inhabitants. The analysis also shows that the required storage volume for Batas and Tol-tol hamlets is 9.96 m³, while the total reservoir capacity required for Pringgondani Village is approximately 79.75 m³. To ensure an adequate and reliable water supply, the required storage can be achieved by constructing three reservoirs, each measuring 3 m × 3 m × 3 m, providing a total storage capacity of 81 m³, which is sufficient to meet the projected demand. Currently, only two reservoirs with a total capacity of 54 m³ are available, which is insufficient for future demand. Therefore, one additional reservoir supported by a larger-capacity water source is recommended to improve system reliability, meet future demand, reduce the impacts of dry seasons, and provide backup capacity during emergencies such as flash floods.
Discharge Availability Analysis of the Manikin Dam Using the F. J. Mock and NRECA Methods A. H. Welkis, Wilberd; Krisnayanti, Denik Sri; Robson Klau, Ralno; Nait, Costandji; F. B. Welkis, Davianto; Doa Megonondo, Batara
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 17 No. 1 (2026)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2026.017.01.9

Abstract

East Nusa Tenggara is a semi-arid region with a relatively short rainy season and low annual rainfall of 1,250 mm/year. To address this condition, technical engineering measures are required, including the construction of water storage infrastructure, such as the Manikin Dam. Manikin Dam is located between Kuaklalo Village and Bokong Village, Taebenu District. This study aims to determine potential evapotranspiration using the Modified Penman Method and dependable discharge using two methods: the NRECA Method and the F.J. Mock Method. From these two methods, the one that best represents the characteristics of the Manikin watershed was selected. The results showed that the maximum half-monthly potential evapotranspiration in the Manikin watershed, calculated using the Modified Penman Method, is 97.7 mm, and the minimum is 44.2 mm. The average annual reliable discharge with the NRECA Method is 2.09 m3/s. The annual dependable discharge with the F. J. Mock Method is 1.35 m3/s. Of the two methods used, the NRECA Method is closest to the characteristics of the Manikin watershed, with an RMSE of 0.85. The filling time of Manikin Reservoir under normal water-years conditions is three months, from the first part (I) in December to the second part (II) in February. The time required to fill Manikin Reservoir for low-water-years conditions is three months, from the first part (I) of December to the first part (I) of March.  
Calibration of Water Distribution Unit in Subak Irrigation System Gusti Ngurah Hesa Respati, I; Nurrochmad, Fatchan; Prima Ari Pratiwi, Endita
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 17 No. 1 (2026)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2026.017.01.7

Abstract

The Subak system has an irrigation water distribution unit known as tektek and an intake structure called Tembuku Penyahcah. The adjustment of the number of tektek in Subak Pulagan to ensure equitable water utilization within the subak is still based on estimations by the Pekaseh (Subak leader). Therefore, it is necessary to analyze the actual water distribution in the observed plots. This study aims to formulate an equation using the broad-crested weir approach for the Tembuku Penyahcah intake structure and to validate the resulting calculations. The study was conducted during the second rice planting season of 2021, from August to December, on an observation plot covering 7.70 hectares. The research stages included obtaining measured discharge data from water-level observations and flow rate measurements and performing regression analysis using the power equation. Calibration analysis was performed by comparing the discharge equation of the broad-crested weir with the measured discharge using the power equation. The exponent of the water depth (h) was adjusted to match the exponent in the broad-crested weir equation. Validation of various discharge equations against the measured discharge was conducted using correlation coefficient, RMSE, relative RMSE, MAE, and relative MAE methods. The results indicate that the calibrated discharge coefficients for the Tembuku Penyahcah intake structures A, B, C, and D are 0.500, 0.410, 0.710, and 5.233, respectively. The validation results show that the calibrated discharge curve equation effectively reduces error compared to the theoretical broad-crested weir discharge curve.
Seasonal Assessment of Musi River Water Quality in Palembang Using STORET and PI Faizaturrohmah, Nur; Sukmawardana, M. Iqbal; Noor Azizah, Rifka; Isoralla, Isoralla; Awfa, Dion; Rohman, Arif; Ulin Nuha, Muhammad; Try Atmojo, Aulia; Adli Naufal Purnomo, Daffa
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 17 No. 1 (2026)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2026.017.01.10

Abstract

This study aims to determine the water quality status of the Musi River in Palembang City in the dry season (July) and the rainy season (October) using the STORET and Pollution Index (PI) methods, as a scientific basis for evaluating seasonal pollution dynamics and supporting sustainable river management. Water samples were collected from four representative sampling sites along the Musi River in Palembang City, representing the upstream reach, industrial zone, urban reach, and downstream section. Primary data were obtained from field measurements of physical and chemical parameters, while secondary data were obtained from water quality standards and related literature. Water quality determination using the STORET method was based on deviations from regulatory standards, while the PI method estimated the average pollution load. The results show that several parameters exceed the allowed limits, with the STORET method generally classifying the river as moderately polluted, whereas the PI method classifies it as lightly polluted. This study evaluated the water quality of the Musi River in Palembang City using the STORET method and the Pollution Index at four sampling locations in the dry and rainy seasons. The STORET analysis showed that four points fell into the moderately polluted category (score: -12 to -20), while the PI method showed lightly polluted throughout the area (Pij score: 2.29 to 3.07). The results underscore the urgent need for integrated pollution management to ensure regulatory compliance and protect ecosystems.

Page 39 of 39 | Total Record : 384

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