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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. 16 No. 2 (2025)" : 10 Documents clear
Residential Drainage System Planning X Sidoarjo District Maulana, Akmal Dzikri; Setyowati, Rr Diah Nugraheni; Utama, Teguh Taruna
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.02.10

Abstract

An increase in the population growth rate leads to a rise in the need for housing. Housing development can reduce water catchment areas, potentially leading to increased flooding. This drainage system planning aims to determine the flood discharge and channel capacity. The hydrological analysis employs the Gumbel distribution method to determine rainfall with return periods of 5 and 2 years. Rainfall for the 2- and 5-year return periods is equal to 109.5 mm/hr and 136.8 mm/hr. Furthermore, the hydraulic analysis for channel drainage capacity uses the continuity equation and SWMM 5.2 modeling. The results of the hydraulic analysis showed that the channel capacity can accommodate the flood discharge. This is reinforced by the modeling results, which state that the whole conduit and junction can accommodate the flood discharge. This is based on the simulation results of channel conduits that are not red. The channel conduit is marked with green, blue, and yellow markings. This indicates that the planned channel has complied with planning rules. Based on the results of research and planning of the residential drainage system in X Sidoarjo Regency, it can be concluded that the drainage channel plan’s capacity is sufficient to accommodate flood discharge. This is based on mathematical calculation results and modeling simulation results from the SWMM (Storm Water Management Model).
Determination of Rainfall Thresholds as Flood Triggers in the Klopogowok Watershed, Jember Qatrinnada, Winona Fritzie Putri; Hidayah, Entin; Halik, Gusfan
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.02.1

Abstract

The Klopogowok Watershed in Bangsalsari District, Jember Regency, often experiences flooding, which disrupts community activities and causes quite severe traffic congestion. This study aims to determine the rainfall threshold that triggers flooding using empirical methods to provide early warning and more effective mitigation measures. The data used in this study include rainfall data from the Global Precipitation Measurement (GPM) satellite and local observation data from 2014 to 2023. The approach used is consistency and correlation analysis between satellite and observation data. The analysis results show that flooding in the Klopogowok Watershed occurs with rainfall intensity ranging from 45 to 145 mm, lasting 6 to 19 hours. The empirical model obtained is I = 17.727D0.4858. This model has been proven to predict flood events, with the intensity-duration (I–D) equation able to identify the rainfall threshold that causes flooding quite well, with a coefficient of determination (R2) value of 0.732. Model validation using flood event data shows that this model can be used to provide early warning of potential flooding as a preventive measure. With integration into a real-time weather monitoring system, this model can be used as a basis for early warning of flooding in the Klopogowok Watershed. These findings will help policymakers in disaster mitigation, more effective water management planning, and improve community preparedness for flood disasters.
Review of Gelar Reservoir Operation Simulation in Jembrana Regency Nuraga, I Ketut; Putri , Putu Indah Dianti
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.02.3

Abstract

As one of the most vital natural resources, water resources must be utilized and handled carefully and comprehensively. Water utilization for irrigation and drinking water is one of the various alternative uses of water in a river basin. In the East Tukad Daya river area, Jembrana Regency, a preliminary study has been carried out regarding plans to build a reservoir or dam to meet the irrigation water needs of 1,198 hectares and drinking water for the community in Melaya District and parts of Kota Negara. This research aims to simulate reservoir operations to ensure the reliability of storage operations in meeting existing water needs. The analytical method used is a simulation method based on the water balance formulation in the reservoir. The reservoir storage simulation results showed that the total storage capacity was 1,350.514 x 103 m3 at an overflow lighthouse height of + 180.0 m. The dead storage due to sedimentation is 12.817 x 103 m3, so the height of water withdrawal at the low water level (LWL) is set at an elevation of + 158.71 m. Based on the total area of storage and dead storage, the effective storage is 1,337.697 x 103 m3. This research provides an overview of the operating patterns that can be used as a reference for discharge release operations according to the service area’s needs.
Flood Identification Using Google Earth Engine and Correlation with Disaster Risk Level in Tanjungpinang City Dewi, Dian Kharisma; Zulfakar, Muhamad; Sukmawan, Muhammad Fatwa; Oktavia, Ferly
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.02.4

Abstract

Tanjung Pinang, the capital city of Kepulauan Riau Province, experienced a significant flood in early January 2021. The rainfall intensity during this event reached approximately 282.6 mm/hour, the highest recorded since 2011. This flood caused extensive damage to several facilities and residential areas. The impact of such disasters can be mitigated through identification, evaluation, and preventive measures. One such preventive approach is flood identification, which involves mapping flood extent areas. This study utilized Google Earth Engine (GEE), a web-based application platform, to achieve this. The advanced capabilities of GEE enabled the identification of flood distribution in January 2021. The results revealed that the cumulative flood distribution area was 37.89 hectares on January 2 and 149.88 hectares on January 10, with the largest affected area in Tanjungpinang Timur, covering 89.858 hectares. Based on the disaster risk level guidelines outlined in Regulation Number 02/2012, issued by BNPB, the floods on January 2 and 10, 2021, were classified as ‘High-Level’ disasters.  
The Effect of Groundsills on the Degradation and Aggradation Processes of the Parit Raya Riverbed Andriantari, Nur Fadhlillah; Andawayanti, Ussy; Hendrawan, Andre Primantyo; Putra, Farhan Akbar Darma
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.02.8

Abstract

Parit Raya is part of the drainage system of the Ngasinan River in Trenggalek and Tulungagung regencies. It is designed to reduce flooding and manage waterlogging caused by the construction. However, in the rainy season, the high flow velocity often causes damage to groundsills, triggering riverbed degradation or aggradation. This study aims to analyze the degradation and aggradation phenomena in Parit Raya River and the effect of two groundsill to reduce these actions using Hydrologic Engineering Center’s River Analysis System (HEC-RAS) simulations. The flow and sediment dynamics analysis uses Meyer Peter Müller (MPM), Engelund Hansen, and Laursen Copeland methods. The research locations focus on three river sections, consisting of 74 cross-sections, with two groundsills. By using the MPM, Englund-Hansen, and Laursen-Copeland methods modeled in HEC-RAS 6.0.0 software, this study can help in evaluating the effectiveness of groundsills in controlling sediment, preventing excessive erosion, and maintaining the stability of other hydraulic structures in rivers. The analysis reveals that conditions upstream of the groundsill tend to experience aggradation due to sediment deposition in STA 120, STA 103.60, and STA. 79.40, downstream conditions are characterized by degradation, indicated by riverbed erosion resulting from increased flow velocity between STA 120 and STA 47. Among the methods applied, the MPM and Engelund-Hansen methods provided results that closely align with field conditions compared to the Laursen-Copeland method.
Performance Evaluation of the GPM Satellite Rainfall in the Wampu Basin, North Sumatera, Indonesia Hakim, Anita Maulidiyah Rahma; Harisuseno, Donny; Sisinggih, Dian; Asmaranto, Runi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.02.7

Abstract

Rainfall data is crucial in water resources management, particularly associated with its quantity, quality, and spatial and temporal availability in a basin. This study aims to assess the feasibility of Global Precipitation Measurement (GPM) satellite rainfall data to represent rainfall in the Wampu basin. The observed and the GPM rainfall data were collected for 2001 – 2022. Rainfall data from observations and satellites are classified into seven rainfall depth classes with an interval of 10 mm for each class. The GPM was calibrated by determining each class’s correction factor (CF). Calibration is carried out by adjusting the CF value until the difference between the probability of occurrence of satellite and observation data for 2001 – 2017 shows a minimum value. The accuracy of the yielded CF was then validated by evaluating the estimated rainfall from the GPM with the observed rainfall for 2018 – 2022. The results show that the CF of GPM varies from 0.9 – 1.012 for rainfall intervals 0 – 10 mm, 10 – 20 mm, 20 – 40 mm, 40 – 50 mm, 50 – 100 mm, 100 – 110 mm, and >110 mm, respectively. Then, the validation results show an “Excellent” level of accuracy between the corrected GPM and the observed data.   
Numerical Model of Wave Transmission on Curtain-Wall Pile Breakwater with DualSPHysics Tahalele, Marcio; Khaldirian, Muhammad Farizqi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.02.2

Abstract

One of the problems often encountered in coastal areas is changes in coastal morphology caused by wave propagation. Curtain Wall-Pile Breakwater (CPB) is a practical alternative to dampen waves heading towards the shore. This study investigates the wave transmission caused by CPB using the Smoothed Particle Hydrodynamics (SPH) method and compares the experimental results with SPH. SPH was employed using open-source Computational Fluid Dynamics (CFD) software based on the DualSPHysics code. The numerical model (SPH) was made to resemble the experiment. The study was based on the effect of wave period (T) and the ratio between the submerged depth of the wave retaining wall and the water depth (h/d) of the CPB. The results show that CPB is effective in reducing incident waves. The effectiveness is seen from the resulting Transmission Coefficient (Kt) value. The baseline model Kt value is 0.854, and the Kt value with CPB is 0.693. The research findings show that the wave period (T) dramatically affects the wave transmission caused by CPB. The resulting Kt value decreases with increasing wave steepness (Hi/L), increasing incident wave height (Hi), and wave period (T). In addition, the increase in h/d also affects the Kt value, i.e., the resulting Kt value gets smaller. This study concludes that CPB can reduce the incident wave, thereby reducing the impact of waves on the protected side. Therefore, in designing a breakwater, it is necessary to consider the wave period (T) and the permeability level of the breakwater (h/d variation).
2D Modeling for Structural Flood Mitigation and Normalization with HEC-RAS: A Case Study of Tabelo River Agastya, Dewandha Mas; Kusuma, Rr. Widyawati Tresna; Jayanegara, I Dewa Gede; Yasa, I Wayan; Sulistiyono, Heri
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.02.9

Abstract

Changes in land use for the development of the Mandalika Special Economic Zone (SEZ) have led to increased flooding. A rainfall intensity of 35 mm recorded at the ARR KEK Mandalika station led to a flood event, with a water level reaching 1.2 meters on March 23, 2022. Therefore, a study is needed to determine the flood discharge that affects the Tabelo Watershed and to identify the appropriate structural mitigation measures for flood management. After conducting frequency analysis with Hydrognomon and Generalized Extreme Value (GEV), the flood discharge for the 50, 100, and 200-year return periods was 149.5 m3/s, 162.5 m3/s, and 175.2 m3/s. Structural mitigation by river normalization and levees construction on the Tabelo River was carried out along 1882.5 m at stationing P0 – P101 and 468.5 m at stationing S0 – S30. The levee construction is planned to be 14 m wide for the upstream section, up to the junction, and 16 m wide for the junction to the river mouth. The river levee is designed to be 3.30 meters high and 16 meters wide. The stability of the levee is calculated by considering its stability against overturning, sliding, and reactions from the foundation soil under both normal and seismic conditions. Based on the results of the stability calculations, the safety factor values for stability against shear forces under normal and earthquake conditions were obtained, namely, Fs (3.81 > 2.00) and Fs (1.27 > 1.25).
Analysis of Sengkarang Watershed Performance with the Addition of River Maintenance Flow Parameters Sodikin, Wahlul; Juwono, Pitojo Tri; Sholichin, Moh
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.02.6

Abstract

Watershed management plays a crucial role in maintaining water balance and ecosystem sustainability. However, conventional watershed performance assessments often overlook the importance of river maintenance discharge. This study evaluates the hydrological performance of the Sengkarang Watershed by incorporating river maintenance discharge as an additional parameter. The research employs the Tennant method to determine the maintenance flow and the Analytic Network Process (ANP) to weigh its significance. Six expert respondents participated in the weighting process. The study compares the results of the conventional five-parameter assessment with the newly modified six-parameter approach. Findings reveal that the Sengkarang Watershed is concerning, with high fluctuations in flow regimes and annual runoff coefficients. Including river maintenance discharge significantly increases the weight of flood parameters from 2.0% to 4.7%, while the new index for river maintenance discharge contributes 1.8% to the overall assessment. Despite these changes, the watershed remains classified as “Poor,” highlighting the need for further restoration efforts. The study suggests that integrating river maintenance discharge into performance assessments provides a more comprehensive understanding of watershed conditions, supporting better policy formulation for sustainable water resource management.
Comparative Analysis of Rainfall Patterns in Jatigede Watershed Using the Huff Method Setiyowati, Yunita Ayu; Harisuseno, Donny; Sajali, M. Amar
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 16 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2025.016.02.5

Abstract

The temporal distribution of rainfall plays a vital role in hydrological analysis, particularly in estimating peak flood discharge, which significantly impacts the design of flood control infrastructure. Understanding rainfall distribution patterns is essential for improving flood forecasting and water resource management. This study aims to compare the rainfall distribution patterns in the Jatigede Watershed (DAS Jatigede) using the Huff Quartile 1 to 4 method. Hourly rainfall data were collected from six rainfall stations: Bayongbong, Cikajang, Darmaraja, Jatigede, Leuwigintung, and Sadawangi, with Ground Station data used for validation. The analysis revealed that rainfall in the Jatigede Watershed is steeper than Huff Quartile 1, with peak intensity occurring earlier during events, indicating a high concentration of rainfall at the beginning of storms, which may affect flood peak formation and watershed response time. These findings underscore the need to adjust hydrological models to better reflect actual rainfall distribution. However, the study has limitations, including a relatively small number of observation stations, potential inaccuracies in rainfall measurements, and the Huff method’s limited ability to capture spatial rainfall variability. Addressing these limitations in future research is essential for enhancing flood risk assessment and hydrological modeling accuracy in the Jatigede Watershed.

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