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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 8 Documents
 1 
Search results for , issue "Vol. 14 No. 1 (2023)" : 8 Documents clear
Tsunami Disaster Risk Assessment Using a Geographic Information System for Puger Sub-District, Jember Regency Suparno Suparno; Retno Utami Agung Wiyono; Entin Hidayah; Wei Koon Lee
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 1 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.01.2

Abstract

The southern region of East Java is located on the Indo-Australian plate. The shifting of these plates allows for earthquakes that trigger tsunamis to occur. The earthquake leads to the impact of a tsunami in several areas, one of which is Puger Sub-District, Jember Regency. The main economic activity of the Puger Sub-District is the fishery; hence significant local coastal communities are vulnerable to tsunami threats. This study aims to map the tsunami risk using a Geographic Information System. The tsunami hazard map used the analysis of the tsunami inundation map from the BMKG. Vulnerability and capacity maps were prepared based on BNPB Chief Regulations. Vulnerability is evaluated based on social, physical, environmental, and economic data. Capacity considers components of the institution, early warning and risk analysis or evaluation, disaster awareness education, reduction of basic risk, and preparedness. The hazard, vulnerability, and capacity maps are classified into five classes. The tsunami risk map is then derived by overlaying the three input maps. Results showed that the villages with very high risk are Puger Kulon and Mojosari at the coastal front areas, covering an area of 13.01% of the total regional area of the Puger Sub-District.
Water Footprint Analysis of Paddy Cultivation by Subsurface Irrigation in a Greenhouse I Gede Pande Mahardika Pande; Chusnul Arif
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 1 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.01.1

Abstract

Water is one of the main elements that rice plants require to grow and develop. The problem related to agricultural land is the shift in the function of agricultural land to become non-agricultural land due to competition in water usage. The water footprint approach can assess the amount of water required for production or yields. This study aims to analyze the water footprint value of rice cultivation with various treatments of irrigations. The research was conducted at the Kinjiro Farm Greenhouse, Gunung Batu, Bogor, West Java from March to July 2022. There were three treatments of irrigation systems based on water level, flooded irrigation (IT) with the water level above the soil surface, wet irrigation (IB) with the water level parallel to the soil surface, and dry irrigation (IK) with the water level below the soil surface. The total water footprint obtained for all treatments during rice cultivation activities was 9.73 m3/kg. The water footprint values ​​of IT, IB, and IK were 1.92 m3/kg, 1.66 m3/kg, and 6.14 m3/kg, respectively. IB had the largest water productivity of  0.60 kg/m3. Wet irrigation (IB) had the highest growth of rice plants based on the parameters of average growth of rice plant height, number of leaves, rice tillers, productive tillers, and rice panicles. Therefore, wet irrigation (IB) is the most optimal irrigation system for rice cultivation in a greenhouse.
Risk Mapping of Tsunami Ambulu Sub-District, Jember Regency Adden Ramadhan Syarif Ardi; Gusfan Halik; Retno Utami Agung wiyono
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 1 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.01.8

Abstract

Tsunami risk level mapping was carried out in Ambulu Sub-District, Jember Regency, to determine the tsunami risk level in the area. Tsunami risk mapping was carried out by including several components such as vulnerability, which consists of several assessment aspects by the Chief of the National Disaster Management Agency Regulation of the Year 2012, and capacity, which is weighted according to the Chief of the National Disaster Management Agency Regulation of the Year 2012. The hazard component was generated from the bathtub method. The tsunami risk level was obtained after overlaying using a GIS application (Geographic Information System). A very high level of risk is found to apply for Sumberejo Village, with an area of 286 Ha, and Sabrang Village, with an area of 288 Ha. Villages at very high risk are directly adjacent to the coast and have high vulnerability and low disaster management capacity. The other villages, such as Karanganyar Village, Ambulu Village, Tegalsari Village, Andongsari Village, and Pontang Village, do not have a very high tsunami risk because they are far from the coastline and have low vulnerability and high disaster response capacity.
Assessment of Drought Disasters (EDI) Based on ENSO and NOAA Climate Data Using ANN in Bondowoso Regency Evid Zulhaqi; Gusfan Halik; Retno Utami Agung Wiyono
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 1 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.01.3

Abstract

Bondowoso Regency is declared to be at high risk for the threat of drought based on the IRBI map of the National Disaster Management Agency in 2020. This study aims to assess drought disasters based on ENSO and NOAA data. The proposed method for rainfall modeling was Statistical Downscaling (SD) using the Backpropagation Neural Network (BPNN), for which the output models were used for drought assessment using the EDI. The reliability test of the rainfall model is to compare the rainfall model with the observed rainfall. The reliability test of the EDI is to compare the results of the EDI analysis from the input rain model data with the observed rainfall data. ANN modeling results showed that monthly rainfall predictions are better. This is indicated by the R2 monthly, and 10-day base values of 0.97 and 0.83, respectively, with RMSE values of 0.05 and 0.07, and the best modeling in EDI analysis was R2 0.88 and 0.63 with RMSE 0.35 and 0.65. Based on the results of this study, it is shown that drought disaster assessment based on ENSO and NOAA climate data can be used as an alternative to support the decision-making system for drought mitigation.
Mapping of Design Rainfall at Multiple Return Periods Using Spatial Interpolation in Abab Sub-Watershed, Blitar Regency Ageng Galih Fans Muhammad Fiqri; Donny Harisuseno; Jadfan Sidqi Fidari
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 1 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.01.4

Abstract

The main occupation of residents who live in Abab Sub-Watershed, Blitar Regency, is as farmers in agriculture and plantations. Agriculture and plantations need rain data that have been calculated to maximize the yields to be obtained. Hydrometeorological disasters, specifically floods, often occur at this location. Therefore, research is needed on calculating design rainfall, outlined in easy-to-understand isohyet maps. The research aims to assist the planning of water structures or other hydrological research without having to recalculate or retest data from the beginning. This study's utilized return periods were 2, 5, 10, and 25 years, plotted as isohyet maps. Before calculating the design rainfall, the rainfall data had to be tested first. Calculation of design rainfall used SMADA Distrib 2.13 application and was tested with the distribution suitability test. The results of the distribution suitability test showed that Log Normal is appropriate to be used. The results of plotting the design rainfall on an isohyet map using the IDW, Kriging, and Spline methods showed that the IDW and Spline maps are smoother and not as broken as Kriging. Next, a comparative analysis of RMSE and NSE was carried out. For return periods of 2, 5, 10, and 25 years, IDW has the smallest RMSE mean value of 0.016 and the highest NSE average value of 0.9999.
Study of Determining Water Quality Status and Water Distribution Using Five Methods in Selorejo Reservoir. Mochamad Fikri Dwi Putra; Rini Wahyu Sayekti; Moh. Sholichin
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 1 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.01.5

Abstract

A reservoir is a place to store river water formed by the construction of a dam. The main problem of reduced water quality for Selorejo Reservoir is caused by the inflow of water from livestock, agricultural, and household wastes containing high amounts of nitrates and phosphates. The objective of this study is to determine the water quality status of Selorejo Reservoir using the DOE-WQI, Pollution Index, DWQI, Ved Prakash Index, and Prati Index methods; to find out the distribution of characteristics for water quality status using the IDW method and to find out the capacity of water pollution load for Selorejo Reservoir using Total-P. The research showed that the characteristics of water contamination for Selorejo Reservoir in 6 years indicate light pollution. Through the DWQI method, the contamination percentage became smaller downstream, while the DOE-WQI, Pollution Index, Ved Prakash Index, and Prati Index methods showed the opposite results. Total-P levels in the 2021 dry season were 42.475 mg/m3 (upstream), 35.767 mg/m3 (middle), and 37.567 mg/m3 (downstream). The pollution load capacity is 71.77 mg/m3 (upstream), 80.14 mg/m3 (middle), and 77.9 mg/m3 (downstream). It can thus be said that Selorejo Reservoir is still within the maximum reservoir pollution load limit.
Water quality and distribution of Selorejo Reservoir using the Pollution Index, Oregon-WQI, and NSF-WQI methods Ken Diah Mangar Nastiti; Rini Wahyu Sayekti; Emma Yuliani
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 1 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.01.6

Abstract

Selorejo Reservoir is used for flood control activities, hydropower, agricultural irrigation, fisheries, and tourism. In 2021, the water quality of Selorejo Reservoir worsened, which was indicated by fish mortality and an increase of water lettuce plants; the decline in water quality of Selorejo Reservoir may be due to agricultural and farming waste that was carried by surface runoff and entered the reservoir. This study was conducted to determine the status of water quality in Selorejo Reservoir using the Pollution Index, Oregon-WQI, CCME-WQI, and NFS-WQI methods in the dry season based on the parameters of pH, BOD, COD, DO, TSS, Nitrates, Ammonia, Phosphate, and fecal coliform. Based on the Pollution Index method, the water quality was in the "Slightly Polluted" condition. The Oregon-WQI method indicated the "Severely Polluted" condition. The CCME-WQI method indicated the "Good" condition. The NSF-WQI method indicated the "Fair" condition. The trophic status of Selorejo Reservoir was found to be eutrophic, with high levels of phosphorus. Calculation of the pollution carrying capacity based on the Total-P of the dry season in 2021 showed that the upstream, middle, and downstream parts of the reservoir are respectively able to accommodate 71.77 mg/m3, 80.14 mg/m3, and 77.90 mg/m3.
The Effect of Damage to Irrigation Assets on The Management of The Irrigation Network in The Weliman Irrigation Area, Malaka Regency-NTT Andryanus Bere; Donny Harisuseno; Tri Budi Prayogo
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 1 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.01.7

Abstract

Malaka Regency as an agricultural area does not yet have good irrigation asset maintenance management as a supporter of success in the agricultural sector. The obstacle faced in dealing with damage to irrigation assets is the difficulty in determining maintenance priorities due to the government's limited budget. It causes maintenance activities to be carried out in the stage. This study aimed to assess the physical condition of assets, asset functioning, service areas, maintenance costs, and maintenance priorities. The handling solution is carried out by developing a strategy for developing the Weliman irrigation area using a SWOT analysis. In the research results, the irrigation assets prioritized for maintenance are right secondary channel 1, left primary channel 5, distribution structure 3, left primary channel 3, left primary channel 4, distribution structure 4, primary channel left 2, and distribution structure 2. The results of the SWOT analysis, the recommended strategy is the Growth strategy, namely, maximizing the strengths owned to take advantage of existing opportunities.

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