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FLOOD MANAGEMENT STRATEGY IN THE LANDAK SUB-RIVER BASIN USING SWOT ANALYSIS Alfaro, Aldi; Soeryamassoeka, SB; Gunarto, Danang; Umar, Umar; Yulianto, Eko
Jurnal Teknik Sipil Vol 23, No 1 (2023): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtst.v23i1.61790

Abstract

The Landak sub-River Basin is part of the Kapuas River Basin which is drained by the Landak River with an area of approximately 7,921 km2. Flooding in the Landak sub-River Basin occurs every year with the number of cases tending to increase. Flooding in the Landak sub-River Basin inundates about 20 villages, which means that flood-prone areas dominate. The causes of flooding in the Landak sub-River Basin are very complex, basically caused by natural and non-natural factors. Specifically, there are many problems in the Landak sub-River Basin that are thought to trigger flooding such as land use change, decreasing catchment areas, blockages in small rivers, and so on. To identify strategic issues regarding flooding in the Landak sub-River Basin, a Focus Group Discussion (FGD) was conducted which was attended by several resource persons who were credible with the subject matter and an AHP analysis was conducted first to determine the priority scale of flood management in the Landak sub-River Basin. The result of determining the priority scale of flood management in the Landak sub-River Basin is the strengthening and implementation of regulations. The resulting strategic issues were subjected to a questionnaire that was assessed by the respondents involved during the FGD. The results obtained from this series of SWOT analyses are the formulation of strategies that are most suitable for the strategic issues of flooding in the Landak sub-River Basin using QSPM analysis, along with the determination of short-term, medium-term and long-term strategies using SFAS analysis.
THE SEROK RIVER CATCHMENT FLOOD HYDROGRAPH Herlianda, Herlianda; Nurhayati, Nurhayati; Yulianto, Eko
Jurnal Teknik Sipil Vol 23, No 2 (2023): JURNAL TEKNIK SIPIL EDISI MEI 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtst.v23i2.62187

Abstract

Global climate change is expected to cause an increase in the intensity and duration of extreme rainfall events that occur today. The leading cause of flooding in various world regions, including flat coastal areas such as the Serok River catchment in Kota Pontianak, influenced by tides, is excessive rainfall. This article presents the results of an analysis of the impact of extreme precipitation on the peak discharge of flood hydrographs in the Serok River catchment, Kota Pontianak.Maximum daily rainfall data for 2009-2020 recorded at PTK-11 Pontianak Station were selected using the Annual Maximum Series Method. Frequency analysis was conducted using the best distribution method selected from Normal, Log Normal, Log Pearson Type III, and Gumbel Type I to obtain the design rainfall. The design rainfall was transformed into flood hydrographs at the next stage using the Snyder Synthetic Unit Hydrograph based on several return periods.The results of the analysis show that there are changes in flood discharge in the Serok River catchment area for each return period. The location of land use and the value of rain intensity significantly affect the calculation of plan discharge; the more significant the land area and the higher the rain intensity, the greater the resulting release. The most considerable flood discharge (Qmax) in the 2, 5, and 10 years return occurs at STA 1 + 100, w.290 m3/s, 0.347 m3/s, and 0.377 m3/s, respectively. Thus, this causes periodic flooding/inundation conditions, especially in areas that have low elevations.
ZONING OF FLOOD PRONE AREAS IN SINGKAWANG CITY DUE TO RAINFALL Razi, Fahrul; Soeryamassoeka, SB; Yulianto, Eko
Jurnal Teknik Sipil Vol 23, No 3 (2023): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v23i3.68178

Abstract

Singkawang City is a coastal and hilly city. Flooding incidents have caused considerable material damage, displacement of people, and loss of lives. Floods in Singkawang occur almost yearly. In general, the floods in Singkawang are caused by natural factors, exceptionally high rainfall. Considering the significant impact of floods on the development of Singkawang City, it is necessary to establish flood vulnerability zoning based on rainfall in the city.An analysis is conducted on parameters that influence flood incidents, including the slope of the land, elevation, soil type, land cover, and hydrological analysis of rainfall data to create a flood vulnerability zoning map in Singkawang City. Then, an overlay is performed on the four parameters that affect floods, resulting in a map showing the distribution of inundation due to the maximum planned flood discharge (Q) generated from the hydrological analysis based on rainfall.The flood vulnerability map analysis results based on 4 data parameters that affect flood events obtained that the flood-safe area in Singkawang City covers an area of 14863.97 ha (27.04%). In contrast, areas not prone to floods cover 24571.74 ha (44.70%). Areas vulnerable to floods cover 11476.22 ha (20.87%), and regions highly vulnerable to floods cover 3567.28 ha (6.49%). Based on the results of hydrological analysis based on rainfall, it is obtained that the area of Singkawang City mostly experiences inundation due to the maximum planned flood discharge occurring at a 2-year interval in the Small Semelagi River Zone (353.5 ha), at a 5-year gap in the Small Semelagi River Zone (327.4 hectares), at a 10-year gap in the Selakau River Zone (401.4 ha), at a 20-year interval in the Selakau River Zone (473.1 ha), at a 50-year interval in the Selakau River Zone (545.9 ha), and at a 100-year gap in the Selakau River Zone (617.7 ha).
INFLUENCE OF LAND USE CHANGE ON THE MAGNITUDE OF THE RUNOFF COEFFICIENT IN THE UPPER KAPUAS RIVER BASIN Goewin, Felix Wesley; Soeryamassoeka, Stefanus Barlian; Yulianto, Eko
Jurnal Teknik Sipil Vol 24, No 1 (2024): Vol 24, No 1 (2024): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i1.75238

Abstract

The increase in population in the upper Kapuas Hulu River Basin will also increase the need for land. This increase in land demand can cause land use changes, affecting the runoff coefficient. Based on the reasons above, research was conducted to determine the effect of changes in land use on the magnitude of the runoff coefficient in the upstream part of the Kapuas River Basin from 2012 to 2017 and 2017 to 2022.The runoff coefficient calculation uses the U.S. Forest Service, Hassing, Kodoatie, and Syarief methods. Each method uses different parameters to determine the results. Data processing is carried out using a Geographic Information System (GIS).The analysis and calculations show that the runoff coefficient values obtained in the Upper Kapuas River Basin using the U.S. Forest Service method in 2012, 2017, and 2022 are 0,133, 0,136, and 0,145. The Hassing method results are 0,308, 0,309, and 0,312, and the Kodoatie and Syarief method results are 0,156, 0,167, and 0,173. This value shows that the Upper Kapuas River Basin is in reasonably good condition because the runoff coefficient value is far below 1.
Development of a Simple Tray Aerator Physical Model to Improve Groundwater Quality in Bonti Village, Sanggau Regency Adlillah, Miftakhul; Umar, Umar; Yulianto, Eko
Jurnal Teknik Sipil Vol 25, No 3 (2025): Vol 25, No 3 (2025): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i3.90528

Abstract

The community of Bonti Village relies on groundwater as the primary source of clean water since the local Regional Drinking Water Company (PDAM) ceased operations. However, the quality of the groundwater often raises health concerns, particularly in cases of diarrhea during the dry season. This study aims to design and evaluate the performance of a simple tray aerator as an alternative technology for groundwater treatment to meet the quality standards set by the Regulation of the Minister of Health of the Republic of Indonesia No. 2 of 2023 on Mandatory Drinking Water Quality Parameters. The design consists of four tray levels and one storage container, with a spacing of 0,4 m between trays and a container height of 0,3 m. Each tray measures 0,42 m in length and 0,30 m in width, equipped with 88 holes of 0,005 m diameter and a spacing of 0,03 m between holes. The total hole area was recorded at 0,001727 m ², with a surface loading rate of 6,6665 m ²/m ³/s and a detention time of 1,16 seconds. The filtration media used include charcoal (2 cm), shell sand (2 cm), gravel (1,5 cm), and coconut fiber (1,5 cm). The groundwater quality tests from three bore wells indicated a significant reduction in metal concentrations and improvements in both physical and chemical parameters, with all parameters meeting the required quality standards. Therefore, the simple tray aerator is proven to be effective as an appropriate technology solution for the provision of clean water in rural areas.
Analysis of Water Availability of Madi Irrigation Network Pradanapa, Permada Garah; Soeryamassoeka, S. B.; Yulianto, Eko
Jurnal Teknik Sipil Vol 24, No 3 (2024): Vol 24, No 3 (2024): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i3.80389

Abstract

This research analyzes the water availability of the Madi Irrigation Network through detailed assessments of evapotranspiration and discharge data from 2008 to 2019. The study reveals significant seasonal and inter-annual variations in evapotranspiration rates, which typically increase during warmer months and decrease in cooler periods. This fluctuation is closely linked to climatic conditions, influencing agricultural water demand. Monthly discharge data further illustrates these variations, showing high discharge rates in the rainy season (e.g., January and December) and lower rates during drier periods (e.g., August and September). The 80% dependable discharge rates reflect similar seasonal trends, with notable peaks and troughs correlating with rainfall patterns. These insights underscore the importance of adaptive water management strategies to optimize irrigation practices, manage water resources effectively, and address the impacts of climate variability. By understanding these patterns, water managers can better plan for periods of surplus and scarcity, enhancing agricultural productivity and sustainability.Keywords: Water Availability, Irrigation Madi, Irrigation Management, Water Management, Agricultural Water Demand.
DETERMINATION OF REPRESENTATIVE MOCK MODEL PARAMETERS FOR MONTHLY DISCHARGE CURVE DEVELOPMENT IN THE UPPER KAPUAS RIVER BASIN Sutera, Mahardika Wira Aji Bayu; Soeryamassoeka, S. B.; Yulianto, Eko
Jurnal Teknik Sipil Vol 24, No 2 (2024): Vol 24, No 2 (2024): JURNAL TEKNIK SIPIL EDISI MEI 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i2.69008

Abstract

Representative Mock Model Parameters for Generating Monthly Discharge Curves in the Upper Kapuas River Basin provide valuable insights into hydrological processes influenced by climatic factors. Potential evapotranspiration peaks in August due to elevated temperatures and intensified sunshine during the 2005 dry season, leading to increased water demand from soil and vegetation. This results in heightened water loss to the atmosphere, reducing available water for river flow and decreasing monthly discharge, which is crucial during dry periods. Effective water resource management strategies are essential to mitigate potential water scarcity. High rainfall in the upstream Kapuas watershed significantly impacts monthly discharge, with increased surface flow directly boosting river discharge. The monthly discharge varies widely between rainy and dry seasons, notably rising during heavy rainfall, potentially causing flooding. Effective watershed management, including runoff management, reforestation, and infrastructure development, is critical to mitigate these impacts and optimize water resources for irrigation and supply, ensuring efficient utilization of increased rainfall. Correlation and RSR test results underscore the model's ability to capture variable relationships and predict outcomes accurately. Strong correlations between 0.8 to 1 and RSR values ranging from 0.5 to 0.7 demonstrate the model's reliability in various scenarios. Models with lower RSR values below 0.5 exhibit exceptional prediction accuracy, emphasizing their utility in diverse applications. These findings highlight the importance of refining models to enhance accuracy and reliability in predictive hydrological applications within the Upper Kapuas River Basin, ensuring adequate water resource management and flood risk mitigation.
GENERATION OF SYNTHETIC RAINFALL DATA IN SEKAYAM SUB-WATERSHED BASED ON TRMM SATELLITE RAINFALL DATA CORRECTION EQUATION Iwansyah, Iwansyah; Soeryamassoeka, SB.; Yulianto, Eko
Jurnal Teknik Sipil Vol 23, No 1 (2023): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtst.v23i1.61097

Abstract

The hydrological  analysis is the first stage of the review in waterworks planning. Hydrological analysis necessitates the availability of sufficient data. Data availability tends to have several problems, including a lack of availability, incomplete/empty data, a smaller number of stations, observers, and observation systems, data entry that is still manual, and slow data collection. One possible solution is to use rain satellites. However, TRMM data must be evaluated for field suitability. TRMM (Tropical Rainfall Measurement Mission) rainfall data can help overcome this. TRMM is a NASA mission that uses weather monitoring satellite technology to monitor tropical rainfall. This is also the case for the Sekayam Subwatershed, part of the Kapuas River Basin.In the Sekayam sub-watershed, there are 14 (fourteen) rainfall observation stations managed by the Balai Wilayah Sungai Kalimantan (BWSK) I, but currently only 5 observation stations are still active, namely the SGU-01 Sanggau, SGU-03 Balai Karangan, SGU-06 Entikong, SGU-19 Semuntai and SC-01 Kembayan observation stations with data recorded up to 2019, while the other 9 (nine) observation stations do not have long continuous data, because there are years where rainfall data is not recorded. This is because the recording of rainfall on average stopped until 2005, or even some have stopped operating since the 1990s or early 2000s. This study aims to generate representative synthetic TRMM daily rainfall amount data for the Sekayam sub-watershed based on the correction equations obtained in a series of TRMM rainfall data validation analyses, so that it can be used as alternative daily rainfall data in water resources planning and management in the Sekayam sub-watershed.  From the analysis, it can be seen that synthetic rainfall data in the Sekayam sub-watershed will be valid if it is generated with the linear model correction equation Y = 0.6708 X + 139.123 or can be interpreted as TRMM' = 0.6708 TRMM + 139.123.
MORPHOLOGY AND MORPHOMETRY CHARACTERISTIC OF RAYA WATERSHED Kurzah, Muhammad Yusril Ihza; Nurhayati, Nurhayati; Yulianto, Eko
Jurnal Teknik Sipil Vol 24, No 1 (2024): Vol 24, No 1 (2024): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i1.75707

Abstract

The study of watershed morphology and land use patterns significantly affects hydrological processes and runoff coefficients, highlighting the quantitative nature of watershed characteristics. The Raya Watershed in West Kalimantan influences local communities and aims to enhance understanding of its physical attributes and hydrological dynamics through detailed analysis of topography, soil composition, land use, and river networks. Findings inform watershed management and conservation strategies. The analysis of the Raya Watershed, spanning 29,982.96 hectares (87.34% of total area) with elevations below 100 meters, reveals flat terrain vulnerable to flooding, particularly in low-lying or sea-level regions, exacerbated by limited natural drainage. Lower elevations support crucial wetland and floodplain ecosystems. Hydrological disruptions from land use changes and climate fluctuations can harm biodiversity and water quality. Effective land use planning is vital to address flood risk and environmental concerns, mitigating impacts like property damage and population displacement. Soil-type mapping informs conservation efforts, ensuring ecosystem resilience. Sustainable land management practices, guided by watershed characteristics like drain density and stream frequency, are essential to mitigate biodiversity loss and ecological imbalances.
PERFORMANCE ANALYSIS OF THE PUBLIC COMPANY REGIONAL DRINKING WATER TIRTA KHATULISTIWA IN PONTIANAK CITY Alfira, Dhea; Soeryamassoeka, SB; Yulianto, Eko
Jurnal Teknik Sipil Vol 23, No 3 (2023): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v23i3.68169

Abstract

Pontianak City's only regional public water corporation is PERUMDAM Tirta Khatulistiwa. PERUMDAM must measure its SPAM management's success as the Drinking Water Supply System (SPAM) organizer. More is needed if solely financial metrics are used to quantify PERUMDAM's SPAM management success. The BPPSPAM team, BPKP, Perpamsi, and numerous PERUMDAMs developed this performance assessment based on four performance factors: financial, service, operational, and human resources. Each part has various assessment indications to improve assessment accuracy. The performance assessment results are Healthy, Less Healthy, and Sick. PERUMDAM must be healthy to operate SPAM effectively and efficiently through internal solid management to promote drinking water coverage and quality (BPPSPAM, 2014). The company's performance was assessed by PERUMDAM Tirta Khatulistiwa utilizing KEMENDAGRI Number 47 of 1999 metrics. This examination shows that low-value firm indicators still hinder performance.This article presents research on measuring the performance of PERUMDAM Tirta Khatulistiwa Kota Pontianak for the 2021 period through an assessment of the financial aspects, service aspects, operational aspects, and human resource aspects based on the Decree of the Head of the Supporting Agency for the Development of Drinking Water Supply Systems Number 002/KPTS/K-6/IV/2010 concerning Performance Assessment of Services for the Implementation of the Development of Drinking Water Supply Systems in Drinking Water Regional Companies using the Balance Scorecard approach and making the most suitable strategy for the lowest valued assessment indicator based on performance assessment in optimizing PERUMDAM Tirta Khatulistiwa's performance using SWOT analysis.Based on the study, PERUMDAM Tirta Khatulistiwa has a total score of 3.72 for all factors; this means it is a "healthy" PERUMDAM. After studying the best way to improve PERUMDAM Tirta Khatulistiwa, we found that its weaknesses should be fixed so that existing opportunities are used to their fullest. Another way to boost PERUMDAM's performance is to increase technological innovation by using more reliable technology and making apps that fit the needs of every part of PERUMDAM Tirta Khatulistiwa and improve customer service.
Co-Authors Achmad Buchori Adi Permana Adlillah, Miftakhul Aghnia Wulandari Aghus Sofwan Agustin, Yulia Ahmad Tafsir, Ahmad Ahmad Yusril Firdaus Alfaro, Aldi Alfira, Dhea Amanda, Jessi Amarulloh, Sandy Ihsan Andi Kurniawan Anggraeni, Putri Dwi Apiati, Vepi Apriliani, Leni Ardi, Ryan Dwi Wahyu Ardiansyah, Novi Arinah Fransori Arsita, Deby Aswan Aswan Azwa Nirmala Bachti, Achmad Syauqi Bambang Sumadyo Budi Satria Panandita Burhan, Asmat Chadis Chadis Cucu Arumsari, Cucu Dedi Muhtadi, Dedi Devi Marlita, Devi Dewi, Dea Ravika Dewi, Sinta Verawati Dwi Novitasari Elvira Elvira Fadila, Dhita Nur Fahrul Razi Fakhrully, Ya' Dhally Fandrias Anggoro Wicaksono Fauzi, Rival Muhamad Firdaus, Ahmad Yusril Firmansyah, Andy Galingging, Elvita Sabat Uly Vera Goewin, Felix Wesley Gunarto, Danang Handayani , Arri Hanif, Ahmad Royan Helena Juliarti Herawati, Henny Herlianda, Herlianda Hesti Istiqlaliyah Hetty Patmawati Hilda Hilaliyah Ibrahim Ibrahim Ida Dwijayanti Ira Mayasari Mayasari Irwan Siagian Ismiyanti, Dinda Isnaini, Naomy Lutfiah Iswara, Mirandi Aldino Iwansyah, Iwansyah Joko Sulianto . . Kartini Kartini Kartini Kartini Kartini, Kartini Kartini Kharimah, Nurul Ikhsan Kurnia Kurniawan, Dian Kurzah, Muhammad Yusril Ihza Laksono Trisnantoro Mansyur, M. Zulfikar Mansyur, Muhamad Zulfikar Mansyur, Muhammad Zulfikar Marantias, Donny Septian Maryunani, Khoiril Anwar Maulana, Muhammad Azril Rizky Mega Nur Prabawati, Mega Nur Meliana, Elma Mesio, Marsianus Muhamad Basori, Muhamad Mulyani, Eva Muqaibal, Abdullah Aqeel Nafilah, Ila Nafira, Mutia Azmy Nathaniel, Yose Gerard Nina Kartika, Nina Nur Irwansyah Nur Prabawati, Mega Nur Salsabila Nurhaliza, Erisa Nurhayati Nurhayati Nurhayati, Elis Nurhidayah, Efrilia Mahdilah Nuriah, Eva Nurihsan, Achmad Juntika Nurjamil, Dedi Paraya, Mario Igor Permana, Adi Plasnajaya, Rizki Pradanapa, Permada Garah Prananda, Yhogi Pratama, Andikha Pratama, Rifki Purna Sulastya Putra, Purna Sulastya Puspitawati, Resti Sri Rezeki Putri, Rizqy Amelia Rahma Insani, Fitri Amalia Rakhmawati , Dini Ramadhan, Ade Ramdayana, Ira Pratiwi Redi Hermanto Reni Rokhayati Ria Permata Sari Risky, Muhammad Risqi Aulia Risqi Aulia Sakinah, Rosalinda Sari, Retna Satria Yudhia Wijaya Septiana, Siska Septriono Hari Nugroho Setia, Gilang Setialesmana, Depi SETYA WAHYUNINGSIH, SETYA Shopia, Siti Apriliani Sibuea, Cristin Liony Cindy Siti Apria Ningsih Sri Sukapti, Woro Sri Tirto Madawistama Stefanus Barlian Soeryamassoeka Subastian, Djamal Sufyani Prabawanto, Sufyani Sugara, Gina Sugiana SUHARSONO Sukirwan Sukirwan Sulastiono, Pudjo Sulis Setiawati Sulistijani, Endang Sumarno , Sumarno Sumarno . Sumarti Susanti, Mia Aprilia Sutera, Mahardika Wira Aji Bayu Syamsul Hadi Syaparudin, Muhammad Syarifudin Yunus Teguh Prasetio Thibyan, Mohamad Toto Subroto udin, sabarudin UMAN SUHERMAN, UMAN Umar Umar Virawanti, Tiana Wahyudin Wahyudin Wibowo, Prasetyo Ari Wicaksono, Bimo Windarta, Jaka Woro Sri Sukapti, Woro Sri Yana Tatiana, Yana Yayan Sudrajat Yoke Lestyowati Yusi Riksa Yustiana, Yusi Riksa Yusuf Iskandar Zaenal Abidin Zulfikar Mansyur, Muhammad