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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur Jurnal Spektran Jurnal Pembangunan Wilayah dan Kota Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Ketahanan Nasional Jurnal Teknik Pengairan: Journal of Water Resources Engineering agriTECH Jurnal Rekayasa Sipil dan Lingkungan Jurnal Aplikasi Teknik Sipil International Journal of Engineering and Emerging Technology Logic : Jurnal Rancang Bangun Dan Teknologi Jurnal Ilmiah Teknik Sipil Open Access DRIVERset
Mawiti Infantri Yekti
Universitas Negeri Yogyakarta
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Optimization of A Dynamic Program for Water Resources Utilization in the Mambal Irrigation Area Yekti, Mawiti Infantri; Putera, I Gusti Agung Adnyana; Adnyana, Made Mahat Budhi
agriTECH Vol 44, No 4 (2024)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.83467

Abstract

The Irrigation Area (D. I.) Mambal, which passes through Badung Regency, Denpasar City, and Tabanan Regency, is the largest irrigation water supplied by the Ayung River, covering an area of 5.963 Ha. Despite the Ayung River’s substantial water potential, the D. I. Mambal experiences water shortages during certain months. This research aims to improve the effectiveness and efficiency of irrigation water use based on the Global Planting Management Plan (RTTG) using simulation methods and dynamic program optimization. Simulations were carried out under low conditions, normal and sufficient dependable discharges, using both existing and alternative RTTG. The objective function of the dynamic optimization seeks to maximize revenue gain from the applied RTTG. The existing cropping pattern at the beginning of planting in October showed an average proportion of fulfillment of water irrigation needs at 85%. Under the Alternative I condition, with planting beginning in November, the average proportion of fulfillment of irrigation water needs was 89%. In Alternative II conditions, with planting beginning in December, the average proportion of fulfillment of irrigation water needs was 87%. By optimizing the water discharge using the dynamic program, the irrigation profit for the existing cropping pattern (October) amounted to IDR 491,816,154,938. The highest profit was obtained using the Alternative II cropping pattern (December), totaling IDR 606,675,369,830. Meanwhile, the lowest profit was obtained in the Alternative I cropping pattern (November), which was IDR 360,767,292,361. The analysis showed that the Alternative II cropping pattern, starting with the first rice planting period in December, yields the most optimal results. The analysis considers the optimized air allocation and irrigation benefits obtained from the third cropping pattern.
Infiltration Well Design for Environmental Conservation: Assessing Watershed and Groundwater Depth in Denpasar City Pamungkas, Tri Hayatining; Yekti, Mawiti Infantri; Ardana, Putu Doddy Heka; Warsana, Kadek Budhi; Kembarajaya, I Ketut
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 1 (2025): March 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i1.168-182

Abstract

Urbanization and climate change are expected to exacerbate and introduce uncertainty in future flood characteristics. The city of Denpasar often experiences flooding due to rapid population growth and changes in land use. One form of flood mitigation that can be implemented is infiltration wells. This research aims to design infiltration wells as an environmental conservation effort by evaluating the characteristics of the watershed and the depth of groundwater. This research will also examine lithological aspects and use geographic information systems (GIS) to increase effectiveness in planning. The research results show that the construction of infiltration wells at the research location is effective in reducing flood volume, with reductions varying between 19.86% in South Denpasar and 59.58% in North Denpasar, East Denpasar and West Denpasar. Infiltration wells not only reduce the risk of flooding but also play an important role in preserving the environment according to the Tri Hita Karana concept. By integrating these sustainable practices into spatial planning, water resource management can be enhanced, fostering a healthy environment for future generations.
Keberlanjutan Pengelolaan Penyediaan Air Minum Perdesaan Dan Implikasinya Terhadap Ketahanan Lingkungan Wilayah (Studi Di Kabupaten Buleleng, Provinsi Bali) Kerta Arsana, I Gusti Ngurah; Yekti, Mawiti Infantri; Astiti, Sagung Putri Chandra
Jurnal Ketahanan Nasional Vol 30, No 1 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jkn.90282

Abstract

ABSTRACT Rural drinking water management in Buleleng Regency was served by rural drinking water supply (PAM Des) and community-based drinking water supply (Pamsimas). Providing sustainable rural drinking water was the most basic need through the implementation of Tri Hita Karana. Tri Hita Karana (THK) as a sustainability concept greatly determined the success of regional environmental resilience. This research aimed to analyzed strategies for increasing the implementation of Tri Hita Karana in sustainability in the management of PAM Des. Analysis of the sustainability index for PAM Des management used the Multi Dimensional Scaling (MDS) method. Multi Dimensional Scaling also analyzed lever factors that were sensitive to sustainability.The results of the analysis showed that the sustainability index value for the ecological dimension was 70.11%, the economic dimension was 46.00%, the socio-cultural dimension was 50.65%, the technological dimension was 46.89% and the institutional dimension was 49.74%. The sustainability index value for the ecological and socio-cultural dimensions with a value above 50% was quite sustainable. The sustainability index value of the economic, technological and institutional dimensions of the less sustainable category. The leverage factors obtained from the analysis of 5 (five) dimensions of sustainability were 19 factors.The strategy to increased the implementation of Tri Hita Karana in the ecological and socio-cultural dimensions was the implementation of mutual exchange between PAM Des managers and land owners of springs, implementation of magpag toya upakara, tumpek wariga, community participation in PAM Des, use of water according to needs, adjustment of the level of community water needs and community concern for PAM Des infrastructure. In the economic, technological and institutional dimensions, this must be done by improving, improving the PAM Des infrastructure and also regulations that strengthened the management of PAM Des. The strategy to increased the implementation of Tri Hita Karana had had a positive impact on environmental resilience in the management of rural drinking water supplies in Buleleng Regency, Bali.
Evaluation of Flood Handling at Seminyak Way II, in The Tukad Mati Drainage Sub System I Gusti Ngurah Kerta Arsana; Mawiti Infantri Yekti; Dewa Ayu Utari Winandari
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 23 No. 3 (2023): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v23i3.175-181

Abstract

Flood is a natural phenomenon that often occurs in several areas of Badung Regency. Losses result in damage to buildings, roads, and other public facilities. Floods are caused by a more sloping land topography, changes in land use to dense settlements, and soil conditions. This study aims to deal with flooding by evaluating the existing canal on Jalan Kunti II Seminyak. The method used for testing data consistency is the RAPS (Rescaled Adjusted Partial Sums) method. The distribution used is Log Person Type III. Testing of frequency distribution used the Smirnov – Kolmogorov Test and the Chi-Square Test. Analysis of rainfall intensity using the Mononobe formula. Calculation of planned flood discharge (Q) uses the Rational method, Nakayasu method, and theoretical discharge control for 2, 5, 10, and 25-year return periods with the existing channel capacity. The result of the analysis shows that the theoretical discharge with a return period has met of planned flood discharge so that the drainage on Jalan Kunti can accommodate the planned flood with a return period of 10 years. Where the drainage capacity of Jalan Kunti is 0,412 m3/second & 0,461 m3/second. The drainage ditch with a capacity of 200 m3/second to Tukad Mati has not been able to accommodate the planned flood discharge for the 25-year return period of 242.33 m3/second. The Tukad Mati channel for the existing Q 675,825 m3/second has been able to accommodate the flood discharge Q at the 25-year return period of 314.49 m3/second.
ANALYSIS OF THE OPERATIONAL PATTERN OF THE BILI-BILI RESERVOIR IN GOWA DISTRICT, SOUTH SULAWESI PROVINCE Rahel E.T. Hendy; Alvin Yesaya; Silvia Gabrina Tonyes; Mawiti Infantri Yekti
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 2 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 2, September 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i02.p08

Abstract

The Bili-Bili Reservoir serves multiple purposes, including flood control, raw water supply, irrigation, and hydropower generation. In 2021, significant discrepancies were observed between the Annual Reservoir Operation Plan (AROP) and the actual Reservoir Operation Pattern (ROP). during the first 15 days of December 2021, the AROP targeted a rest water level (RWL) of +77.34 m with a planned discharge of 20.27 m³/sec. In contrast, the realized RWL reached +92.35 m with an actual discharge of 45 m³/sec. This study aims to analyze the causes of these differences and compare the reservoir operations outlined in the AROP with those reflected in actual utilization, using an operational pattern simulation based on variations in irrigation water requirement (IWR). Analysis using a dependable flow of 80% shows that the total IWR in the AROP is only 69% of the IWR calculated from actual reservoir utilization, likely due to declining inflow trends and an operational pattern that adjusts to inflow magnitude and rainfall. Meanwhile, the realized IWR is 32% greater than the utilization analysis and 91% greater than the AROP, indicating that the reservoir released more water than planned, following actual inflow conditions. This study highlights the need for more adaptive reservoir operation planning to ensure effective water resource management.
ANALYSIS OF THE OPERATIONAL PATTERN OF THE BILI-BILI RESERVOIR IN GOWA DISTRICT, SOUTH SULAWESI PROVINCE Rahel E.T. Hendy; Alvin Yesaya; Silvia Gabrina Tonyes; Mawiti Infantri Yekti
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 2 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 2, September 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i02.p08

Abstract

The Bili-Bili Reservoir serves multiple purposes, including flood control, raw water supply, irrigation, and hydropower generation. In 2021, significant discrepancies were observed between the Annual Reservoir Operation Plan (AROP) and the actual Reservoir Operation Pattern (ROP). during the first 15 days of December 2021, the AROP targeted a rest water level (RWL) of +77.34 m with a planned discharge of 20.27 m³/sec. In contrast, the realized RWL reached +92.35 m with an actual discharge of 45 m³/sec. This study aims to analyze the causes of these differences and compare the reservoir operations outlined in the AROP with those reflected in actual utilization, using an operational pattern simulation based on variations in irrigation water requirement (IWR). Analysis using a dependable flow of 80% shows that the total IWR in the AROP is only 69% of the IWR calculated from actual reservoir utilization, likely due to declining inflow trends and an operational pattern that adjusts to inflow magnitude and rainfall. Meanwhile, the realized IWR is 32% greater than the utilization analysis and 91% greater than the AROP, indicating that the reservoir released more water than planned, following actual inflow conditions. This study highlights the need for more adaptive reservoir operation planning to ensure effective water resource management.
Sediment Transport Modeling at the Bogowonto River Bend Using HEC RAS 6.6 Purwantoro, Didik; Yekti, Mawiti Infantri; Ratnaningsih, Rossita Yuli; Rofi’ah, Nanda Nur; Mayra, Farah
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 21 No. 2 (2025): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v21i2.91818

Abstract

River bend erosion is a major concern for river engineers because it affects channel stability and navigation safety. Erosion along the outer bank and deposition along the inner bank are the primary processes responsible for the meandering pattern of rivers. This study investigates the effect of discharge variations on scour depth in a meandering reach of the Bogowonto River using numerical modeling with HEC-RAS 6.6. Simulations were carried out for six discharge scenarios corresponding to return periods of 2,5, 10, 20, 50, and 100 years (Q2, Q5, Q10, Q20, Q50, and Q100). The historical rainfall data collected from 2002 to 2021. Limantara Unit Hydrograph used for rainfall-runoff modelling. The HEC-RAS simulation results of the 2-year return period (Q2) reveal that sedimentation occurs at five points along the Bogowonto River bend in Purworejo District. In particular the greatest accumulation occurred at the apex of the bend (STA 17), where the bed sediment thickness reached 4.175 m at the Q100 discharge. The simulation results show a uniform sedimentation pattern across the entire bend cross-section, likely due to model limitations that prevent detailed representation of cross-flow patterns.
Co-Authors A. A. Diah Parami Dewi Adnyana, Made Mahat Budhi Alvin Yesaya Anissa Maria Hidayati Annilda, Fitria Aryasavira, Made Dwita Berlian Ayub Benny Kristianto Cahyani, Kadek Desylia Corry Fanny Bethania Dewa Ayu Utari Winandari Didik Purwantoro, Didik Gede Fajar Eka Aditya Sujana Gede Pebriarta Pratama, Ida Bagus Haditama, I Gusti Ngurah Hesa Respati I Gusti Ngurah Kerta Arsana I Kadek Dika Arimbawa I Made Bayu Purnama I Made Kariyana I Made sutrisna Ari Kesuma I Nyoman Dharma Krisnahadi I Nyoman Norken I Nyoman Suparyana I Putu Gustave Suryantara Pariartha I PUTU GUSTAVE SURYANTARA PARIARTHA I Wayan Redana Ida Bagus Gede Indrayana Ida Bagus Ngurah Purbawijaya Kadek Budhi Warsana Kadek Diana Harmayani Kadek Diana Harmayani Kedaton, Kadek Hindhu Putra Kembarajaya, I Ketut Made Dwita Berlian Aryasavira Made Putri Irmayani Mayra, Farah Mecris Mides Yumame Putera, I Gusti Agung Adnyana Putu Doddy Heka Ardana Putu Gita Widiarsini Rahel E.T. Hendy Rofi’ah, Nanda Nur Rossita Yuli Ratnaningsih Sagung Putri Chandra Astiti Selvi Marcellia Silvia G Tonyes Silvia Gabrina Tonyes Siti Nur Indah Sari Siti Nurul Khotimah Sudiartama, I Gede Agus Tjokorda Gde Raka Wijakesuma Tri Hayatining Pamungkas Warsana, Kadek Budhi Yujana, Cokorda Agung