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All Journal BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Jurnal Teknik Sipil
Murdiagatma, Sefrinta Sasma
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Civil Engineering, Building, Construction & Architecture Transportation

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Pengaruh Perubahan Iklim pada Konstruksi Bendungan: Review Artikel Murdiagatma, Sefrinta Sasma
Jurnal Teknik Sipil Vol 21 No 1 (2025): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jts.v21i1.8009

Abstract

Climate change is a change in climate components such as temperature, rainfall, humidity, evaporation, wind direction and speed, and air. Climate change is a big problem that affects many areas, including dam construction. Climate change affects the ecosystem within the dam, changing river flow patterns and sediment reduction, affecting riparian vegetation, changing the frequency of waterlogging and swamp connectivity, and increasing the risk of flooding and dam safety. This research aims to conduct a literature study to determine the influence of the impact of climate change on dam construction from various aspects and problems that may occur. By using a comprehensive descriptive research method to summarize the entire material of this literature study. This study produces an understanding of how climate change can affect freshwater ecosystems, and natural river flow patterns, and cause changes in temperature, precipitation, and wind patterns. The amount of sediment that falls into rivers becomes greater during the rainy season, causing potential water shortages during the dry season and flooding during the rainy season, and changes in land use due to dam construction. For this reason, it is necessary to control and manage dam construction, as well as risk mitigation so that the impact of climate change that occurs on dam construction can be avoided.
Sustainability Analysis of Water Availability in Way Sekampung Dam using Vensim Dynamic Program Murdiagatma, Sefrinta Sasma; Wahono, Endro Prasetyo; Kusumastuti, Dyah Indriana; Purwadi, Ofik Taupik; Zakaria, Ahmad
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 2 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (July 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i2.10579

Abstract

The sustainability of dam operations needs to be reviewed in terms of water availability, in order to maintain the sustainability of water demand in all sectors in the coming years. This study aims to analyze of water availability of the Way Sekampung Dam reservoir according to its needs using one of the applications of the dynamic program, Vensim. The study used data-driven scenario simulations on the Vensim application, to analyze key factors including available inflows, required outflows, storage capacity of the dam and plans to supply raw water over a 25-year period. The results show that the dam can supply raw water for Bandar Lampung, Beranti, Pringsewu and Metro City with a total capacity of 2,737 liters per second and support water needs for potential irrigation of 76,006 hectares. Optimization of the dam's storage operation can be achieved, with a target reliability of 100% occurring in 2027, the year when the dam's storage condition reaches its optimal level at an elevation of +125.23 meters. To meet downstream water demand, the dam's storage capacity must be maintained at an elevation of +124.0 meters or higher, with a volume of 68,060,000 m³ and an inundation area of 5,020.8 km2. If the water storage falls below this elevation, it will be necessary to update the water allocation policy, adjust management regulations, appropriate management strategies, including periodic updating of the reservoir operation rules and implementation of a flexible water release schedule, to ensure continuous water availability at the Way Sekampung Dam reservoir.
Co-Authors Ahmad Zakaria Dyah Indriana Kusumastuti Endro Prasetyo Wahono Purwadi, Ofik Taupik