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http://dx.doi.org/10.9719/EEG.2021.54.3.373

Data-driven Analysis for Developing the Effective Groundwater Management System in Daejeong-Hangyeong Watershed in Jeju Island  

Lee, Soyeon (Department of Geology, Kyungpook National University)
Jeong, Jiho (Department of Geology, Kyungpook National University)
Kim, Minchul (Jeju Groundwater Research Center, Jeju Research Institute)
Park, Wonbae (Jeju Groundwater Research Center, Jeju Research Institute)
Kim, Yuhan (Department of Geology, Kyungpook National University)
Park, Jaesung (Department of Geology, Kyungpook National University)
Park, Heejeong (Department of Geology, Kyungpook National University)
Park, Gyeongtae (Department of Geology, Kyungpook National University)
Jeong, Jina (Department of Geology, Kyungpook National University)
Publication Information
Economic and Environmental Geology / v.54, no.3, 2021 , pp. 373-387 More about this Journal
Abstract
In this study, the impact of clustered groundwater usage facilities and the proper amount of groundwater usage in the Daejeong-Hangyeong watershed of Jeju island were evaluated based on the data-driven analysis methods. As the applied data, groundwater level data; the corresponding precipitation data; the groundwater usage amount data (Jeoji, Geumak, Seogwang, and English-education city facilities) were used. The results show that the Geumak usage facility has a large influence centering on the corresponding location; the Seogwang usage facility affects on the downstream area; the English-education usage facility has a great impact around the upstream of the location; the Jeoji usage facility shows an influence around the up- and down-streams of the location. Overall, the influence of operating the clustered groundwater usage facilities in the watershed is prolonged to approximately 5km. Additionally, the appropriate groundwater usage amount to maintain the groundwater base-level was analyzed corresponding to the precipitation. Considering the recent precipitation pattern, there is a need to limit the current amount of groundwater usage to 80%. With increasing the precipitation by 100mm, additional groundwater development of approximately 1,500m3-1,900m3 would be reasonable. All the results of the developed data-driven estimation model can be used as useful information for sustainable groundwater development in the Daejeong-Hangyeong watershed of Jeju island.
Keywords
Daejeong-Hangyeong watershed; groundwater level fluctuation pattern; clustered groundwater supply facility; groundwater level degradation; sensitivity analysis;
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