Since South Korea relies on dams and agricultural reservoirs for approximately 45% of its annual agricultural water usage, the supply control of agricultural water based on its usage amount is essential for effective water resources management. The objective of the study, therefore, is to suggest an alternative to the agricultural water supply from the Hoengseong Dam using the threshold curve of usage record that was suggested in the previous study. The characteristics of agricultural water usage and Usage Rate compared to the Permission amount (URP) threshold curve of the Seom River basin, which is defined as the thresholds of the maximum usage rate of agricultural water in each hydrological condition, were derived and analyzed using the historical record of runoff and agricultural water usage. The agricultural water supply of the Hoengseong Dam was simulated from 2006 to 2021 according to the URP threshold curve. As a result, it was found that the agricultural water usage rate of the Seom River Basin can be up to 106.5% even with the average hydrological condition compared to normal years. It was also shown that about 1.7 million m³ of agricultural water could be stored by applying the URP threshold curve to the agricultural water supply of the Hoengseong Dam annually.

中文翻译：

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基于流域水文状况的横城大坝农业供水研究

由于韩国每年大约 45% 的农业用水量依赖于水坝和农业水库，因此基于用水量的农业用水供应控制对于有效的水资源管理至关重要。因此，本研究的目的是使用先前研究中提出的使用记录阈值曲线，提出替代横城大坝农业供水的替代方案。农业用水和使用率的特征与 Seom 河流域的许可量 (URP) 阈值曲线相比，该曲线被定义为每种水文条件下农业用水的最大使用率的阈值，并使用径流和农业用水的历史记录。根据URP阈值曲线模拟了2006年至2021年横城大坝的农业供水。结果发现，即使在平均水文条件下，与常年相比，Seom 河流域的农业用水率也可以达到 106.5%。还表明，约 170 万平方米将 URP 阈值曲线应用于横城大坝的农业供水，每年可储存^{3的农业用水。}