현장조사 관개 기준에 따른 농업용 저수지 운영 분석

Abstract

The drought risk has been increasing recently due to climate change causing the extreme climate to be more frequent. In order to supply agriculturalwater stably under drought, it is necessary to operate an agricultural reservoir in response to drought. To this end, it is crucial to establish appropriatedrought response operation rules considering weather conditions and reservoir status. In the reservoir operation simulation, the supply amount differsfrom the actual reservoir supply for many reasons, including maintaining water levels for supply and accommodating farmers’ requests. So, for a morerealistic reservoir operation simulation, it is necessary to reflect the reservoir operation rules of the actual water management site. Therefore, in thisstudy, through a survey, the standards for limitation of agricultural water supply applied to agricultural reservoirs in Korea were investigated, and thecriteria for drought response reservoir operation (DRO) were established based on the survey. Then, the DRO was applied to the irrigation period fornine subject reservoirs. The applicability was evaluated by comparing the DRO result to the operation result of HOMWRS (Hydrological OperationModel for Water Resources System). The reservoir drought index, storage rate, and daily supply were compared for evaluation. From the result, DROshowed more stable operation results in most cases against drought as it has fewer days of water supply limitation and a somewhat reservoir storagerate which can be utilized for prolonged drought.