Abstract

본 연구는 유역의 가뭄 예ㆍ경보 기준을 사용한 저수지 운영과 저수지의 운영률을 수행한 결과를 비교하여, 보다 효율적인 저수지 운영방안을 검토하였다. 그 결과 가뭄 예ㆍ경보 시스템과 방류계수를 사용한 저수지 운영이 기존의 저수지 운영률을 사용한 저수지 운영에 비하여 신뢰도와 연평균 저류량이 향상됨을 확인할 수 있었다. 시범유역으로 선정된 금강유역의 용담댐에서 저수지 운영시 사용할 방류계수로는 가뭄주의일 때 0.95, 가뭄경보일 때 0.9, 가뭄비상일 때 0.85의 값이 가장 효율적인 것으로 검토되었다. 가뭄 예<TEX>$\cdot$</TEX>경보를 사용한 저수지 운영은 가뭄시 수자원의 효율적인 이용을 가능하게 하며, 국가 수자원 관리에 크게 이바지할 것으로 판단된다. In this study, the efficient reservoir operation is studied by comparing results from reservoir operation using a basin drought forecasting and warning system with an existing reservoir operation rule. As a result, it is found that the reliability and average annual storage of reservoir operation using a basin drought forecasting and warning system and release coefficients is better than those of reservoir operation using the existing operation rule. The release coefficients for Yongdam dam located in the Geum river basin selected as a case study are found to be the most effective for the value of 0.95 for the drought watch, 0.9 for the drought warning and 0.85 for the drought emergency. The reservoir operation using a drought forecasting and warning enables the use of the limited water resources effectively during drought and will contribute the national water resources management.

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