A Study on the Potential of Agricultural Water and Environmental Flow Supply according to Regulating Lower Control Storage Rate for the Irrigation Reservoir

Jiyeon Jeong; Minhyuk Jeung; Jina Beom; Minkyeong Park; Jaenam Lee; Seung-Hwan Yoo; Kwang-Sik Yoon

doi:10.5389/KSAE.2023.65.2.021

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A Study on the Potential of Agricultural Water and Environmental Flow Supply according to Regulating Lower Control Storage Rate for the Irrigation Reservoir 농업용 저수지의 하한 관리 저수율 설정에 따른 농업용수 및 환경용수 공급 가능성 고찰

2023. pp. 21-33

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Abstract

While the main purpose of irrigation reservoirs is to supply agricultural water, the needs of environmental flow and flood control has been expanded. The agricultural reservoirs have been operated in the form of carry-over system until now. Therefore, the supply of agricultural water is difficult when the storage rate is not sufficiently secured after large volume of irrigation. In addition, there are regulation of the upper storage rate for some large reservoirs during the flood season, but lower storage rate is not regulated. Accordingly, this study aims to evaluate the capacity of agricultural water and environmental flow supply by setting the management lower storage rate of reservoir. The changes in the supply of agricultural and environmental flow was simulated according to the three different regulating lower storage rate scenarios. As a result, it was judged effective in terms of water supply managing the lower storage rate up to 30% when the initial storage rate of farming period is above annual average for the Naju reservoir considering existing water management practice. If the lower storage rate would have been controlled above 30%, the supply of agricultural water might be increased and non-effective discharge amount would be decreased compared to other scenarios during dry period of 2016-2018.

Keywords

Reservoir operation

agricultural water

environmental flow

CAT model

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Information

Publisher :The Korean Society of Agricultural Engineers
Publisher(Ko) :한국농공학회
Journal Title :Journal of Korean Society of Agricultural Engineers
Journal Title(Ko) :한국농공학회논문집
Volume : 65
No :2
Pages :21-33
Received Date : 2022-11-02
Revised Date : 2023-01-19
Accepted Date : 2023-01-20
DOI :https://doi.org/10.5389/KSAE.2023.65.2.021

Journal of Korean Society of Agricultural Engineers ISSN:1738-3692(Print) 2093-7709(Online) 한국농공학회논문집

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