Journal of Korean Society of Rural Planning (농촌계획)

Korean Society of Rural Planning (한국농촌계획학회)
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Assessment of domestic water supply potential of agricultural reservoirs in rural area considering economic index

경제성 지표를 활용한 농업용저수지의 생활용수 공급가능성 평가

  • 윤광식 (전남대학교 지역.바이오시스템공학과) ;
  • 최수명 (전남대학교 지역.바이오시스템공학과) ;
  • 채종훈 (조선대학교 경제학과) ;
  • 유승환 (전남대학교 지역.바이오시스템공학과) ;
  • 최동호 (국립농업과학원 기후변화생태과) ;
  • 윤석군 (한국농어촌공사) ;
  • 이창희 (한국농어촌공사) ;
  • 정경훈 (한국농어촌공사) ;
  • 신길채 (한국농어촌공사)
  • Received : 2016.07.19
  • Published : 2017.02.28
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Abstract

Existing agricultural reservoirs are considered as alternative source for the water welfare of rural area. In this study, domestic water supply potential of 476 reservoirs, which has storage capacity more than one million cubic meter, out of 3,377 agricultural reservoirs managed by Korean Rural Community Corporation (KRC) were investigated. Among them water quality of 136 reservoirs met the criteria of domestic water source which show less than COD 3 ppm. Available amount for domestic water of reservoirs, which meet the water quality, for ten year return period of drought was analyzed with reservoir water balance model. The results showed that 116 reservoirs has potential for supplementary domestic water supply while satisfying irrigation water supply. Finally, economic analysis using Net Present Value (NPV), Benefit-Cost (B/C) ratio, Internal Rate of Return (IRR), and Profitability Index (PI) methods was also conducted. The analysis showed that 19 reservoirs satisfied economic feasibility when water is provided from reservoir outlet but only 9 reservoirs meet the economic feasibility if water delivered from a reservoir to treatment plant by newly built conveyance canal. In order to supply the domestic water through the agricultural reservoirs managed by KRC, it is necessary to flexibly interpret and operate the 'Rearrangement of Agricultural and Fishing village Act'. Also, it is reasonable to participate in the water service business when there is a supply request from other Ministries. In addition, the KRC requires further effort to change the crop system for saving water and improve efficiency of irrigation systems.

Keywords

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