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Evaluation of Water Supply Adequacy using Real-time Water Level Monitoring System in Paddy Irrigation Canals

실시간 관개수로 수위 모니터링을 활용한 논 관개용수 공급적정성 평가

  • 홍은미 (서울대학교 농업생명과학연구원) ;
  • 남원호 ;
  • 최진용 (서울대학교 조경.지역시스템공학부, 농업생명과학연구원) ;
  • 김진택 (한국농어촌공사 농어촌연구원)
  • Received : 2014.04.16
  • Accepted : 2014.06.03
  • Published : 2014.07.31

Abstract

Appropriate amount of water supply to paddy fields in proper time is important to achieve efficient agricultural water management. The purpose of this study is to evaluate the irrigation water supply adequacy for paddy fields using water level data in irrigation canals. For the evaluation, the real-time water level data were collected from main canals in the Dongjin irrigation district for 2 years. Using the water level data, delivered irrigation water amounts at the distribution points of each canal were calculated. The water balance model for paddy field was designed considering intermittent irrigation and the irrigation water requirement was estimated. Irrigation water supply adequacy was analyzed from main canals to the irrigation blocks based on the comparison between estimated requirement and delivered irrigation water amounts. From the adequacy analysis, irrigation water supply showed poor management condition in 2012 with low efficiency except the Daepyong canal section, and the adequacy in 2013 was good or fair except the Yongsung canal section. When irrigation water for paddy fields was insufficient, water supply adequacy was affected by irrigation area, but when irrigation water was enough to supply, adequacy was affected by distance from main canal to distribution points. These results of the spatial and temporal dimensions of the irrigation adequacy could be utilized for efficient irrigation water management to improve the temporal uniformity and equity in the water distribution for paddy fields.

Acknowledgement

Grant : 용수계통 최적 용수공급량 분석 및 산정모듈 통합 개발

Supported by : 한국농어촌공사, 한국농어촌연구원

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