Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Estimation of Water Loss in Irrigation Canals through Field Measurement

현장 측정을 통한 관개용수로의 손실량 추정

  • 이용직 (한국농촌공사 정보관리실) ;
  • 김필식 ;
  • 김선주 (건국대학교 생명환경과학대학) ;
  • 지용근 (건국대학교 생명환경과학대학 대학원) ;
  • 주욱종 (한국농촌공사 농어촌연구원 생산자원연구소)
  • Published : 2008.01.31
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Abstract

Water losses in irrigation canals are mainly estimated as the sum of conveyance and delivery water loss. The losses occur via the evaporation, infiltration, gate operation and water distribution processing. Recently, the study regarding these water losses are not satisfactory enough, also delivery water loss has not been mainly considered on field design. The objective of this study is to investigate and analyze the volume of water loss in irrigation canals considering condition of actual farm land. A field measurement was performed at four research sites, which are managed by Korea Rural Community & Agriculture Corporation, to evaluate conveyance and delivery water loss for 2 years. The measurement was performed by canal type, size and designed flow using the inflow-outflow method at a major points such as start and end of each canal, derivation point of canal and inlet of paddy fields. Results of this study showed that water loss ratio in lateral canals was bigger than that of main canal unlike current design standard and the loss decrease as flow increase. The total of water loss ratio including conveyance and delivery water loss in several irrigation canals ranged between 33.25 and 45.0%.

Keywords

References

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