Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Evaluation of the Irrigation Water Supply of Agricultural Reservoir Based on Measurement Information from Irrigation Canal

수로부 계측정보 기반 농업용 저수지의 관개용수 공급량 평가

  • Lee, Jaenam (Rural Research Institute, Korea Rural Community Corporation) ;
  • Noh, Jaekyoung (Department of Agricultural and Rural Engineering, Chungnam National University) ;
  • Kang, Munsung (Rural Research Institute, Korea Rural Community Corporation) ;
  • Shin, Hyungjin (Rural Research Institute, Korea Rural Community Corporation)
  • Received : 2020.08.25
  • Accepted : 2020.10.26
  • Published : 2020.11.30
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Abstract

With the implementation of integrated water management policies, the need for information sharing with respect to agricultural water use has increased, necessitating the quantification of irrigation water supply using monitoring data. This study aims to estimate the irrigation water supply amount based on the relationship between the water level and irrigation canal discharge, and evaluate the reliability of monitoring data for irrigation water supply in terms of hydrology. We conducted a flow survey in a canal and reviewed the applicability of the rating curve based on the exponential and parabolic curves. We evaluated the reliability of the monitoring data using a reservoir water balance analysis and compared the calculated results of the supply quantity in terms of the reservoir water reduction rate. We secured 26 readings of measurement data by varying the water levels within 80% of the canal height through water level control. The exponential rating curve in the irrigation canal was found to be more suitable than the parabolic curve. The irrigation water supplied was less than 9.3-28% of the net irrigation water from 2017 to 2019. Analysis of the reservoir water balance by applying the irrigation water monitoring data revealed that the estimation of the irrigation water supply was reliable. The results of this study are expected to be used in establishing an evaluation process for quantifying the irrigation water supply by using measurement information from irrigation canals in agricultural reservoirs.

Keywords

References

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