Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Analysis of Temporal and Spatial Changes in Observed Groundwater Level in a Paddy Region

논 관개 지역의 지하수위 관측을 통한 시공간적 지하수위 변동 특성 분석

  • Jang, Min-Won (Department of Agricultural Engineering, Institute of Agriculture & Life Science, Gyeongsang National University) ;
  • Park, Ki-Wook (Korea Rural Community Corporation) ;
  • Kim, Seong Joon (Department of Civil and Environmental System Engineering, Konkuk University) ;
  • Bae, Seung-Jong (Research Institute for Agriculture & Life Sciences, Seoul National University)
  • Received : 2015.11.25
  • Accepted : 2015.11.27
  • Published : 2015.11.30
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Abstract

This study aimed to establish a field observation system for monitoring tempo-spatially precise changes of groundwater level and to analyze the impact of rainfall and irrigation practices on groundwater changes in paddy regions. The monitoring system comprising of all nine groundwater observation wells and four ponding depth sensors was installed in a part of paddy regions benefited from Gosam reservoir, Ansung-si. The result of grundwater level change during the irrigation period in 2002 was averagely 0.51 m higher than that during the non-irrigation period. In particular between March before puddling and June after transplanting, there was maximum 1.23 m rise in groundwater level. On the other hand, concerning the change in ponding depth, groundwater level changed similarly, and hourly rainfall was revealed to have better correlation with 24-hour delayed hourly groundwater level than with the corresponding groundwater level. Eventually, this study could be referenced for further studies to set up a more comprehensive and sustainable monitoring system of groundwater conditions.

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References

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