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http://dx.doi.org/10.9719/EEG.2015.48.5.409

Water Quality in a Drainage System Discharging Groundwater from Sangdae-ri Water Curtain Cultivation Area near Musimcheon Stream, Cheongju, Korea  

Moon, Sang-Ho (Korea Institute of Geoscience and Mineral Resources (KIGAM))
Kim, Yongcheol (Korea Institute of Geoscience and Mineral Resources (KIGAM))
Hwang, Jeong (Daejeon University, Dept. of Construction Safety and Disaster Prevention)
Publication Information
Economic and Environmental Geology / v.48, no.5, 2015 , pp. 409-420 More about this Journal
Abstract
The Sangdae-ri riverside around Musimcheon stream, flowing through Gadeok-myon of Cheongju City, is one of the representative strawberry fields employing water curtain cultivation (WCC) in Korea. In this area, annual groundwater use for WCC has been calculated by a few methods. On the assumption that all the water flowing through the final ditch may be mostly composed of groundwater, the discharge rate in it can be used as a good proxy for assessing the groundwater use. However, in the study area, the final ditch was set up in an unpaved state near and parallel to Musimcheon stream. Under such circumstances, the drainwater is likely to be influenced by infiltration and/or inflow of nearby stream. Hence, we examined whether or not stream water has influenced water flowing out through the final ditch in respect of ion concentrations or field parameters such as T, pH and electrical conductivity (EC) values. The period of measuring field parameters and sample collection was from February 2012 through February 2015. The drainwater in the final ditch did not show the average quality of groundwater, but similar quality of stream water in respect of pH, EC, ion contents and water type. From this, it is suggested that measuring the flow rate of the final ditch should not be directly used for assessing groundwater use in the study area. In addition, because of its sensitivity to ambient temperature, water temperature proved not to be appropriate for estimating the interaction between ditch and stream. For accuracy, additional methods will be needed to calculate mixing ratios between stream and ground water within drainage system.
Keywords
Cheongju; Musimcheon; water curtain cultivation; groundwater use and discharge; ditch water quality;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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