Advanced SearchSearch Tips
Hydrogeologic and Hydrogeochemical Assessment of Water Sources in Gwanin Water Intake Plant, Pocheon
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Hydrogeologic and Hydrogeochemical Assessment of Water Sources in Gwanin Water Intake Plant, Pocheon
Shin, Bok Su; Koh, Dong-Chan; Chang, Yoon-Young;
  PDF(new window)
The section from water source to 2.6km upper stream of Hantan River is protected as the drinking water quality protection area according to guidelines of Ministry of Environment, because water source of the Gwanin water intake plant has been known the river. However, opinions were consistently brought up that the standard of water source protection zone must be changed with using underground water as water source because of contribution possibility of underground water as the water source of Gwanin water intake facility. In this regard, hydrogeologic investigation including resistivity survey and hydrogeochemical investigation were carried out to assess water source and infiltration of contaminant for the plant. Quaternary basaltic rocks (50m thick with four layers) covered most of the study area on the granite basement. As the result of the resistivity survey, it is revealed that permeable aquifer is distributed in the boundary of two layers: the basaltic layer with low resistivity; and the granite with high resistivity. Considering of outflow from Gwanin water intake facility, the area possessing underground water was estimated at least . The underground water recharged from Cheorwon plain was presumed to outflow along the surface of unconformity plane of basalt and granite. Based on field parameters and major dissolved constituents, groundwater and river water clearly distinguished and the spring water was similar to groundwater from the basaltic aquifer. Temporal variation of , Mg, , and concentrations indicated that spring water and nearby groundwater were originated from the basaltic aquifer and other groundwater from granitic aquifer. In conclusion, the spring of the Gwanin water intake plant was distinguished from river water in terms of hydrogeochemical characteristics and mainly contributed from the basaltic aquifer.
Groundwater;Drinking water source;Hydrogeologic;Hydrogeochemistry;Resistivity survey;Basaltic aquifer;
 Cited by
Geological report of the Jipo-ri, Gimhwa sheet. 2007. Korea Institute of Geoscience And Mineral Resources.

Groundwater management basic plan. 2007. Ministry of Land, Infrastructure and Transport.

Hahn J, Lee Y, Kim N, Hahn C, Lee S. 1997. The groundwater resources and sustainable yield of Cheju volcanic island. Korea Environmental Geology. 33(1): 43-53. [Korean Literature] crossref(new window)

Kim GB, Choi DH, Shin SH. 2011. Characteristics of Groundwater Levels Fluctuation and Quality in Ddan-sum Area. J Korean Geo-Environmental Society. 12(2): 35-43(February, 2011). [Korean Literature]

Kim GY, Koh YK, Kim CS, Kim HS, Kim SY. 2003. Geochemical Study on the Alluvial Aquifer System of the Nakdong River for the Estimation of River Bank Filtration. The J Engineering Geology. 13(1): 83-105.

Koh DC, Cheon SH, Park KH. 2007. Characterization of Groundwater Quality and Recharge using Periodic Measurements of Hydrogeochemical Parameters and Environmental Tracers in Basaltic Aquifers of Jeju Island. J KoSSGE. 12(4): 60-71 [Korean Literature]

Koh DC, Plummer LN, Solomon DK, Busenberg E, Kim YJ, Chang HW. 2006. Application of environmental tracers to mixing, evolution, and nitrate contamination of ground water in Jeju Island, Korea. J hydrology. 327(1): 258-275. [Korean Literature] crossref(new window)

Lee DS, Ryu kJ, Kim GH. 1983. Geotectonic Interpretation of Choogaryong Rift Valley, Korea. J Geological Society of Korea. 19(1): 19-38. [Korean Literature]

Lee HH, Han U, Kim DJ, Kim DI. 1992. Geological and Terrain Analysis o Choogaryeong Rift Valley in Cheolwon Area : Military Applications. Jour. Korean Earth Science Society. 13(2): 136-144. [Korean Literature]

Operation data of Gwanin protection area of source water. 2013. Korea Water Resources Corporation.

Song MY, Shin KS. 1998. Satellite Image Analysis for the Geologic Structure and Land Surface Environments in the Chugaryung Rift Valley Near Cholwon. J Korean Earth Science Society. 19(6): 675-683. [Korean Literature]

The status of Designated protection area of source water. 2013. Ministry of Environment.

The status of the using water resource map. 2007. Ministry of Construction & Transportation.

W NC, Kim HD, Lee KS, Park WB, Koh GW, Moon YS. 2001. Interpretation of Groundwater System and Contamination by Water-Quality Monitoring in the Daejung Watershed, Jeju Island. J Econ Environ. Geol. 34(5): 485-498. [Korean Literature]

Won JH, Lee JY, Kim JW, Koh GW. 2006. Groundwater occurrence on Jeju Island, korea. J Hydrogeology. 14(4): 532-547. [Korean Literature] crossref(new window)

Won JK. 1983. A Study on the Quarternary Volcanism in the Korean Peninsula, Korea. J Geological Society of Korea. 19(3): 159-168. [Korean Literature]

Yang KS. 1982. A study on volcanic rocks of downstream area of the Hantan River in Choograryong rift valley. J Korean E.S.E.A. 3(1): 13-25. [Korean Literature]

Yun SW, Lee JY, Lee HG. 2015. Variation of stream water quality and baseflow contribution from groundwater during rainfall event in the Haean basin. J Geological Society of Korea. 51(6): 611-621. [Korean Literature] crossref(new window)