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Estimation of the Groundwater Discharges in Masan Bay Watershed  

Yang Jeong-Seok (서울대학교 지구환경시스템공학부)
Cho Hong Yeon (한국해양연구원 연안항만공학연구본부)
Jeong Shin Taek (원광대학교 토목환경도시공학부)
Kim Sang Jun (경원대학교 토목환경공학)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.16, no.4, 2004 , pp. 213-223 More about this Journal
Abstract
The discharges of groundwater flow were estimated using Darcy's method along the coastal zone in the Masan Bay. The estimates using the information, i.e., groundwater level, location of the observation well, hydraulic conductivity, the thickness of the aquifer, and coastline length, were 1.65% of the precipitation of the watershed. The estimated groundwater discharges through fractured rock aquifer and the aquifer with sedimentary material were $0.7\times10^4$$m^2/year$and $1.0\times10^7$$m^3/year$ respectively. Whereas, the discharge estimated by KORDI (2003) using isotopes method is about 20 times larger than the estimates from this study because of the influence of the re-circulated seawater through the coastal zone aquifer. In order to quantify this effect in detail, the groundwater levels and salinity changes in the observation wells located in the coastal zone should be continuously monitored and analyzed.
Keywords
groundwater discharges; aquifer; observation well; Masan Bay; re-circulated water; Darcy's method;
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