The rural groundwater monitoring system has been managed by Korea Rural Community Corporation (KRC) since 1998. There are two kinds of subsystems in it: the rural groundwater management subsystem (RGM) and the seawater intrusion monitoring subsystem (SIM). RGM has been operated to promote a sound and sustainable development of rural groundwater within the concerned area for groundwater quality and quantity. SIM has operated to protect hazard to the plants by usage of the saline water in coastal areas in which the shortage of fresh water for irrigation is a major problem for agriculture. Currently, a total of 283 monitoring wells have been placed; 147 wells in 79 municipalities for RGMS and 136 wells in 52 ones for SIM, respectively. Two subsystems commonly monitor three hydrophysical properties (level, temperature, and electrical conductivity) on an hourly basis every day. Generally, RGM simultaneously collects three properties using one multisensor per one well. SIM separately collects these ones using three discrete sensors, e.g. one sensor for level and two multisensors for temperature and electric conductivity, per one well. For SIM, one level sensor is placed above a transition zone. Two multisensors are designated to be placed onto and below transition zone, respectively. Monitored data are automatically transferred to the management center located in KRC. Data are opened to the public throughout website named to be the Rural Groundwater Net (www.groundwater.or.kr). Annual reports involving well logging and hydrochemical data of RGM and SIM have been published and distributed to the rural water management offi ce of each municipality. In addition, anyone interested about RGM an SIM can freely download these reports throughout the Rural Groundwater Net also.
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