Summarized groundwater monitoring well data in hydrogeological units of mountainous regions, Taiwan

In recent years, water scarcity problem is one of the biggest threats to human life around the world. In Taiwan, we also face the severe challenge on imbalance of water supply and demand of water resources. Since 1992, government has executed the groundwater monitoring networks in the plain areas. However, the land subsidence expanded due to the over pumping in the plain area For further demand of clean water resources, the groundwater exploration of mountainous regions becomes a crucial issue in Taiwan related to a substitute of water supply.

From 2010 to 2017, totally 104 boreholes were drilled for conducting investigation in each hydrogeological unit (HGU) by the integration of subsurface exploration technologies, including drilling, core inspection, geophysical logging, and hydraulic testing in the middle and southern mountainous region of Taiwan. Besides, 72 groundwater monitoring wells were also constructed with pumping testing. The summarized hydrogeological characteristics in each HGU are mentioned in this study, and the observed data, such as groundwater level and fluctuation, are available for relative water resources and engineering projects.