Combining water quality variability and flow simulation models to assess potential zones of groundwater used for drinking in the Pingtung Plain

• Main Authors: Wei-Jie Wang, 王煒傑
• Other Authors: Jui-Sheng Chen
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/64311671512713861088

碩士 === 國立中央大學 === 應用地質研究所 === 100 === Surface water is considerably lack in the Pingtung Plain.Thus, many residents massively extract groundwater to use, resulting that rapid decreases in groundwater levels, seawater intrusion and land subsidence. This study is to combine water quality variability and flow simulation models to assess potential zones of groundwater used for drinking in the Pingtung Plain. In water quality, multivariate indicator Kriging and water quality standard are used to spatially analyze groundwater quality in the Pingtung plain and to probabilistically delineate zones of proper drinking. In water quantity, the groundwater flow model, MODFLOW, was adopted to simulate groundwater drawdown for specified pumping rates. To reduce impacts on land subsidence by pumping, zones of pristine groundwater quality with minimizing pumping drawdown were the optimal locations to extract groundwater for drinking. The results of this study could offer agricultural administrators a sound guideline for obtaining clean and low-impact groundwater resources for drinking.