Akademik Veri Yönetim Sistemi
FRESENIUS ENVIRONMENTAL BULLETIN, cilt.31, sa.5, ss.5307-5314, 2022 (SCI-Expanded)
Seawater intrusion is one of the most important processes that damage groundwater quality in the coastal regions. Groundwater overexploitation in the coastal aquifer of the Bosaso Plain has resulted in seawater intrusion problem. In this study we present a two-dimensional density -dependent numerical model developed with the SEAWAT code, which is aimed to predict the extent of seawater intrusion by different groundwater pumping scenarios. After model development the SEAWAT model was calibrated using both average value of heads and total dissolved solids (TDS) concentration for the 2013 field data. Three scenarios were simulated to understand the effects of pumping to the extent of seawater intrusion for a period 27 years. The model results show that seawater intrusion significantly affects the groundwater concentrations near the coastline and demonstrated high levels of TDS. The predicted results reveal that increasing pump rate will move the seawater intrusion about 6.2 km inland by the year 2040. Results also revealed that a 50% reduction in the pump rate will bring relief to the aquifer by protecting fresh groundwater and preventing any further seawater intrusion. This study is a beneficial tool for decision makers to develop a management strategy for efficient groundwater exploitation in Bosaso plain.