Assessment of Subsurface Condition of Peat Soil due to Brackish Groundwater Seepage

Abstract

The purpose of this assessment is to assess the subsurface condition of peat soil due to brackish groundwater seepage along drainages using a numerical method. Visual MODFLOW is applied to conceptualize a condition in the study area and to produce outcomes related to the objectives of the study. The results of the simulation show there is only a small portion of high salt concentration along the drainage. The migration of salt concentration is mostly affected by the groundwater head and velocity vectors of the aquifer materials. Meanwhile, most of the other places in the study area receive a low salt concentration. Therefore, the impact of brackish groundwater on the environment is not significant since the salt concentration is low in most of the study area.