Abstract: Muguandao reservoir is a proposed estuarine project and at the bottom are tidal deposits laden with salt water.In such a special geological and water environment,salt water in the deposits will intrude into the overlying fresh water,which will affect the water quality and normal operation of the reservoir.It is therefore important to identify the spatial extent of salt.Based on site survey,drilling and laboratory data,a quasi-3D model is established by linear interpolation in vertical direction,...