2. Material and Methods
In
this study, changes in hydraulic gradient due to natural recharge, and
changes in hydraulic conductivity of pond bed due to temperature-induced
water viscosity were quantified. Two groundwater flow models were
developed to identify variations in the average linear vertical flow
velocities of water with variations in hydraulic conductivity of pond
bed occurring over time. This study used observed data from St-André,
Belgium to understand the water movement below the infiltration basin
and the seasonal variation of hydraulic conductivity under different
seasonal conditions. Additionally, it was assumed that the infiltration
ponds are connected to the groundwater, therefore there is no
unsaturated zone between the ponds and the groundwater table.