2.5.1 Groundwater flow conceptual model representing
summer conditions
The
first MODFLOW model developed for the summer months (June-July-August)
using conditions from summer (JJA) of 2015 uses a North-South constant
head boundary of 3.5 mTAW based on
the analysis of heads in section 3.2.1. The East-West boundary is
defined as a general head boundary in reference to the mean lake stage
during this period. A constant pumping rate of 8,400
m3day-1
and an inflow rate of 6,080
m3day-1
has been used for this model, which represents the mean pumping rate and
inflow rate during this period. The mean observed lake stage is 6.9
mTAW. Leakance through pond bed is set as 0.39 day-1,
which is 30 % higher than the leakance of pond bed in winter
corresponding to the findings of impact of fluidity on hydraulic
conductivity of the pond bed.