Geology Reference
In-Depth Information
SIMULATION RESULTS
The model was simulated with the regional groundwater head and it was
compared with the observed data of 28 wells. The predicted regional head
generally follows the observed regional groundwater head. The regional
groundwater head for the months of January 2000 and January 2006 is
shown in Figs 4 and 5 respectively. In general, the simulated results indicate
that this aquifer system is stable under the present pumping rate, excepting
for a few locations along the coast where groundwater level has gone up to
1 m above sea level. The regional groundwater flow direction is towards
east. There is fairly good agreement between the computed and observed
heads. A comparison between the observed and computed head values for
the observation well no. 8 is shown in Fig. 8. The computed head values
mimic the observed head values.
Figure 4.
Computed regional ground-
water head (Jan 2000).
Figure 5.
Computed regional ground-
water head (Jan 2006).
Increase in Pumping
As groundwater is the major source of water for the cities from this region,
there has been increase in pumping over the years. Hence, it is essential to
know the behaviour of the system under increased hydrological stress. The
model was simulated for the increase in pumping of 10% along the coastal
region. The regional groundwater heads for the months of January 2000 and
January 2006 are shown in Figs 6 and 7, respectively. A comparison between
the observed and computed head values for the observation well no. 8 is
