The result of mathematical groundwater modeling shows that - in Phrae groundwater basin - the
main groundwater flow is from the mountain area in the north to highland and foothills area in the
south and flows to the discharge area.The result of mathematical groundwater modeling shows that
in the upper Chao Phraya groundwater basin- the main groungwater flow is from the mountain area
in the north to highland and foothills area in the south and flows to discharge area. Flow direction
can be seen in Fig. 4.