Answer:
water budget groundwater reservoir = 57 cm
Explanation:
given data
total surface area = 561 km²
land area = 552 km²
solution
we know that here budget equation that is amount of water flows in and out of the system
mean in flow - outflow
so
here inflow of water occurs during precipitation
so
water budget groundwater reservoir is = In flow - Out flow
so
water budget groundwater reservoir = 73 + 11 + 19 + 8 - ( 46 + 8 )
water budget groundwater reservoir = 57 cm