Problem #$3($Basin Level Analysis$)$:

A city is supplied by water from a $1250$ hectare $(1$ ha $=10,000m^2)$ catchment area. The average water

consumption of the community is $50,000m^3$ day ${?}^{-1}.$ The annual precipitation in the region is $412$ cm $.$ A river

with an annual flow of $0\mathrm{.}35m^3{s}^{-1}$ originates in and flows out of the catchment area. If the net annual

groundwater outflow from the area is equivalent to a $16$ cm depth of water, what is the evapotranspiration

loss in cubic meters per year that, if exceeded, would cause a shortage of the water supply to the

community? Assume that the storage of water in the area at the beginning and at the end of the year is

equal.