Based on Figure $1,$ Table $1$ and $2$

Irrigation waters will be supplied from the river in Figure $1.$

a$)$ Find the most appropriate point to divert the river, show it on Figure $1,$ explain the reason of why this point is the most appropriate point.

b$)$ Draw elements of irrigation and drainage systems on Figure $1,$ considering that maximum flow rate in secondary channels is around $1\frac{m^3}{s}$

$4$

c$)$Calculate design capacities of all sections of primary channels drawn in $3$b$)$

d$)$ Design the primary channel that is of maximum capacity $($manning coefficient is $0\mathrm{.}016).$ Draw the cross section of the channel designed, below.