Use level pool routing to calculate the outflow, using a three hour time step, from the

following system up to and including $6$ hours given the following inflow hydrograph:

Table $2.$ Inflow data $(\frac{m^3}{s})$

The reservoir is shown in Figure $2$ and is rectangular in plan with an area of

$10000m^2$ and has vertical walls.

The outflow from the reservoir is governed by a $10$ m weir with the relationship:

$Q=1\mathrm{.}8L{h}^{\frac{3}{2}}$

where h is the depth of water in the reservoir above the datum.

Area $=10000m^2$

Figure $2.$ Plan and cross section of reservoir