As shown in the figure, the water surface elevation at section $2$ of the water vein overflowing the dam spillway is $34$ m$,$ and the elevation of the spillway surface with a $60\backslash$deg slope is $33\mathrm{.}5$ m$.$ Calculate the pressure and velocity at the spillway surface when the surface velocity Vs $=6$ m$/$sec at section $2.$ Also, find the water depth and velocity at section $1$ of the approach channel when the elevation of the reservoir bottom is $33\mathrm{.}05$ m$.$ However, assume an incompressible ideal fluid.