Applied Hydraulics #$4\mathrm{.}1\mathrm{.}4.$

The flow rate $($water; $20C)$ through a smooth concrete pipeline $($Figure P$4\mathrm{.}1\mathrm{.}2)$ is $1\mathrm{.}2\frac{m^3}{s}.$ Determine the water surface elevation of the upstream reservoir $(A)$ if the water surface elevation of the downstream reservoir $(B)$ is $600m$ and given in the table below.