Qn$3$

The following table shows contour elevations and area between contours data for the plannet

hy dropower projet reservoir. The total storage volume $($live $+$ dead$)$ ic$,$ Up to Maximum Flood

Level$)$ required to meet the intended purpose in known to be $5000$ MCM $($million cubic metes$).$

Derive the elevation$-$capacity of the reservoir at each elevation usitg trapezoidal approach ims

design the most ecunomical single curvature ureh dum profile via thin ring theory. With

approximate symmetrical sides of $1H$:$2V$ the valley has a base width of $40m$ at $2157m($amsl$)$

Use a freeboard of Zm and for the profile design ise a I$0$m interval. Take of $-5$MPa.

Table $1$: Elevation and contour area datu