1978 Volume 1978 Issue 73 Pages 47-49,a2
The author intended to solve the differential equation of flood control of reservoir, by assuming that the curve of a natural reservoir surface area is represented by a parabola with respect to the head on weir. However, the assumption of such a curve is justified when the head change is not large until the head on weir becomes not zero. Also, he computed as an example the inflow and outflow discharges by means of the solution mentioned above.