The capacity of the pond is ...
Published by Prem Baboo, Researcher at www.researchGate.net
The capacity of the pond is determined from a contour survey of the site at which the pond is to be located. From the contour plan of the site the capacity is calculated for different stages using the trapezoidal or simpson’s rule. For this purpose, the area enclosed by each contour is measured using a planimeter. According to the trapezoidal rule, the volume V between two contours at an
interval H and having areas A1 and A2 is given by,
V = H/2(A1+A2)
Using Simpson’s rule the volume between any odd number of contours is given
by,
V= H/3(Twice of area of odd contours + 4 times are of even contours +Area of the first and last contours)
This formula is also known as the prismodial rule. For using this equation, the number of contours should be odd i.e. the number of intervals considered should be even.