economical height of a dam is that height for which
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Cost of dam per unit storage is the minimum. Economic height of a dam can be theoretically defined as that height for which the cost of the dam per million cubic meter of storage is minimum.
The height of a dam is determined by preparing approximate estimates of the cost of several heights of dams at a given site.
It is done somewhat above and below the level, where the elevation storage curve shows a fairly high rate of increase of storage per meter of elevation. While at the corresponding elevation, the cross section of the dam site shows the length of the dam to be moderate.
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