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Blight presented the Master Beach profile equation in 1994 (ref. 1).

The Master Profile Equation relates the beach elevation () at any location along the beach to:

The distance (chainage) along the beach ().

The total beach fall ().

The total beach length ().

A shape factor ().

Equation2: Master Profile Equation

Initial work by Blight suggested a constant beach shape factor, .

Subsequent work by McPhail suggests a variable shape factor, , as a function of the beach length, :


A shape factor of less than one generates a convex beach.

A shape factor of more than one generates a concave beach.


1.Blight GE. Jan 1994. "The Master Profile for Hydraulic Fill Tailings Beaches". Proceedings of the Institution of Civil Engineering (UK). pp27 – 40.