Abstract
This paper presents a review of the engineering techniques currently available for assessment of scour of rock by water. Such techniques are typically applied for design of unlined rock spillways or sections of channel downstream of chute or plunge spillways. The current techniques, while numerous, each apply to limited and specific conditions, which in this paper have been categorised into four distinguishable hydraulic conditions common to spillways. Commentary on the options relevant to design of Australian spillways is given, and important uncertainties and limitations in the existing techniques are highlighted.
