Gully sidewall classification

Models to predict gully growth have concentrated on headward retreat. However, recent studies of gully erosion indicate that in many situations gully sidewalls are dominant sources of sediment. A classification scheme to group sidewalls according to the dominant processes has been developed and tested on a number of gullies in eastern Australia. Data indicating the relative importance of various processes are presented. The use of the system to estimate sidewall erosion rates and to predict major gully sediment sources is illustrated. -Authors