Heron Island spoil dump

Abstract

The Heron Island harbour was re-dredged between September and November 1987 and a swing basin for vessels and a jetty were also constructed at that time. Following concern about the potential effects of the dredging operation, a multi-disciplinary monitoring program was initiated. This report covered the investigation into the nature and distribution of sediments on the reef flat and in the spoil dump, the conditions responsible for the erosion of the spoil dump and the quantity of dredge material in the spoil dump.