Abstract
This paper examines the management issues relating to the potential closure of the mouth of Australia's largest river. The importance of maintaining the river mouth is outlined, together with the implications of restricted river flow and the management response following the most recent closure of the mouth in 1981. One of the major unresolved issues is the question of responsibility and funding, which has arisen because of overlapping jurisdictions on either side of the river mouth and a lack of jurisdiction f or the mouth itself, which is an administrative boundary.