A Simple Technique for Estimating the Recovery Rate of a Subtropical Estuarine System After a Flood Event
MetadataShow full item record
The Fitzroy River is one of Australia's largest river systems, with an estuarine section extending 60 km from its mouth to a tidal limiting barrage. The Fitzroy River, whose catchment is 142450 km2 experiences annual short-lived flooding as a result of intermittent heavy summer rainfall events. This study revealed that the Fitzroy River estuary behaves as an enclosed bay as it does not experience a freshwater inflow after the cessation of a flood event. There was a need to develop a predictive estuarine recovery graph as typical formulas, (such as the fraction of freshwater) did not apply. Implications of this simplistic (salinity recovery) graph will lead to a better understanding and knowledge base for both the independent and commercial fisheries. The reason for this being that a during a flood event, the majority of freshwater species (upstream of the barrage) and estuarine-dependant (downstream) species are washed into the adjacent Pacific Ocean. The re-migration of both the fresh and estuarine-dependant species after the flood event is closely related to the rate of salinity recovery.
Journal of Coastal Research
Copyright 2006 CERF. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.