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Aspects of Modelling the Daly River

Valentine, E (2008). Aspects of Modelling the Daly River. In: 31st Hydrology and Water Resources Symposium, Adelaide, 14-17 April 2008.

Document type: Conference Paper

IRMA ID 78668828xPUB6
Author Valentine, E
Title Aspects of Modelling the Daly River
Conference Name 31st Hydrology and Water Resources Symposium
Conference Location Adelaide
Conference Dates 14-17 April 2008
Conference Publication Title Proceedings: Water Down Under 2008
Place of Publication Modbury
Publisher Institute of Engineers Australia
Publication Year 2008
ISBN 0858257351   (check CDU catalogue open catalogue search in new window)
Start Page 875
End Page 884
Total Pages 10
HERDC Category E1 - Conference Publication (DEST)
Abstract The tropical rivers and groundwater systems of Australia are estimated to contain about 70% of the nation's fresh water resources. There has consequently been interest in their development which has recently been influenced by increasing concerns for water supply and the river systems in southern Australia. However, there is considerable uncertainty surrounding actual water availability and the effects of exploitation on the unique and relatively un-impacted river systems of the tropical Northern Territory. The Northern Territory Government is considering plans to convert pastoral leases in the Daly River region to agriculture. Prior to this development it is important to understand the water and sediment dynamics of the system and the potential impacts on the river of water abstraction for irrigation. This is one of the major river systems of northern Australia and there is considerable debate about the effects that potential development of the river basin may have on the river channel and floodplain. The Daly River has therefore become the focus of a study funded through the TRaCK (Tropical Rivers and Coastal Knowledge) consortium. Observations suggest that there has been considerable siltation in the estuary since 1880, and there are indications that there are instabilities in the channel plan form. The question as to whether these instabilities are driven by hydrological or anthropogenic influences from previous limited agricultural development is crucial to the decision on future development and how it should be managed. A numerical model of the hydrodynamics and morphology of the Daly River is being constructed to help determine the transport and fate of sediments on the floodplain and in the channel. This paper presents an overview of some model approaches being applied to the Daly River.
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Created: Wed, 22 Apr 2009, 11:20:32 CST by Sarena Wegener