Annual entitlement for the Condamine floodplain irrigators – is it really working?

Presentation


Dafny, Elad. 2015. "Annual entitlement for the Condamine floodplain irrigators – is it really working?" Grundy, Paul (ed.) 2nd Australian Cotton Research Conference 2015: Science Securing Cotton's Future. Toowoomba, Australia 08 - 10 Sep 2015 Australia.
Paper/Presentation Title

Annual entitlement for the Condamine floodplain irrigators – is it really working?

Presentation TypePresentation
Authors
AuthorDafny, Elad
EditorsGrundy, Paul
Journal or Proceedings TitleProceedings of the 2nd Australian Cotton Research Conference 2015
Number of Pages1
Year2015
Place of PublicationAustralia
Web Address (URL) of Paperhttp://www.cottonresearch.org/Welcome
Conference/Event2nd Australian Cotton Research Conference 2015: Science Securing Cotton's Future
Event Details
2nd Australian Cotton Research Conference 2015: Science Securing Cotton's Future
Event Date
08 to end of 10 Sep 2015
Event Location
Toowoomba, Australia
Abstract

Rigorous analysis of monitoring bores hydrographs demonstrates that since 2008 the water table in the central part of the Condamine Floodplain has stabilized, ending several decades of a consistent decline in groundwater levels. It seems that the stabilization is a result of the 2007 revised water pumping restrictions scheme in the Condamine Groundwater Management Area (CGMA). Prior to 2007, water allocations were set only at the heart of the ‘cotton land’, between Pampas and Macalister, where the focal of groundwater drawdowns was observed. However, this measure had no noticeable impact on groundwater levels. From that year onward, water allocations were also set at the peripheral parts of the CGMA, including the southern part (‘sub-area 4’). In this area, groundwater from the upper alluvial valleys, as well as large parts of the basaltic ridges, merge and flow laterally toward the central alluvial aquifer. In other words, pumping reduction in the southern area resulted in an increase in the lateral flow toward the central area, which act to compensate and prevent further drawdowns. These observations emphasis the need in integral water management for the entire floodplain, including target values for sustainable yield for different zones within the basin. Further monitoring and modelling could assist this task.

Keywordsgroundwater; Condamine ; water allocations; annual entitlements
ANZSRC Field of Research 2020370799. Hydrology not elsewhere classified
410406. Natural resource management
Public Notes

Abstract only published in Proceedings.
Copyright 2015 author. This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source.

Byline AffiliationsNational Centre for Engineering in Agriculture
Institution of OriginUniversity of Southern Queensland
Funding source
Grant ID
CRDC project 11-12FRP00044
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