Temporal trends of groundwater levels in the border rivers alluvia

Dafny, Elad (2014) Temporal trends of groundwater levels in the border rivers alluvia. Technical Report. University of Southern Queensland , Toowoomba, Australia. [Report]

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This report analyses the groundwater levels trends in the Queensland section of the Border Rivers alluvia (Macintyre and Weir Rivers), downstream of Goondiwindi to Mungindi. The aquifer in this area is rather thin and contains relatively salty water. Large portion of this area is currently utilized for irrigated and dryland cropping; storages and channels were erected to support the agriculture development. Deep-drainage and rising groundwater levels, which were identified in previous studies and were attributed to the agricultural activities, were re-investigated and constrained.
Major findings are:
• Stable groundwater levels at the outskirts of the floodplain;
• On-going decrease in groundwater levels near Goondiwindi;
• Induced streambed recharge during the 2010-2013 high flow period along several stream sections (but not in others);
• Rising groundwater levels near many irrigated lands which were consistently associated with deep-drainage, in the order of 10-40 mm/yr;
• Induced deep-drainage and leakiness under red-soils in two localities near South Talwood.
It is recommended to increase monitoring frequency at those bores where dynamic changes were identified, especially where the groundwater level is very shallow.

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Item Type: Report (Technical Report)
Item Status: Live Archive
Additional Information: Copyright 2014 University of Southern Queensland. 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.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences
Date Deposited: 08 May 2015 02:00
Last Modified: 06 Nov 2017 23:41
Uncontrolled Keywords: groundwater; deep-drainage; border rivers; monitoring
Fields of Research : 04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040603 Hydrogeology
07 Agricultural and Veterinary Sciences > 0799 Other Agricultural and Veterinary Sciences > 079901 Agricultural Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
09 Engineering > 0905 Civil Engineering > 090509 Water Resources Engineering
Socio-Economic Objective: D Environment > 96 Environment > 9606 Environmental and Natural Resource Evaluation > 960608 Rural Water Evaluation (incl. Water Quality)
Funding Details:
URI: http://eprints.usq.edu.au/id/eprint/26304

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