Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/127545
Type: Thesis
Title: Pipe Dreams: The Mannum-Adelaide Pipeline and its effects on the aquatic environment of the Upper River Torrens catchment, South Australia
Author: Cox, A.
Issue Date: 2004
School/Discipline: School of Physical Sciences
Abstract: In order to assess nutrient and sediment pollution in the upper River Torrens catchment a palaeoenvironmental investigation from sediments in Gumeracha Weir was undertaken. The geochemistry of core samples from Gumeracha Weir, was compared to suspended sediment samples taken from tributaries upstream of the weir, samples of Murray River water and also from sites with various land use types scattered throughout the upper River Torrens catchment. Sediment accumulation rates in the Gumeracha Weir appear to have increased in the last 50 years. A major source of sediments in Gumeracha Weir is the River Murray, via water being diverted into the river through the Mannum-Adelaide pipeline. A second important source, associated with high silica sediments deposited in high energy flows, originated from in the Torrens catchment. No single type of land use, (eg roads or pasture) could be identified as the source of these sediments. Through diatom analysis a history of changes in water chemistry was also established. The results indicate that there has been a significant increase in pH from approximately pH 7.6 units in samples pre-pipeline to an average of pH 8.4 units at present. The decline in Rhicosphenia abbrevata indicates that turbidity has also increased markedly since the commencement of River Murray water input. It was therefore determined that the divergence of River Murray water into the upper River Torrens catchment has consequently added to an increase in both sediment and nutrient concentrations of the River Torrens.
Dissertation Note: Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2004
Where: River Torrens catchment, Mt Lofty Ranges, South Australia
Keywords: Honours; Geography; river catchment; weir; palaeoenvironment; sediments; nutrients; geochemistry; diatoms; environmental impact
Description: This item is only available electronically.
Provenance: This electronic version is made publicly available by the University of Adelaide in accordance with its open access policy for student theses. Copyright in this thesis remains with the author. This thesis may incorporate third party material which has been used by the author pursuant to Fair Dealing exceptions. If you are the author of this thesis and do not wish it to be made publicly available, or you are the owner of any included third party copyright material you wish to be removed from this electronic version, please complete the take down form located at: http://www.adelaide.edu.au/legals
Appears in Collections:School of Physical Sciences

Files in This Item:
File SizeFormat 
CoxA2004_Hons.pdf28.26 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.