Geomorphology of the Thomson River, Queensland: Overview and Comparison with Cooper Creek
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Lake Eyre Basin Rivers Monitoring Project Geomorphology of the Thomson River, Queensland: overview and comparison with Cooper Creek DEWNR Technical report 2015/52 Funding for these projects has been provided by the Australian Government through the Bioregional Assessment Programme. Geomorphology of the Thomson River, Queensland: overview and comparison with Cooper Creek A Report to the Department of Environment, Water and Natural Resources, South Australia; Lake Eyre Basin River Monitoring Project Author 1 1 Gresley A. Wakelin-King Wakelin Associates April, 2015 DEWNR Technical report 2015/52 Department of Environment, Water and Natural Resources GPO Box 1047, Adelaide SA 5001 Telephone National (08) 8463 6946 International +61 8 8463 6946 Fax National (08) 8463 6999 International +61 8 8463 6999 Website www.environment.sa.gov.au Disclaimer The Department of Environment, Water and Natural Resources and its employees do not warrant or make any representation regarding the use, or results of the use, of the information contained herein as regards to its correctness, accuracy, reliability, currency or otherwise. The Department of Environment, Water and Natural Resources and its employees expressly disclaims all liability or responsibility to any person using the information or advice. Information contained in this document is correct at the time of writing. This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. © Crown in right of the State of South Australia, through the Department of Environment, Water and Natural Resources 2015 ISBN: 978-1-925369-23-6 Preferred way to cite this publication Wakelin-King, G.A., 2015. Geomorphology of the Thomson River, Queensland: overview and comparison with Cooper Creek. Report by Wakelin Associates to the South Australian Department of Environment, Water and Natural Resources. Photo and image credits: Gresley Wakelin-King Download this document at: http://www.waterconnect.sa.gov.au Geomorphology of the Thomson River and Cooper Creek i Foreword The Department of Environment, Water and Natural Resources (DEWNR) is responsible for the management of the State’s natural resources, ranging from policy leadership to on-ground delivery in consultation with government, industry and communities. High-quality science and effective monitoring provides the foundation for the successful management of our environment and natural resources. This is achieved through undertaking appropriate research, investigations, assessments, monitoring and evaluation. DEWNR’s strong partnerships with educational and research institutions, industries, government agencies, Natural Resources Management Boards and the community ensures that there is continual capacity building across the sector, and that the best skills and expertise are used to inform decision making. Sandy Pitcher CHIEF EXECUTIVE DEPARTMENT OF ENVIRONMENT, WATER AND NATURAL RESOURCES Geomorphology of the Thomson River and Cooper Creek ii Author’s Acknowledgements The Lake Eyre Basin River Monitoring project was funded by the Australian Government through the Department of the Environment, and administered by the South Australian Department of Environment, Water, and Natural Resources. Tom Carrangis and Andy Harrison provided project management. Sandra Mann provided able assistance in the field. I would like to thank the landholders at the following stations for permission to traverse their country: Camoola Park, Dillulah, Durham Downs, Goodberry Hills, Shandon Vale and Yanburra, and I thank Santos Ltd. for permission to use their access tracks. The communities and councils of Longreach, Muttaburra, Lake Dunn make town commons and camping areas available for travellers. Local information was freely shared by Angus Emmott, Graham Moffatt, Val Norris, David Phelps, Kerry Robinson, and Deon, Alan, and Laurel Stent Smith. Sinclair Knight Merz Pty Ltd (Jacobs) are thanked for their helpful review of the draft. Funding for these projects has been provided by the Australian Government through the Department of the Environment Office of Water Science. See www.bioregionalassessments.gov.au for further information. Frontispiece: Four places representing key locations in the Cooper/Thomson catchment: Top left, Galina Waterhole (Cooper Creek); top centre, the Jundah scarp; top right, Muttaburra Broadwater (Thomson River); bottom, Lake Dunn outflow creek. Photo credits: Gresley Wakelin-King, 2014. Geomorphology of the Thomson River and Cooper Creek iii Table of Contents Executive Summary .............................................................................................................. 6 1 Introduction .................................................................................................................... 8 1.1 About This Study ................................................................................................................. 10 1.1.1 Methods ........................................................................................................................ 12 1.2 Locations ....................................................................................................................... 13 2 Cooper/Thomson Catchment ...................................................................................... 17 2.1 Geology and Physiography ............................................................................................ 17 2.2 Valley Width and Downvalley Gradient .......................................................................... 22 2.3 Valley Margins ............................................................................................................... 25 2.4 Cooper Creek Surface Hydrology .................................................................................. 29 2.5 Cooper/Thomson Land Use ........................................................................................... 31 3 Review of Geomorphological Studies of Cooper Creek ............................................... 35 4 Description: Reach Characterisations ......................................................................... 41 4.1 Cooper Plain – the Reference Reaches ......................................................................... 41 4.2 Escarpment and Uplands (including Lake Dunn) ........................................................... 48 4.3 The Tributaries (near Muttaburra) .................................................................................. 53 4.4 The Tributary Aramac Creek .......................................................................................... 55 4.5 The Upper Thomson River A (Muttaburra) ..................................................................... 57 4.6 The Upper Thomson River B (downvalley from the Aramac Creek confluence) ............. 61 4.7 The Lower Thomson River ............................................................................................. 67 5 Thomson River: Overview and Comparison ................................................................ 72 6 Conclusions ................................................................................................................ 77 7 References ................................................................................................................. 81 Table of Figures Frontispiece: Four places representing key locations in the Cooper/Thomson catchment: ................................................. iii Fig. 1 Rivers of the Lake Eyre Basin, and underlying coal-bearing geological basins. ........................................................ 8 Fig. 2 Wetted vertic soils slake to aggregates. .................................................................................................................. 13 Fig. 3 Place-names in the Cooper/Thomson catchment. .................................................................................................. 14 Fig. 4 Reach groups as defined in the present report. ...................................................................................................... 15 Fig. 5 Schematic geological cross-section of the study area. See text. ............................................................................. 17 Fig. 6. Digital elevation model (DEM) of Cooper Creek and Thompson River catchments ............................................... 18 Fig. 7 Solid geology map of the Cooper/Thomson catchment. .......................................................................................... 19 Fig. 8 Some rocks of the study area. ................................................................................................................................. 19 Fig. 9. Google Earth image in real colour of Cooper Creek and Thompson River. ............................................................ 20 Geomorphology of the Thomson River and Cooper Creek 4 Fig. 10. Physiographic units of the Cooper Creek and Thompson River catchments. ....................................................... 21 Fig. 11 Looking northeast towards the scarp. .................................................................................................................... 22 Fig. 12 Longitudinal profile of Cooper Creek and Thomson River. .................................................................................... 24 Fig. 13 Gibber hillslopes of the Eromanga Lowlands. ......................................................................................................