DOCSLIB.ORG

Hydrogeology of the Beetaloo GBA Region Technical Appendix for the Geological and Bioregional Assessment: Stage 2

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Hydrogeology of the Beetaloo GBA Region Technical Appendix for the Geological and Bioregional Assessment: Stage 2 Hydrogeology of the Beetaloo GBA region Technical appendix for the Geological and Bioregional Assessment: Stage 2 2020 A scientific collaboration between the Department of Agriculture, Water and the Environment, Bureau of Meteorology, CSIRO and Geoscience Australia The Geological and Bioregional Assessment Program The Geological and Bioregional Assessment Program will provide independent scientific advice on the potential impacts from development of selected unconventional hydrocarbon plays on water and the environment. The geological and environmental data and tools produced by the Program will assist governments, industry, landowners and the community to help inform decision making and enhance the coordinated management of potential impacts. The Program is funded by the Australian Government Department of the Environment and Energy. The Department of the Environment and Energy, Bureau of Meteorology, CSIRO and Geoscience Australia are collaborating to undertake geological and bioregional assessments. For more information, visit http://www.bioregionalassessments.gov.au. Department of the Environment and Energy The Department designs and implements Australian Government policy and programs to protect and conserve the environment, water and heritage, promote climate action, and provide adequate, reliable and affordable energy. For more information visit http://www.environment.gov.au. Bureau of Meteorology The Bureau of Meteorology is Australia’s national weather, climate and water agency. Under the Water Act 2007, the Bureau is responsible for compiling and disseminating Australia's water information. The Bureau is committed to increasing access to water information to support informed decision making about the management of water resources. For more information, visit http://www.bom.gov.au/water/. CSIRO Australia is founding its future on science and innovation. Its national science agency, CSIRO, is a powerhouse of ideas, technologies and skills for building prosperity, growth, health and sustainability. It serves governments, industries, business and communities across the nation. For more information, visit http://www.csiro.au. Geoscience Australia Geoscience Australia is Australia’s national geoscience agency and exists to apply geoscience to Australia’s most important challenges. Geoscience Australia provides geoscientific advice and information to the Australian Government to support current priorities. These include contributing to responsible resource development; cleaner and low emission energy technologies; community safety; and improving marine planning and protection. The outcome of Geoscience Australia’s work is an enhanced potential for the Australian community to obtain economic, social and environmental benefits through the application of first-class research and information. For more information, visit http://www.ga.gov.au. ISBN-PDF 978-1-76003-277-7 Citation Evans TJ, Radke BM, Martinez J, Buchanan S, Cook SB, Raiber M, Ransley TR, Lai ÉCS, Skeers N, Woods M, Evenden C, Cassel R and Dunn B (2020) Hydrogeology of the Beetaloo GBA region. Technical appendix for the Geological and Bioregional Assessment: Stage 2. Department of the Environment and Energy, Bureau of Meteorology, CSIRO and Geoscience Australia, Australia. Authorship is listed in relative order of contribution. On 1 February 2020 the Department of the Environment and Energy and the Department of Agriculture merged to form the Department of Agriculture, Water and the Environment. Work for this document was carried out under the then Department of the Environment and Energy. Therefore, references to both departments are retained in this report. Copyright © Commonwealth of Australia 2020 With the exception of the Commonwealth Coat of Arms and where otherwise noted, all material in this publication is provided under a Creative Commons Attribution 4.0 International Licence https://creativecommons.org/licenses/by/4.0/. The Geological and Bioregional Assessment Program requests attribution as ‘© Commonwealth of Australia (Geological and Bioregional Assessment Program http://www.bioregionalassessments.gov.au)’. Disclaimer The information contained in this report is based on the best available information at the time of publication. The reader is advised that such information may be incomplete or unable to be used in any specific situation. Therefore, decisions should not be made based solely on this information or without seeking prior expert professional, scientific and technical advice. The Geological and Bioregional Assessment Program is committed to providing web accessible content wherever possible. If you are having difficulties with accessing this document please contact [email protected]. Cover photograph Mataranka Thermal Pools, Beetaloo GBA extended region, October 2018. Credit: Alf Larcher (CSIRO) Element: GBA-BEE-2-381 v20210630 Executive summary This investigation reviews the existing datasets and literature to develop a regional hydrogeological conceptualisation of the Beetaloo Geological and Bioregional Assessment region. The region is located approximately 500 km south-east of Darwin, in the Northern Territory, Australia, and covers approximately 28,000 km2. The hydrogeology is characterised by a complex series of stacked sedimentary basins that include the Beetaloo Sub-basin (Roper Group); the Georgina, Wiso, and Daly basins; and the Carpentaria Basin. Within these basins, four primary groundwater and aquitard sub-systems have been identified. A brief summary of these is provided below. Mesoproterozoic Roper Group: The group is host to the main hydrocarbon plays of the Velkerri and Kyalla formations. While the Roper Group typically exhibits aquitard properties, the Moroak Sandstone can locally act as a fractured rock aquifer near structures. It has produced groundwater inflows to petroleum wells during drilling. Due to depth and hypersaline conditions, the Moroak Sandstone is not utilised as a groundwater resource within the Beetaloo GBA region. Outside the Beetaloo GBA region, however, where these rocks occur near surface, the Moroak and other sandstones in the Roper Group are utilised and may also be a source aquifer for some springs. Neoproterozoic units: Overlying the Roper Group are the Jamison sandstone aquifer, Hayfield mudstone and Kiana Group. Outside the region the Jamison sandstone is utilised as a groundwater source. While this unit is being considered as an option for water supply for future petroleum drilling operations within the region, a couple of water quality samples suggest at least parts of it could be highly saline. The overlying Hayfield mudstone is a regional aquitard found across the majority of the Beetaloo GBA region, except for small regions in the extreme north and south. The Kiana Group consists of Bukalara Sandstone and Cox Formation. The Bukalara Sandstone has a discontinuous distribution, within and adjacent to, the Beetaloo GBA region. This unit is a good local aquifer where it outcrops to the north of the region. The Bukalara Sandstone is being considered as an option for future water supplies. Limited information from petroleum wells drilled within the Beetaloo GBA region suggests that parts of the Bukalara Sandstone have potentially relatively good hydraulic conductivity and porosity. There is no information on water quality. Antrim Plateau Volcanics: While considered to be a regional aquitard across much of the Beetaloo GBA region, it is used as a local aquifer where groundwater supply from the Cambrian Limestone Aquifer is not sufficient. Cambrian Limestone Aquifer: The Cambrian Limestone Aquifer (CLA) is the most important aquifer in the Beetaloo GBA region, due to its relatively shallow nature, high yields and good water quality. The CLA stratigraphy is complex, karstic in nature and includes a number of variably hydraulically connected sequences: The Cambrian Antrim Plateau Volcanics underlies the CLA. Hydrogeology of the Beetaloo GBA region | i There are two regional groundwater flow systems recognised in the CLA: groundwater flow from the Wiso Basin into the Daly Basin, and groundwater flow from the Georgina Basin into the Daly Basin. Inferred regional groundwater flow for both systems are north-westward, across the Beetaloo GBA region, into the Daly Basin and discharges at spring complexes such as Mataranka and Flora River Springs located outside the GBA region. Groundwater flow on a more local scale is, however, poorly defined. Within the CLA, the velocity of groundwater flow can be highly variable and is in part dependent on the degree of connectivity and size of karst porosity. Cretaceous Carpentaria Basin and Cenozoic sediments: These are generally unsaturated and provide only limited quantities of low to moderately saline groundwater. Within the Beetaloo GBA region, local perched aquifers in the Cenozoic could potentially be used as a water source by vegetation. Hydraulic connectivity: Hydraulic connectivity and potential impact propagation between the prospective Roper Group units and the upper aquifers are expected to be limited by variably extensive and thick aquitards, particularly the Hayfield mudstone and Antrim Plateau Volcanics. The degree of inter-aquifer connectivity is not well characterised. The thickness of Carpentaria Basin sedimentary rocks and distribution of near-surface karst have a bearing on degree of leakage/recharge that can reach the underlying CLA. This has implications for hazards such as spills, because recharge/leakage is impeded where overlying
Load more

Recommended publications
  • Beetaloo Stage 2
    Geological and environmental baseline assessment for the Beetaloo GBA region Geological and Bioregional Assessment: Stage 2 2020 A scientific collaboration between the Department of Agriculture, Water and the Environment, Bureau of Meteorology, CSIRO and Geoscience Australia The Geological and Bioregional Assessment Program The Geological and Bioregional Assessment Program will provide independent scientific advice on the potential impacts from development of selected unconventional hydrocarbon plays on water and the environment. The geological and environmental data and tools produced by the Program will assist governments, industry, landowners and the community to help inform decision making and enhance the coordinated management of potential impacts. The Program is funded by the Australian Government Department of the Environment and Energy. The Department of the Environment and Energy, Bureau of Meteorology, CSIRO and Geoscience Australia are collaborating to undertake geological and bioregional assessments. For more information, visit http://www.bioregionalassessments.gov.au. Department of the Environment and Energy The Department designs and implements Australian Government policy and programs to protect and conserve the environment, water and heritage, promote climate action, and provide adequate, reliable and affordable energy. For more information visit http://www.environment.gov.au. Bureau of Meteorology The Bureau of Meteorology is Australia’s national weather, climate and water agency. Under the Water Act 2007, the Bureau is responsible for compiling and disseminating Australia's water information. The Bureau is committed to increasing access to water information to support informed decision making about the management of water resources. For more information, visit http://www.bom.gov.au/water/. CSIRO Australia is founding its future on science and innovation.
    [Show full text]
  • Natural Values and Resource Use in the Limmen Bight
    NATURAL VALUES AND RESOURCE USE IN THE LIMMEN BIGHT REGION © Australian Marine Conservation Society, January 2019 Australian Marine Conservation Society Phone: +61 (07) 3846 6777 Freecall: 1800 066 299 Email: [email protected] PO Box 5815 West End QLD 4101 Keep Top End Coasts Healthy Alliance Keep Top End Coasts Healthy is an alliance of environment groups including the Australian Marine Conservation Society, the Pew Charitable Trusts and the Environment Centre of the Northern Territory. Authors: Chris Smyth and Joel Turner, Centre for Conservation Geography Printing: Printed on 100% recycled paper by IMAGE OFFSET, Darwin. Maps: Centre for Conservation Geography This report is an independent research paper prepared by the Centre for Conservation Geography commissioned by, and for the exclusive use of, the Keep Top End Coasts Healthy (KTECH) alliance. The report must only be used by KTECH, or with the explicit permission of KTECH. The matters covered in the report are those agreed to between KTECH and the authors. The report does not purport to consider exhaustively all values of the Limmen Bight region. The authors do not accept liability for any loss or damage, including without limitation, compensatory, direct, indirect, or consequential damages and claims of third parties that may be caused directly or indirectly through the use of, reliance upon or interpretation of the contents of the report. Cover photos: Main - Limmen River. Photo: David Hancock Inset (L-R): Green Turtle, Recreational fishing is an important leisure activity in
    [Show full text]
  • Springs of the Mataranka Area 4
    THE BIG PICTURE SPRINGS OF THE MATARANKA AREA 4. THE SWAMP Timor Sea A cavernous limestone aquifer extends The large swampy area located on the south side of across a large part of the Northern Territory the Roper River also owes it’s existence to a and into Queensland. The springs at The Mataranka area is notable for its many springs. geological structure that has caused the aquifer to DARWIN Mataranka are one of several outlet points for become shallower and to thin out towards the Roper the aquifer. Other big springs are found on 295000mE This map shows the location of the main springs and other groundwater discharge features. River (see the cross-section). This has resulted in a the Flora, Katherine and Daly Rivers and in broad area underlain by a shallow watertable and Queensland on the Lawn Hill Creek and It explains why the springs are there and describes some of their characteristics. zones of seepage. Extensive tufa deposits formed there because a ridge of bedrock located downstream Daly River Springs KATHERINE Gulf Gregory River. At Mataranka the water of originates from areas to the southeast as far of the seepage zone, ponded the water in a similar Flora River Springs MATARANKA Carpentaria away as the Barkly Tablelands and from the manner to the rock bars in streams as described in 300000mE northwest as far as the King River. Qa1 the note on tufa formation. The ridge formed a base for tufa to accumulate. Tufa dams merged and grew - Waterhouse Cmt over older ones, eventually forming a continuous sheet of limestone.
    [Show full text]
  • A New Freshwater Catfish (Pisces: Ariidae) from Northern Australia
    Rec. West. Aust. Mus. 1988,14(1): 73-89 A new freshwater catfish (Pisces: Ariidae) from northern Australia PatriciaJ. Kailola* and Bryan E. Pierce* Abstract A new species of fork-tailed catfish is described on the basis of 31 specimens collected in northern Australia between the Fitzroy River (Western Australia) and the Mitchell River (Queensland). Arius midgleyi sp. novo grows to at least 1.3 m TL and is distinguished from other Australo-Papuan ariids by a combination of charac­ ters including snout shape, barbel length, eye size, tooth arrangement and gill raker number and position. Comparison is made with other ariid species occurring in northern Australian rivers, including the morphologically similar A. leptaspis (Bleeker). Introduction The Timor Sea and Gulf of Carpentaria drainage systems (Lake 1971) approx­ imately represent the Leichhardtian zoogeographic region of Whitley (1947). The rainfall pattern in this region is dominated by the wet monsoon (occurring within the period November to April). Most rivers here traverse a flat coastal plain about 15 km wide before reaching the sea (Lake 1971). These rivers commonly possess wide flood plains and low gradients, often contracting to a chain of waterholes during the dry season; some (Gregory River; Fitzroy to Daly Rivers) have reaches of rapids or very deep gorges. The average annual discharge from this region is 69000 billion litres (Lake 1971), most of it occurring during the wet season. Five of Australia's 18 species of fork-tailed catfishes (Ariidae) are common in this northern region, yet were overlooked by Whitley (1947) and Iredale and Whitley (1938). The members of this family, which is distributed circumglobally in the tropics and subtropics, may inhabit the sea, rivers within tidal influence, or fresh waters.
    [Show full text]
  • Testudines: Chelidae) of Australia, New Guinea and Indonesia
    Zoological Journal of the Linnean Society, 2002, 134, 401–421. With 7 figures Electrophoretic delineation of species boundaries within the genus Chelodina (Testudines: Chelidae) of Australia, New Guinea and Indonesia ARTHUR GEORGES1*, MARK ADAMS2 and WILLIAM McCORD3 1Applied Ecology Research Group, University of Canberra, ACT 2601, Australia 2Evolutionary Biology Unit, South Australian Museum, North Terrace, Adelaide, SA 5001, Australia 3East Fishkill Animal Hospital, 285 Rt 82, Hopewell Junction NY 12533, USA Received February 2001; revised and accepted for publication June 2001 A total of 281 specimens of long-necked chelid turtles (Chelodina) were obtained from drainages of Australia, Papua New Guinea and the island of Roti in Indonesia. Ten diagnosable taxa were identified using allozyme profiles at 45 presumptive loci. Chelodina expansa, C. parkeri, C. rugosa and C. burrungandjii are in a Group A clade, C. longi- collis, C. novaeguineae, C. steindachneri, C. pritchardi and C. mccordi are in a Group B clade, and C. oblonga is in a monotypic Group C clade, with each clade thought to represent a distinct subgenus. Chelodina siebenrocki is syn- onymised with C. rugosa. An eleventh taxon, C. reimanni, could not be distinguished from C. novaeguineae on the basis of allozyme profiles, but it is morphologically distinct. Its status is therefore worthy of further investigation. Three instances of natural hybridization were detected. Chelodina rugosa and C. novaeguineae hybridize in the Gulf country of Queensland, with evidence of backcrossing to C. novaeguineae. Chelodina longicollis and C. novaeguineae hybridize in central coastal Queensland, and C. rugosa and C. burrungandjii hybridize along their zone of contact in the plateau escarpment streams and pools.
    [Show full text]
  • Critical Australian Indigenous Histories
    Transgressions critical Australian Indigenous histories Transgressions critical Australian Indigenous histories Ingereth Macfarlane and Mark Hannah (editors) Published by ANU E Press and Aboriginal History Incorporated Aboriginal History Monograph 16 National Library of Australia Cataloguing-in-Publication entry Title: Transgressions [electronic resource] : critical Australian Indigenous histories / editors, Ingereth Macfarlane ; Mark Hannah. Publisher: Acton, A.C.T. : ANU E Press, 2007. ISBN: 9781921313448 (pbk.) 9781921313431 (online) Series: Aboriginal history monograph Notes: Bibliography. Subjects: Indigenous peoples–Australia–History. Aboriginal Australians, Treatment of–History. Colonies in literature. Australia–Colonization–History. Australia–Historiography. Other Authors: Macfarlane, Ingereth. Hannah, Mark. Dewey Number: 994 Aboriginal History is administered by an Editorial Board which is responsible for all unsigned material. Views and opinions expressed by the author are not necessarily shared by Board members. The Committee of Management and the Editorial Board Peter Read (Chair), Rob Paton (Treasurer/Public Officer), Ingereth Macfarlane (Secretary/ Managing Editor), Richard Baker, Gordon Briscoe, Ann Curthoys, Brian Egloff, Geoff Gray, Niel Gunson, Christine Hansen, Luise Hercus, David Johnston, Steven Kinnane, Harold Koch, Isabel McBryde, Ann McGrath, Frances Peters- Little, Kaye Price, Deborah Bird Rose, Peter Radoll, Tiffany Shellam Editors Ingereth Macfarlane and Mark Hannah Copy Editors Geoff Hunt and Bernadette Hince Contacting Aboriginal History All correspondence should be addressed to Aboriginal History, Box 2837 GPO Canberra, 2601, Australia. Sales and orders for journals and monographs, and journal subscriptions: T Boekel, email: [email protected], tel or fax: +61 2 6230 7054 www.aboriginalhistory.org ANU E Press All correspondence should be addressed to: ANU E Press, The Australian National University, Canberra ACT 0200, Australia Email: [email protected], http://epress.anu.edu.au Aboriginal History Inc.
    [Show full text]
  • Inquiry Into Petrol Sniffing in Remote Aboriginal Communities
    John Taylor is a Senior Fellow and Deputy Director at the Centre for Aboriginal Economic Policy Research, The Australian National University. C entre for John Bern is a Professor and Director of the A boriginal South East Arnhem Land Collaborative E conomic Research Project (SEALCP) at the University of Wollongong. P olicy Kate Senior is an Honorary Fellow at SEALCP The Australian National University R esearch and a doctoral candidate at The Australian National University. Ngukurr at the Millennium at Ngukurr Rapid change arising from large-scale development projects can place severe strain on the physical infrastructure and Ngukurr at the social fabric of affected communities, as well as providing opportunities for betterment. The remote Aboriginal town of Ngukurr, together with its satellite outstations in the south- Millennium: A Baseline east Arnhem Land region of the Northern Territory, faces the J. Taylor, J. Bern, and K.A. Senior and K.A. Bern, J. Taylor, J. prospect of such change as a result of mineral exploration Profile for Social Impact activity currently underway, instigated by Rio Tinto. This study, which is comprehensive in its scope, provides a synchronistic baseline statistical analysis of social and Planning in South-East economic conditions in Ngukurr. It emphasises several key areas of policy interest and intervention, including the Arnhem Land demographic structure and residence patterns of the regional population, and their labour force status, education and training, income, welfare, housing, and health status. J. Taylor, J. Bern, and K.A. Senior The result is an appraisal of Ngukurr’s social and economic life after a generation of self management and land rights, immediatly prior to a possible period of major introduced economic development based on mineral exploitation.
    [Show full text]
  • Flood Watch Areas Arnhem Coastal Rivers Northern Territory River Basin No
    Flood Watch Areas Arnhem Coastal Rivers Northern Territory River Basin No. Blyth River 15 Buckingham River 17 East Alligator River 12 Goomadeer River 13 A r a f u r a S e a Goyder River 16 North West Coastal Rivers Liverpool River 14 T i m o r S e a River Basin No. Adelaide River 4 below Adelaide River Town Arnhem Croker Coastal Daly River above Douglas River 10 Melville Island Rivers Finniss River 2 Island Marchinbar Katherine River 11 Milikapiti ! Island Lower Daly River 9 1 Elcho ! Carpentaria Coastal Rivers Mary River 5 1 Island Bathurst Nguiu Maningrida Galiwinku River Basin No. Island 12 ! ! Moyle River 8 ! Nhulunbuy 13 Milingimbi ! Yirrkala ! Calvert River 31 South Alligator River 7 DARWIN ! ! Howard " Oenpelli Ramingining Groote Eylandt 23 Tiwi Islands 1 2 Island 17 North West 6 ! 14 Koolatong River 21 Jabiru Upper Adelaide River 3 Coastal 15 Batchelor 4 Limmen Bight River 27 Wildman River 6 Rivers ! 16 7 21 McArthur River 29 3 5 ! Bickerton Robinson River 30 Island Daly River ! Groote Roper River 25 ! ! Bonaparte Coastal Rivers Bonaparte 22 Alyangula Eylandt Rosie River 28 Pine 11 ! 9 Creek Angurugu River Basin No. Coastal 8 Towns River 26 ! ! Kalumburu Rivers Numbulwar Fitzmaurice River 18 ! Walker River 22 Katherine 25 Upper Victoria River 20 24 Ngukurr 23 Waterhouse River 24 18 ! Victoria River below Kalkarindji 19 10 Carpentaria G u l f 26 Coastal Rivers ! o f ! Wyndham Vanderlin C a r p e n t a r i a ! 28 Kununurra West Island Island 27 ! Borroloola 41 Mount 19 Barnett Mornington ! ! Dunmarra Island Warmun 30 (Turkey 32 Creek) ! 29 Bentinck 39 Island Kalkarindji 31 ! Elliott ! ! Karumba ! 20 ! Normanton Doomadgee Burketown Fitzroy ! Crossing Renner ! Halls Creek ! Springs ! ! Lajamanu 41 Larrawa ! Warrego Barkly ! 40 33 Homestead QLD ! Roadhouse Tennant ! Balgo Creek WA ! Hill Camooweal ! 34 Mount Isa Cloncurry ! ! ! Flood Watch Area No.
    [Show full text]
  • In Ngukurr: a Remote Australian Aboriginal Community
    Understanding ‘Work’ in Ngukurr: A Remote Australian Aboriginal Community Eva McRae-Williams (BA, BBH, MA) September 2008 Thesis submitted in fulfilment of the requirements for: Doctor of Philosophy (Anthropology) Charles Darwin University Statement of Authorship Except where referenced in the text of the research project, this dissertation contains no material published elsewhere or extracted in whole or part from a thesis or report by me for another degree or diploma. No other person’s work has been used without due acknowledgement in the main text of the dissertation. The dissertation has not been submitted for the award of any other degree or diploma in any other tertiary institution. Eva McRae-Williams Date: ……………… ii Abstract This thesis is an ethnographic study of the ‘work’ ideologies inherent in a remote Australian Aboriginal community; Ngukurr in South East Arnhem Land of the Northern Territory. Formerly known as the Roper River Mission and established in 1908, it is today home to approximately 1000 Aboriginal inhabitants. Fieldwork for this project was conducted in three phases between 2006 and 2007 totalling seven months. The aim of this research was to gain an insight into the meaning and value of ‘work’ for Aboriginal people in Ngukurr. First, this involved acknowledging the centrality of paid employment to mainstream western ‘work’ ideology and its influence on my own, and other non-Aboriginal peoples, understandings and ways of being in the world. Through this recognition the historical and contemporary relationship between Aboriginal and non-Aboriginal people in the northern part of Australia, specifically the Roper River region, was found to be fundamentally shaped by labour relations and dominant western ‘work’ ideology.
    [Show full text]
  • Flood Risk Management in Australia Building Flood Resilience in a Changing Climate
    Flood Risk Management in Australia Building flood resilience in a changing climate December 2020 Flood Risk Management in Australia Building flood resilience in a changing climate Neil Dufty, Molino Stewart Pty Ltd Andrew Dyer, IAG Maryam Golnaraghi (lead investigator of the flood risk management report series and coordinating author), The Geneva Association Flood Risk Management in Australia 1 The Geneva Association The Geneva Association was created in 1973 and is the only global association of insurance companies; our members are insurance and reinsurance Chief Executive Officers (CEOs). Based on rigorous research conducted in collaboration with our members, academic institutions and multilateral organisations, our mission is to identify and investigate key trends that are likely to shape or impact the insurance industry in the future, highlighting what is at stake for the industry; develop recommendations for the industry and for policymakers; provide a platform to our members, policymakers, academics, multilateral and non-governmental organisations to discuss these trends and recommendations; reach out to global opinion leaders and influential organisations to highlight the positive contributions of insurance to better understanding risks and to building resilient and prosperous economies and societies, and thus a more sustainable world. The Geneva Association—International Association for the Study of Insurance Economics Talstrasse 70, CH-8001 Zurich Email: [email protected] | Tel: +41 44 200 49 00 | Fax: +41 44 200 49 99 Photo credits: Cover page—Markus Gebauer / Shutterstock.com December 2020 Flood Risk Management in Australia © The Geneva Association Published by The Geneva Association—International Association for the Study of Insurance Economics, Zurich. 2 www.genevaassociation.org Contents 1.
    [Show full text]
  • Gulf Water Study Roper River Region
    Gulf Water Study Roper River Region Front cover: Painting of the Rainbow Serpent by Rex Wilfred. (see Appendix A for the story of the painting) Satellite image of the Roper River. Yawurrwarda Lagoon. GULF WATER STUDY Early morning at Roper Bar, Roper River WATER RESOURCES OF THE ROPER RIVER REGION REPORT 16/2009D U. ZAAR DARWIN NT © Northern Territory of Australia, 2009 ISBN 978-1-921519-64-2 ii ACKNOWLEDGEMENTS This project was co -funded through the Australian Government Water Smart Australia Program and the Northern Territory Government Department of Natural Resources, Environment the Arts and Sport. I would like to thank my colleagues who provided help on this project: Peter Jolly (now retired) who instigated this project; Des Yin Foo for his generous support as our team manager; Anthony Knapton, my co-worker on this project who provided technical and field assistance; Steve Tickell, Danuta Karp and Jon Sumner for their technical advice; Lynton Fritz for his outstanding cartographic skills in drawing up the maps; Renee Ramsay for the production of the GIS and collation of the DVD and our experienced technical team – Rodney Metcalfe, Steve Hester, Roger Farrow and Rob Chaffer for all their efficient fieldwork. A special thanks also to Phil O’Brien who not only provided enthusiastic field assistance but wise advice. I take pleasure in also thanking members of our technical working group; Max Gorringe - the manager of Elsey Station, Frank Shadforth – the manager of Seven Emu Station and Glenn Wightman – ethnobiologist who all kindly took the time to provide advice at our meetings. All were always ready to help.
    [Show full text]
  • Threatened Species Survey Report For
    Threatened species ‘likelihood of occurrence’ assessment This ‘likelihood of occurrence’ assessment identifies which threatened species have potential to occur within the project footprint. The following procedure was used to determine the likelihood of occurrence of threatened species: 1) Identify potential habitat features within the project footprint using available desktop information (i.e. land unit mapping, existing vegetation mapping, aerial imagery, fire history etc.). 2) Identify: a. Matters of National Environmental Significance obtained using the Protected Matters Search Tool (undertaken January 2017). b. Bioregional threatened species records extracted from the NT flora and fauna atlases maintained by DENR. 3) Collate the following details for each of those species – conservation status (NT and Federal), habitat requirements, distribution and number of records within the bioregions. 4) Analyse the likelihood that each species will occur in the project footprint by applying the following likelihood classifications: a. HIGH – it is expected that this species will be within the project footprint because of the presence of core suitable habitat, and/or there are recent proximate records (i.e. post-2000). b. MEDIUM – this species may occur within the project footprint; however, there is evidence that lowers its likelihood of occurrence (i.e. lack of core habitat, no recent records with the search area, habitat degradation etc.). c. LOW – it is not expected that this species is supported within the project footprint, as there is no suitable habitat for the species and/or current threats in the region are known to have significantly impacted upon the species. d. NONE – there is strong evidence that this species will not occur within the project footprint.
    [Show full text]