Water Audit Monitoring Report 2006–07
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Water Audit Monitoring Report 2006/07 Report of the Murray-Darling Basin Commission on the Cap on Diversions June 2008 Water Audit Monitoring Report 2006/07 Report of the Murray-Darling Basin Commission on the Cap on Diversions June 2008 ACKNOWLEDGMENTS The development of the Murray-Darling Basin Commission’s 2006/07 Water Audit Monitoring Report has involved the valuable input, support and commitment of many people. Each stage of the development of the report was overseen by the members of the inter-Governmental working groups and committees. Without naming each particular contributor, thanks are due to the following agencies: • Commonwealth Bureau of Meteorology, Australia; • Australian Government Department of Environment, Water, Heritage, and Arts • ACT Department of Territory and Municipal Services; • NSW Department of Natural Resources • QLD Department of Natural Resources and Water; • SA Department of Water, Land and Biodiversity Conservation; • VIC Department of Sustainability and Environment; and • VIC Goulburn-Murray Rural Water Authority. Internet: http://www.mdbc.gov.au This report may be cited as: Water Audit Monitoring Report 2006/07 © Copyright Murray-Darling Basin Published by the Murray-Darling Basin Commission 2008 Commission, Canberra, as per the requirement of This work is copyright. Graphical and textual the Murray-Darling Basin Agreement (Schedule F). information in the work (with the exception of photographs and the MDBC logo) may be stored, Offi ce Address retrieved and reproduced in whole or in part, Level 4, 51 Allara St, Canberra provided the information is not sold or used for Australian Capital Territory commercial benefi t and its source (Water Audit Postal Address Monitoring Report 2006/07) is acknowledged. GPO Box 409, Canberra ACT 2601 Such reproduction includes fair dealing for the purpose of private study, research, criticism or Tel: (02) 6279 0100 review as permitted under the Copyright Act 1968. from overseas +61 2 6279 0100 Reproduction for other purposes is prohibited without prior permission of the Murray-Darling Fax: (02) 6248 8053 Basin Commission or the individual photographers from overseas + 61 2 6248 8053 and artists with whom copyright applies. Email: [email protected] To the extent permitted by law, the copyright holders (including its employees and consultants) Internet: http://www.mdbc.gov.au exclude all liability to any person for any consequences, including but not limited to all Cover Image: Murray River. © Arthur Mostead losses, damages, costs, expenses and any other Pub no. 37/08 compensation, arising directly or indirectly from ISBN 978-1-921257-77-3 using this report (in part or in whole) and any Recycled Paper: This publication is printed on information or material contained in it. Monza Satin Recycled, a new generation premium I&D 12691 A2+ gloss coated recycled paper. It is produced with 50% recycled fi bre (15% post consumer and 35% pre-consumer) with the balance (50%) being oxygen bleached virgin pulp. FOREWORD June 2008 Senator the Hon Penny Wong Chairperson Murray-Darling Basin Ministerial Council MF26, First Floor Ministerial Wing Parliament House Canberra ACT 2600 Dear Minister I have great pleasure in submitting to you the Water Audit Monitoring Report 2006/07. The Council established the Cap in 1995 and set the operating framework in 1996. The Council formalised the operating rules for the Cap in the form of Schedule F to Murray-Darling Basin Agreement in 2000. The Water Audit Monitoring Report 2006/07 is the eleventh in a series of the reports on the Cap on Diversion and has been produced as a requirement of Schedule F. The Water Audit Monitoring Report 2006/07 complements the Independent Audit Group Report 2006/07. Whereas the focus of the Independent Audit Group Report is the Cap compliance and the activities related to it, this Report provides a broader picture of the Cap compliance, water use, accuracy of water use fi gures, climatic overview for the water year, water availability through allocations, off-allocations and water trading, storages losses, and groundwater use. Schedule F requires the Commission to maintain a Diversion Cap Register. The updated Diversion Cap Register is appended to the Water Audit Monitoring Report. The Diversion Cap Register provides details for every designated Cap valley and for every reporting year since 1997/98 of annual Cap adjustments for trade, trade-adjusted annual Cap targets, annual diversions, annual Cap credits and cumulative Cap credits since 1997/98. This Register is the formal record of diversions and Cap compliance in the Basin. The text in Chapters 4, 5, 6, 7 and 8 and data published in this Report have been supplied by the States and Territory. The published data are considered to be the best available estimates for Water Diversion, Water Trade, Cap targets and other data. If better estimates become available in future, the Diversion Cap Register will be amended accordingly. The Diversion and Trade fi gures in this Report are considered to be the latest fi gures for the water year and supersede those reported in the Independent Audit Group Report 2006/07. The Commission appreciates the co-operation received from the States and Territory Governments Offi cers in compiling this Report. Yours sincerely Wendy Craik Chairman WATER AUDIT MONITORING REPORT 2006/07 iii iv WATER AUDIT MONITORING REPORT 2006/07 CONTENTS 1. Introduction ..............................................................................................................................................................................................................................1 2. Background ..............................................................................................................................................................................................................................4 2.1 Audit of Water Use in the Murray-Darling Basin, June 1995 .......................................................................................4 2.2 The Cap...........................................................................................................................................................................................................................4 2.3 IAG Review of Cap Implementation 2006/07 ...............................................................................................................................5 3. The year in review ................................................................................................................................................................................................................6 3.1 Water Diversions ...................................................................................................................................................................................................6 3.2 Accuracy of Measurement ............................................................................................................................................................................9 3.3 Climatic Overview 2006/07 .......................................................................................................................................................................11 3.4 Defi nition of Cap..................................................................................................................................................................................................15 3.5 Comparison of 2006/07 Water Use with the Cap ..................................................................................................................16 3.5.1 New South Wales..............................................................................................................................................................................16 3.5.2 Victoria .......................................................................................................................................................................................................16 3.5.3 South Australia ...................................................................................................................................................................................17 3.5.4 Queensland ............................................................................................................................................................................................17 3.5.5 Australian Capital Territory ....................................................................................................................................................17 3.5.6 Basin-wide comparison of actual diversions with the annual Cap targets................................17 3.6 Measurement of Land-surface (Floodplain Harvesting) Diversions..................................................................18 4. Review of 2006/07 water use in New South Wales ............................................................................................................................21 4.1 Water Management Overview ................................................................................................................................................................21 4.2 Water Use Overview ........................................................................................................................................................................................21 4.3 Border Rivers ........................................................................................................................................................................................................22