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Water Management Planning Report Series #WMP 10/04 Current Water Management in the Macquarie River Catchment December, 2010 Water Policy and Planning Branch Water and Marine Resources Division Department of Primary Industries, Parks, Water and Environment Copyright Notice Material contained in this report is subject to Australian copyright law. Other than in accordance with the Copyright Act 1968 of the Commonwealth Parliament, no part of this report may, in any form or by any means, be reproduced, transmitted or used. This report cannot be redistributed for any commercial purpose whatsoever, or distributed to a third party for such purpose, without prior written permission being sought from the Department of Primary Industries, Parks, Water and Environment, on behalf of the Crown in Right of the State of Tasmania. Disclaimer While the Department of Primary Industries, Parks, Water and Environment has made every attempt to ensure the accuracy and reliability of the information and data provided in this report, it is the responsibility of the data user to make their own decisions about the accuracy, currency, reliability and correctness of information provided. The Department of Primary Industries, Parks, Water and Environment, its employees and agents, and the Crown in the Right of the State of Tasmania, do not accept any liability for any damage caused by, or economic loss arising from, reliance on this information. Preferred Citation DPIPWE (2010). Current Water Management in the Macquarie River Catchment. Water Management Planning Report Series #WMP 10/04. Water and Marine Resources Division, Department of Primary Industries, Parks, Water and Environment, Hobart. The Department of Primary Industries, Parks, Water and Environment (DPIPWE) The Department of Primary Industries, Parks, Water and Environment provides leadership in the sustainable management and development of Tasmania’s natural resources. The Mission of the Department is to support Tasmania’s development by ensuring effective management of our natural resources. The Water and Marine Resources Division provides a focus for water management and water development in Tasmania through a diverse range of functions, including implementing the Water Management Act 1999, the Water Development Plan for Tasmania and the National Water Initiative; design of policy and regulatory frameworks to ensure sustainable use of surface water and groundwater resources; monitoring, assessment and reporting on the condition of the State’s freshwater resources; and facilitating water infrastructure development projects. ISSN: 1835-8489 Document Acceptance and Release Notice This document is Version 1 of 13 December 2010 of the report, Current Water management in the Macquarie River Catchment, prepared to inform development of the Draft Macquarie Catchment Water Management Plan. This version is authorised for release. PREPARED: Date: (Draft for initial Vanessa Elwell-Gavins 10 June, 2010 feedback) Water Management Planning Revised for Vanessa Elwell-Gavins 8 September, 2010 acceptance Water Management Planning, with feedback from key WMRD staff ACCEPTED WMP Steering Committee Date: 9 - 9 - 2010 (for external consultation APPROVED, WMP Steering Committee Date: 14 - 12 - 2010 as revised, for publication Amendments in this Release Section title Section # Amendment summary Distribution Copy # Version Issue date Issued to Electronic Table of Contents 1. Executive summary ..........................................................................................1 2. Introduction .......................................................................................................3 2.1 Purpose and scope of this report ..............................................................4 2.2 Methodology .............................................................................................5 2.3 The Macquarie catchment in a nutshell… ................................................6 3. Roles and responsibilities for water management in the Macquarie catchment ...................................................................................................................7 3.1 Hydro Tasmania .......................................................................................8 3.2 Elizabeth Macquarie Irrigation Trust .......................................................11 3.3 Blackman Water Pty Ltd .........................................................................11 3.4 Water licence holders .............................................................................12 4. Water development in the Macquarie River catchment .............................. 12 4.1 The Macquarie catchment: a largely regulated system ......................... 12 4.2 The Macquarie catchment: existing storages ........................................ 12 4.2.1 Lake Leake .............................................................................................12 4.2.2 Tooms Lake ............................................................................................13 4.2.3 Blackman Dam ...................................................................................14 4.2.4 Private storages ......................................................................................14 4.4 Macquarie Settlement Pipeline ...............................................................14 4.5 Proposed development: Midlands Water Scheme ................................15 4.6 Community aspirations for additional storages .......................................16 5. Administrative arrangements for allocation management within the Macquarie catchment ..............................................................................................17 5.1 Water Licences and Irrigation Rights ......................................................17 5.2 Water transfers .......................................................................................17 6. Water Allocations............................................................................................18 6.1 Historical basis for current allocations ....................................................18 6.2 Take periods for allocations ....................................................................19 6.3 Current allocations ..................................................................................20 6.4 Dams in the Macquarie catchment .........................................................29 6.5 Pending applications for a water licence ................................................29 7. Allocation management: access rules and restriction management ....... 31 7.1 Allocation rules, take conditions and restriction management for the two Irrigation Districts administered by the Elizabeth Macquarie Irrigation Trust .... 31 7.2 Allocation rules, take conditions and restriction management for water stored in the Blackman Dam .............................................................................33 7.3 Management arrangements administered by the Department of Primary Industries, Parks, Water and Environment .......................................................35 7.3.1 Restrictions and Cease-to-take arrangements: Isis, Blackman and other tributaries ..........................................................................................................35 7.3.2 Access to ‘flood’ flows ........................................................................36 8. How water is managed and taken in practice ..............................................38 8.1 How water allocations are taken .............................................................39 8.2 Differences between licence conditions and actual practice .................. 42 8.3 Restriction management in practice .......................................................42 9. Concluding comments: current water management and implications for the Macquarie Water Management Plan .......................................................................46 APPENDICES ............................................................................................................48 1. Abbreviations ..........................................................................................48 2. Definitions ...............................................................................................48 3. References .............................................................................................49 1. Executive summary This report canvasses the key features of current surface water management in the Macquarie catchment upstream of the junction with the Lake River. The report addresses roles and responsibilities, water development, administrative requirements, water allocations, formal management arrangements, access rules, restriction management and actual management practice. The key features of water management in the Macquarie catchment are: • A long history of water development, with three large storages in the upper catchments: Lake Leake on the upper Elizabeth River, Tooms Lake in the Upper Macquarie catchment and most recently, Blackman Dam on the upper Blackman, and many privately owned storages including three very large dams (Winton, Glen Morriston and Trefusis). • As a result, much of the water used for irrigation in the Macquarie River catchment is supplied by regulated flows. • The Macquarie catchment is part of the South Esk Basin Hydro District (comprising the Meander, South Esk, Brumbys-Lake and Macquarie Rivers) and is expected to be a ‘receiving’ catchment for the