Background Document for Amended Plan 2016
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Water Sharing Plan for the Castlereagh River Unregulated and Alluvial Water Sources Background document for amended plan 2016 Published by the NSW Department of Primary Industries, Water Water Sharing Plan for the Castlereagh River Unregulated and Alluvial Water Sources - Background document for amended plan 2016 Published in September 2016. Incorporates amendments to the plan following inclusion of the Castlereagh River above Binnaway Water Source. This report may be cited as: Rabbidge T. (2016) Water sharing plan for the Castlereagh Unregulated and Alluvial Water Sources: Background document for amended plan 2016. NSW Department of Primary Industries, Sydney More information www.dpi.nsw.gov.au Acknowledgments Cartographic map outputs: by James Petrovic, DPI Water as provided for “Water resources and management overview: Castlereagh catchment” by Dayle Green, DPI Water (unpublished). Cover photo: Castlereagh River at Castlereagh Highway, courtesy C Goodwin (CC BY-SA 3.0) [Insert Reference number] © State of New South Wales through the Department of Trade and Investment, Regional Infrastructure and Services, 2016. You may copy, distribute and otherwise freely deal with this publication for any purpose, provided that you attribute the NSW Department of Primary Industries as the owner. Disclaimer: The information contained in this publication is based on knowledge and understanding at the time of writing (September 2016). However, because of advances in knowledge, users are reminded of the need to ensure that information upon which they rely is up to date and to check currency of the information with the appropriate officer of the Department of Primary Industries or the user’s independent adviser. WSP for Castlereagh Unregulated and Alluvial Water Sources: Background document 2016 Contents Introduction .......................................................................................................................... 1 An amended plan for the unregulated Castlereagh catchment ...................................... 2 Purpose of the plan .............................................................................................................. 3 Why are water sharing plans being prepared? .............................................................. 3 Benefits for water users ................................................................................................ 3 Environmental considerations ....................................................................................... 3 Scope of the plan .......................................................................................................... 5 Water management units .............................................................................................. 5 Objectives of the plan .................................................................................................... 7 Description of the plan area .................................................................................................. 8 The Castlereagh River valley ........................................................................................ 8 High environmental value areas .................................................................................... 9 Land use history .......................................................................................................... 10 Climate ........................................................................................................................ 13 Streamflows ................................................................................................................ 15 Groundwater ............................................................................................................... 17 Climate change and variability .................................................................................... 18 Water entitlement and use .......................................................................................... 19 Local water utility requirements ................................................................................... 21 Policy and planning framework ........................................................................................... 22 The Water Management Act 2000 ............................................................................... 22 Access Licence Dealing Principles .............................................................................. 22 National Water Initiative .............................................................................................. 23 Murray-Darling Basin Cap Agreement ......................................................................... 23 The Basin Plan ............................................................................................................ 24 Natural Resource Commission targets ........................................................................ 24 Catchment Action Plans .............................................................................................. 25 NSW water planning policies and considerations ........................................................ 26 Role of the panels ....................................................................................................... 32 Consultation ................................................................................................................ 33 Water sharing rules for unregulated water sources ............................................................. 35 Classification method .................................................................................................. 35 Developing the access and dealings rules .................................................................. 36 Refining water sharing rules as a result of public exhibition ......................................... 39 Managing extraction in unregulated water sources ..................................................... 40 WSP for Castlereagh Unregulated and Alluvial Water Sources: Background document 2016 Water sharing rules for alluvial groundwater sources ......................................................... 42 Background ................................................................................................................. 42 Developing the water sharing rules ............................................................................. 42 Managing extraction .................................................................................................... 43 Amendments to the Plan .................................................................................................... 47 Refining the access rules for the Castlereagh River above Binnaway ......................... 47 Adaptive management........................................................................................................ 49 Amendment provisions ................................................................................................ 49 Monitoring, evaluation and reporting ........................................................................... 49 Performance indicators ............................................................................................... 50 Plan review ................................................................................................................. 50 Glossary ............................................................................................................................. 51 References ......................................................................................................................... 54 Appendices ........................................................................................................................ 55 Appendix 1: Water sharing plan map .......................................................................... 56 Appendix 2: Identified threatened species ................................................................... 57 Appendix 3: Interagency Regional Panel and support staff ......................................... 58 Appendix 4: Interagency Regional Panel reference materials ..................................... 59 WSP for Castlereagh Unregulated and Alluvial Water Sources: Background document 2016 Tables Table 1: Water management units for this water sharing plan .............................................. 6 Table 2: Threatened aquatic species of the Macquarie-Bogan-Castlereagh catchments ....................................................................................................... 10 Table 3: Land use types in the Castlereagh catchment ...................................................... 12 Table 4: Active stream gauging stations in the plan area .................................................... 16 Table 5: Percentile flows for selected gauges in the upper catchment ................................ 16 Table 6: Total entitlement, average usage and number of licences for each water resource ........................................................................................................... 19 Table 7: Town water supplies, location and entitlement volume in the plan area ................ 21 Table 8: Contribution of the plan to the relevant NRC state wide targets ............................ 25 Table 9: Indicative access rules for rivers and creeks under the refined approach ............. 36 Table 10: Changes to water sharing rules as a result of public exhibition ........................... 39 Figures