2010 Audit of the Sydney Drinking Water Catchment Volume 2 – Appendices
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2010 Audit of the Sydney Drinking Water Catchment Volume 2 – Appendices Report to the Minister for Water 2010 Audit of the Sydney Drinking Water Catchment Volume 2 – Appendices Report to the Minister for Water © 2010 State of NSW and Department of Environment, Climate Change and Water NSW. The Department of Environment, Climate Change and Water and State of NSW are pleased to allow this material to be reproduced for educational or non-commercial purposes in whole or in part, provided the meaning is unchanged and its source, publisher and authorship are acknowledged. Specific permission is required for the reproduction of photographs and images. Published by: Department of Environment, Climate Change and Water NSW 59 Goulburn Street, Sydney PO Box A290 Sydney South 1232 Ph: (02) 9995 5000 (switchboard) Ph: 131 555 (environment information and publications requests) Ph: 1300 361 967 (national parks, climate change and energy efficiency information and publications requests) Fax: (02) 9995 5999 TTY: (02) 9211 4723 Email: [email protected] Website: www.environment.nsw.gov.au Report pollution and environmental incidents Environment Line: 131 555 (NSW only) or [email protected] See also www.environment.nsw.gov.au/pollution Cover photos: Russell Cox Top: Cordeaux River near Pheasants Nest Weir Bottom row from left: 1. Fitzroy Falls 2. Gully erosion Wollondilly River sub-catchment 3. Tallowa Dam 4. Agriculture Upper Nepean River sub-catchment ISBN 978 1 74293 027 5 DECCW 2010/974 November 2010 Printed on recycled paper Contents Volume 1: Main report Summary Recommendations Chapter 1 Introduction Chapter 2 Audit Methodology Chapter 3 Land Use and Human Settlements Chapter 4 Biodiversity and Habitats Chapter 5 Water Availability Chapter 6 Water Quality Chapter 7 Audit Recomendations Volume 2: Appendices Appendix A: Roles and responsibilities of stakeholders ...........................1 Appendix B: List of parties that responded to the audit ............................7 Appendix C: Sub-catchment summaries .....................................................9 Upper Coxs River........................................................................................................10 Mid Coxs River sub-catchment....................................................................................21 Lower Coxs River........................................................................................................32 Grose River ................................................................................................................40 Kowmung River ..........................................................................................................46 Lake Burragorang .......................................................................................................53 Werriberri Creek .........................................................................................................60 Little River...................................................................................................................68 Nattai River.................................................................................................................75 Upper Nepean River ...................................................................................................83 Upper Wollondilly River...............................................................................................96 Wollondilly River ....................................................................................................... 104 Mulwaree River......................................................................................................... 115 Wingecarribee River.................................................................................................. 122 Woronora River Sub-catchment (Georges River Catchment)..................................... 132 Shoalhaven Catchment................................................................................... 141 Kangaroo River......................................................................................................... 142 Nerrimunga River...................................................................................................... 152 Bungonia Creek ........................................................................................................ 159 Boro Creek ............................................................................................................... 167 Mid Shoalhaven River............................................................................................... 174 Endrick River ............................................................................................................ 181 Reedy Creek............................................................................................................. 187 Mongarlowe River..................................................................................................... 194 Braidwood................................................................................................................. 201 Back and Round Mountain Creeks............................................................................ 208 Jerrabattgulla Creek.................................................................................................. 214 Upper Shoalhaven River ........................................................................................... 220 References....................................................................................................... 226 Appendix D: Major projects in the Catchment ........................................230 Appendix E: Water sharing plan management zones.............................238 Appendix F: Flow exceedance curves .....................................................243 Flow exceedance curves (Cumulative Distribution Function) Hawkesbury–Nepean Catchment ................................................................... 243 Flow Exceedance Curves (Cumulative Distribution Function) Woronora Catchment...................................................................................... 253 Flow Exceedance Curves (Cumulative Distribution Function) Shoalhaven Catchment................................................................................... 255 Appendix G: River Water Quality..............................................................260 Dam and Reservoir Water Quality .................................................................. 292 Appendix A: Roles and responsibilities of stakeholders Sydney Catchment Authority The roles and responsibilities of the Sydney Catchment Authority (SCA) are specified by the Sydney Water Catchment Management Act 1998. Section 13 of this Act identifies the SCA’s role to manage and protect the catchment areas and catchment infrastructure works, be it a supplier of bulk water, or to regulate certain activities within, or affecting, the outer catchment and inner catchment areas. The principal objectives of the SCA, defined in the Act, are to ensure the catchment areas and infrastructure are managed and protected to promote water quality, the protection of public health and safety and the protection of the environment. The Act also enables an Operating Licence to be issued to authorise the SCA to provide, construct, operate, manage and maintain systems and services, in order to achieve its objectives. The Act also requires the SCA to make arrangements with Sydney Water Corporation on the standard of the quality of the water supplied from the Sydney Drinking Water Catchment (the Catchment) to Sydney Water. The Bulk Water Supply Agreement (BWSA) addresses the supply of raw water to customers (primarily Sydney Water). This agreement specifies the quality of raw water that is to be supplied to the water filtration plants. The SCA has a Water Management Licence, administered by the NSW Office of Water (NOW – formerly Department of Water and Energy), for its activities in relation to the abstraction and use of water from identified water sources and water management works. The licence also specifies the quantity of water that must be made available for environmental purposes. The SCA regulates activities in the special and controlled areas likely to impact on its ability to supply high quality raw water to its customers through the Sydney Water Catchment Management Regulation 2008. The SCA jointly manages the Special Areas with the Department of Environment Climate Change and Water (DECCW) under the Special Areas Strategic Plans of Management. The Plan sets the framework for a high level of protection of the natural and cultural heritage in these areas, and maintain the areas as intact buffers for the storages. The Sydney Water Catchment Management Regulation 2008 allows SCA to exercise power under the Protection of the Environment Operations Act 1997 for non- scheduled activities. These powers may be exercised when protecting catchment areas or protecting and enhancing the quality of water in catchment areas. The SCA is also involved in the development and assessment processes in the Catchment under the Environmental Planning and Assessment Act 1979 (EP&A Act) through a concurrence role of the Regional Environmental Plan N.1 (REP 1) which replaces the previous SEPP 58, assisting in the protection of Sydney’s drinking water supply. Appendix A 1 Department of Environment Climate Change and Water NSW On 11 June 2009, the Premier announced significant public sector reforms to