Report Draft Collie River Revitalisation
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REPORT DRAFT COLLIE RIVER REVITALISATION STRATEGY 2018 – 2022 FOR SHIRE OF COLLIE DATE: July 2018 REFERENCE: Q23062017-004_G GFGCONSULTING ABN 94 156 452 050 CONFIDENTIAL DOCUMENT CONTROL RECORD Murali Mahendran & Mark Prepared By: Approved By: Glen Flood Jumeaux Position: Associate Team Members Position: Managing Director Signed: Signed: Date: Date: REVISION STATUS Revision No. Description of Revision Date Approved A Draft Report 14 November 2017 B Draft Report 19 November 2017 C Draft Report 30 November 2017 D Draft Report 3 December 2017 E Draft Report 20 March 2018 F Draft Report 12 April 2018 G Draft Report Recipients are responsible for eliminating all superseded documents in their possession. DISCLAIMER This document is published in accordance with and subject to an agreement between Glen Flood Group Pty Ltd (trading as GFG Consulting) and the Shire of Collie (Client). It is confined to the issues that have been raised by the Client in the Client’s engagement of GFG Consulting and is prepared using the standard of skill and due care ordinarily exercised by management and business consultants in preparing such documents. Any person or organisation that relies on or uses the document for reasons or purposes other than those agreed by GFG Consulting and the Client without first obtaining the prior written approval of GFG Consulting, does so entirely at their own risk. To the extent permitted by law, GFG Consulting excludes any liability, including any liability for negligence, for any loss, including indirect or consequential damages arising from or in relation to any reliance on this document for any purpose other than that agreed with the Client. Unit 22A, 7 The Esplanade Website: www.glenfloodgroup.com.au Mount Pleasant WA 6153 Phone: (08) 9367 3074 Document No: Q23062017-004_G 2 GFGCONSULTING ABN 94 156 452 050 CONFIDENTIAL The final plan, appendices and mapping, including all data, analysis, information and images will become the property of the Shire of Collie. ACKNOWLEDGEMENT GFG would like to thank the following people for their contributions, assistance and opinions during the course of the project. Members of the Shire of Collie Weeds and Waterways Advisory Committee Tom Wood (Public Member) Neil Martin (Councillor) Glyn Yates (Councillor) Nola Green (Councillor and Public Member) Dennis True (Public Member) Ed Riley (Public Member) James Khan (Ngalang Boodja Aboriginal Council) Peter Piavanini (Public Member) Brett King (Councillor) Gary Faries (Councillor) Jo Italiano (Councillor) Troy Morton (Public Member) Shire of Collie Andrew Dover Tracey Vogel Steve Cruickshank Invited Guests Donna Davies (Friends of Collie River Rotary Club Subcommittee) James Sheehan (Department of Primary Industries and Regional Development) Colm Harkin (Premier Coal Mining Co Ltd) Paul Richardson (Griffin Coal Mining Co Ltd) Andrew Colley (Leschenault Catchment Council) GFG would also like to thank the following people, business, and organisations: Department of Water and Environmental Regulation Andrew Creswell. Brendon Kelley Adam Maskew Collie Water Monique Warnock Hon Michael (Mick) Murray MLA for the continued support on the Collie River Revitalisation Project. The shire would like to thank the residents that provided input into the Plan. Unit 22A, 7 The Esplanade Website: www.glenfloodgroup.com.au Mount Pleasant WA 6153 Phone: (08) 9367 3074 Document No: Q23062017-004_G 3 GFGCONSULTING ABN 94 156 452 050 CONFIDENTIAL TABLE OF CONTENTS TABLE OF CONTENTS ....................................................................................................................................... 4 1 Executive Summary ...................................................................................................................................... 7 2 Recommendations Summary Table ........................................................................................................... 8 3 Introduction ................................................................................................................................................... 11 4 Purpose and Scope .................................................................................................................................... 12 5 Vision ............................................................................................................................................................. 13 6 Background .................................................................................................................................................. 14 6.1 Catchment Description ....................................................................................................................... 14 6.2 Geomorphic Setting ............................................................................................................................. 14 6.3 Climate .................................................................................................................................................. 14 6.4 Climate change .................................................................................................................................... 15 6.5 Aboriginal Heritage .............................................................................................................................. 15 6.6 Vegetation ............................................................................................................................................. 15 7 Existing Condition of the River .................................................................................................................. 17 7.1 Dredging ................................................................................................................................................ 17 7.2 Retention ............................................................................................................................................... 18 7.3 Salinity ................................................................................................................................................... 19 7.4 Nutrients ................................................................................................................................................ 20 7.5 Weeds ................................................................................................................................................... 21 7.6 Fauna .................................................................................................................................................... 22 7.6.1 Macroinvertebrates ......................................................................................................................... 22 7.6.2 Fish and Crayfish ............................................................................................................................ 23 7.7 Ground Water ....................................................................................................................................... 24 7.8 Pools ...................................................................................................................................................... 25 7.9 River Flow ............................................................................................................................................. 25 7.10 Collie Water Proposal ......................................................................................................................... 26 8 Implementation of recommendations from Collie River Revitalisation Plan 2008 ............................. 27 8.1 Establishment of environmental flows .............................................................................................. 27 8.2 Sediment Control ................................................................................................................................. 27 8.3 Mechanical or chemical removal of Nardoo .................................................................................... 27 8.4 Seasonal management of river stop-boards ................................................................................... 27 8.5 Permanent removal of stop-boards and installation of riffles ........................................................ 28 8.6 Restoration of riparian vegetation ..................................................................................................... 28 8.7 Monitoring .............................................................................................................................................. 29 9 Current State and Management ................................................................................................................ 30 9.1 River Flow ............................................................................................................................................. 30 Unit 22A, 7 The Esplanade Website: www.glenfloodgroup.com.au Mount Pleasant WA 6153 Phone: (08) 9367 3074 Document No: Q23062017-004_G 4 GFGCONSULTING ABN 94 156 452 050 CONFIDENTIAL 9.2 Water Quality ........................................................................................................................................ 31 9.3 Current Restoration of Riparian Vegetation .................................................................................... 32 9.4 Public access and erosion ................................................................................................................