Upper Duck River Wetlands & Riparian Plan of Management
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UPPER DUCK RIVER WETLANDS & RIPARIAN PLAN OF MANAGEMENT Prepared for Parramatta City Council By Applied Ecology Pty Ltd 25/10/2012 i Applied Ecology Pty Limited reserves all legal rights and remedies in relation to any infringement of its rights in respect of its confidential information. DOCUMENT VERIFICATION Project Title UPPER DUCK RIVER WETLANDS AND RIPARIAN CORRIDOR PLAN OF MANAGEMENT Document Title UPPER DUCK RIVER WETLANDS AND RIPARIAN CORRIDOR PLAN OF MANAGEMENT Client Parramatta City Council (PCC), Auburn City Council (ACC), Sydney Metropolitan Catchment Management Authority (SMCMA) Client contact Pino Todarello, PCC Revision Prepared by Reviewed by Date submitted Draft (D) MB/AC L. Dedovic (SMCMA) 28th April 2012 G. Hodges (ACC) Final draft MB/AC P. Todarello (PCC) 18th May 2012 A Collins (PCC) L. Dedovic (SMCMA) DISCLAIMER This report is prepared by APPLIED ECOLOGY Pty Limited for its clients' purposes only. The contents of this report are provided expressly for the named client for its own use. No responsibility is accepted for the use of or reliance upon this report in whole or in part by any third party. This report is prepared with information supplied by the client and possibly other stakeholders. While care is taken to ensure the veracity of information sources, no responsibility is accepted for information that is withheld, incorrect or that is inaccurate. This report has been compiled at the level of detail specified in the report and no responsibility is accepted for interpretations made at more detailed levels than so indicated. ACKNOWLEDGMENTS APPLIED ECOLOGY Pty Limited wishes to thank all representing organisations and individuals who assisted with fieldwork and contributed to the production or commented on the content of this report, including: Pino Todarello Parramatta City Council Anthony Collins Parramatta City Council Greg Hodges Auburn City Council Linda Dedovic Sydney Metropolitan Catchment Management Authority ii EXECUTIVE SUMMARY Upper Duck River Wetlands cover approximately 26 ha along the Duck River in inner western Sydney, and is part of the Duck River subcatchment flowing to the Parramatta River near the Silverwater Bridge. The Upper Duck River Wetlands are surrounded by public land owned and managed by Auburn Council in the east, and Parramatta City Council in the west. Major landowners include State Rail Corporation, Australia Post, and others. The Wetlands are of regional conservation significance, providing home to three Endangered Ecological Communities and several threatened species, and are highly valued by the local community. The subject area provides opportunities for passive recreational activities, and is surrounded by numerous sporting facilities and playing fields in both Local Government Areas (LGAs). Overall, however, the wetlands are in a degraded condition with numerous environmental and hydrological issues. This plan presents a detailed vegetation management action program. High priority actions include controlling weeds and pollutants at the source, community education, additional shared use footpath/cycleways and the installation of signage. FUNDING FOR THE PLAN OF MANAGEMENT Funding for this project was jointly provided by Sydney Metropolitan Catchment Management Authority Parramatta City Council Auburn City Council iii Contents ............................................................................................................................................................. i DOCUMENT VERIFICATION .................................................................................................................... ii EXECUTIVE SUMMARY ........................................................................................................................... iii FUNDING FOR THE PLAN OF MANAGEMENT .................................................................................... iii Contents ............................................................................................................................................. iv List of Tables ...................................................................................................................................... ix Table of Figures .................................................................................................................................. xi ACRONYMS ........................................................................................................................................... xii INTRODUCTION ....................................................................................................................................... 1 PROJECT BACKGROUND ...................................................................................................................... 1 PURPOSE OF THE PLAN ....................................................................................................................... 2 CONSULTATIVE FRAMEWORK ............................................................................................................. 2 POLICIES AND FRAMEWORK FOR MANAGEMENT .................................................................................. 3 SITE DESCRIPTION AND CONTEXT ........................................................................................................... 4 LOCATION AND SETTING ..................................................................................................................... 4 REACH PLAN ........................................................................................................................................ 6 NSW WETLAND CATEGORY ................................................................................................................. 7 LAND TENURE AND ZONING; PERMITTED LAND USE ......................................................................... 8 HISTORY OF THE SITE ........................................................................................................................ 11 Stream and Channel Morphology ................................................................................................. 14 SOILS AND GEOLOGY ........................................................................................................................ 15 ACID SULPHATE SOILS ....................................................................................................................... 15 HYDROLOGY AND CLIMATE CHANGE .................................................................................................... 17 CATCHMENT ANALYSIS ..................................................................................................................... 17 FLOW REGIME ................................................................................................................................... 21 INFLOWS AND OUTFLOWS................................................................................................................ 23 TIDAL FLUSHING ................................................................................................................................ 23 WATER QUALITY................................................................................................................................ 25 Point Source Pollution ................................................................................................................... 26 Diffuse Source Pollution ................................................................................................................ 26 CLIMATE VARIABILITY AND CLIMATE CHANGE ................................................................................. 28 ECOLOGICAL ASSETS AND VALUES ....................................................................................................... 30 PHYSICAL GEOGRAPHY...................................................................................................................... 30 iv THREATENED FLORA AND FAUNA SPECIES IN THE CATCHMENT ..................................................... 30 Threatened Species ....................................................................................................................... 30 JAMBA, CAMBA or RoKAMBA species at the site ......................................................................... 31 OTHER FLORA AND FAUNA ............................................................................................................... 32 Fauna present ............................................................................................................................... 32 Flora present ................................................................................................................................. 32 VEGETATION COMMUNITIES PRESENT ............................................................................................. 32 Cumberland Swamp Oak Riparian Forest (Swamp Oak Floodplain Forest EEC) ........................... 34 Cumberland Riverflat Forest (Riverflat Eucalypt Forest EEC) ....................................................... 35 Coastal Freshwater Reedland (Freshwater Wetlands on the Coastal Floodplain EEC) ................ 36 Cooks River/Castlereagh Ironbark Forest EEC .............................................................................. 37 Management of EECs .................................................................................................................... 37 Vegetated buffer ..........................................................................................................................