DOCSLIB.ORG

Preliminary Ecological Water Requirements of Collie River East Branch: Risk Assessment of Salinity Mitigation Diversion Scenarios

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Preliminary Ecological Water Requirements of Collie River East Branch: Risk Assessment of Salinity Mitigation Diversion Scenarios Preliminary Ecological Water Requirements of Collie River East Branch: Risk Assessment of Salinity Mitigation Diversion Scenarios prepared for by Wetland Research & Management October 2007 EWRS OF COLLIE RIVER EAST BRANCH – RISK ASSESSMENT OF DIVERSIONS Preliminary Ecological Water Requirements of Collie River East Branch: Risk Assessment of Salinity Mitigation Diversion Scenarios Report Prepared for: THE DEPARTMENT OF WATER Level 4, 168 St Georges Terrace Perth Western Australia 6000 PO Box K822 Perth Western Australia 6842 Ph (08) 6364-6822 By: Wetland Research & Management 28 William Street, Glen Forrest, WA 6071, Australia Ph (61 8) 9298 9807, Fax (61 8) 6488 1029, e-mail: [email protected] October 2007 Frontispiece (clockwise from top left): East Branch of the Collie at Coolangatta Gauging Station (photo: Katherine Bennett, December 2005), long-necked tortoise Chelodina oblonga (photo by Andrew Storey, January 2006), and Crinia insignifera taken form Bingham River (photo by Andrew Storey). __________ Wetland Research & Management __________ i EWRS OF COLLIE RIVER EAST BRANCH – RISK ASSESSMENT OF DIVERSIONS Study Team Management: Andrew W. Storey Field Work: Andrew W. Storey & Glenn Shiell Macroinvertebrate Identification: Lisa Chandler Hydraulic Modelling: Andrew Storey & Jess Lynas Report: Andrew Storey & Jess Lynas Recommended Reference Format WRM (2007) Preliminary Ecological Water Requirements of Collie River East Branch: Risk Assessment of Salinity Mitigation Diversion Scenarios. Unpublished report by Wetland Research and Management to Department of Water, Perth Western Australia. October 2007. Disclaimer This document was based on the best information available at the time of writing. While Wetlands Research and Management (WRM) has attempted to ensure that all information contained within this document is accurate, WRM does not warrant or assume any legal liability or responsibility to any third party for the accuracy, completeness, or usefulness of any information supplied. The views and opinions expressed within are those of WRM and do not necessarily represent Department of Water policy. No part of this publication may be reproduced in any form, stored in any retrieval system or transmitted by any means electronic, mechanical, photocopying, recording or otherwise without the prior written permission of the Department of Water and WRM. __________ Wetland Research & Management __________ ii EWRS OF COLLIE RIVER EAST BRANCH – RISK ASSESSMENT OF DIVERSIONS CONTENTS 1 INTRODUCTION ..........................................................................................................................................................1 1.1 BACKGROUND .......................................................................................................................................................1 1.2 DIVERSION PROPOSAL ..........................................................................................................................................2 1.3 REVIEW OF EXISTING EWRS ON THE COLLIE RIVER ............................................................................................2 1.3.1 Existing EWRs...............................................................................................................................................2 1.3.2 Hydraulic modelling ......................................................................................................................................4 1.3.3 Identification of values and processes.......................................................................................................4 1.3.4 Flow objectives..............................................................................................................................................5 1.3.5 Comparison of recommended flow regimes .............................................................................................8 1.4 STUDY OBJECTIVES ..............................................................................................................................................9 1.5 STATUTORY/LEGISLATIVE FRAMEWORK..............................................................................................................10 1.6 ECOLOGICAL WATER REQUIREMENTS (EWRS)..................................................................................................11 1.7 ENVIRONMENTAL WATER PROVISIONS (EWPS).................................................................................................12 2 FLOW EVENTS METHOD FOR DETERMINATION OF EWRS.........................................................................13 3 THE COLLIE RIVER CATCHMENT........................................................................................................................15 3.1 CLIMATE ..............................................................................................................................................................15 3.2 GEOMORPHOLOGY ..............................................................................................................................................15 3.3 HYDROGEOLOGY.................................................................................................................................................16 3.4 VEGETATION........................................................................................................................................................17 4 HYDROLOGICAL STATE OF THE CATCHMENT...............................................................................................18 4.1 AVAILABLE DATA .................................................................................................................................................18 4.2 RAINFALL.............................................................................................................................................................18 5 SALINITY ....................................................................................................................................................................20 6 HYDRAULIC MODELLING ......................................................................................................................................22 6.1 INTRODUCTION ....................................................................................................................................................22 6.2 METHODS............................................................................................................................................................22 6.2.1 Survey reaches ...........................................................................................................................................22 6.2.2 Cross-sectional surveys.............................................................................................................................22 6.2.3 HEC-RAS modelling...................................................................................................................................23 6.3 RESULTS .............................................................................................................................................................26 6.3.1 Reach characteristics.................................................................................................................................26 6.3.2 HEC-RAS models .......................................................................................................................................28 7 WATER-DEPENDENT ECOLOGICAL VALUES..................................................................................................32 7.1 METHODS............................................................................................................................................................32 7.1.1 Site locations ...............................................................................................................................................32 7.1.2 Physico-chemical parameters...................................................................................................................33 7.1.3 Macroinvertebrate fauna............................................................................................................................33 7.1.4 Fish fauna ....................................................................................................................................................33 7.1.5 Faunal EWRs ..............................................................................................................................................35 7.2 RESULTS & DISCUSSION .....................................................................................................................................35 7.2.1 Physico-chemical parameters...................................................................................................................35 7.2.1.1 Patterns in physico-chemical data .................................................................................................38 7.2.2 Macroinvertebrates.....................................................................................................................................39 7.2.2.1 Taxonomic composition...................................................................................................................39 7.2.2.2 Taxa richness....................................................................................................................................39
Load more

Recommended publications
  • Coastal Land and Groundwater for Horticulture from Gingin to Augusta
    Research Library Resource management technical reports Natural resources research 1-1-1999 Coastal land and groundwater for horticulture from Gingin to Augusta Dennis Van Gool Werner Runge Follow this and additional works at: https://researchlibrary.agric.wa.gov.au/rmtr Part of the Agriculture Commons, Natural Resources Management and Policy Commons, Soil Science Commons, and the Water Resource Management Commons Recommended Citation Van Gool, D, and Runge, W. (1999), Coastal land and groundwater for horticulture from Gingin to Augusta. Department of Agriculture and Food, Western Australia, Perth. Report 188. This report is brought to you for free and open access by the Natural resources research at Research Library. It has been accepted for inclusion in Resource management technical reports by an authorized administrator of Research Library. For more information, please contact [email protected], [email protected], [email protected]. ISSN 0729-3135 May 1999 Coastal Land and Groundwater for Horticulture from Gingin to Augusta Dennis van Gool and Werner Runge Resource Management Technical Report No. 188 LAND AND GROUNDWATER FOR HORTICULTURE Information for Readers and Contributors Scientists who wish to publish the results of their investigations have access to a large number of journals. However, for a variety of reasons the editors of most of these journals are unwilling to accept articles that are lengthy or contain information that is preliminary in nature. Nevertheless, much material of this type is of interest and value to other scientists, administrators or planners and should be published. The Resource Management Technical Report series is an avenue for the dissemination of preliminary or lengthy material relevant the management of natural resources.
    [Show full text]
  • Fishes and Freshwater Crayfishes Of
    Journal of the Royal Society of Western Australia, 91: 155–161, 2008 Fishes and freshwater crayfishes of major catchments of the Leschenault Estuary: Preston and Brunswick River, including first record of a freshwater gudgeon (Eleotridae) from south-western Australia D L Morgan1 & S J Beatty2 1 Centre for Fish & Fisheries Research, Murdoch University, South St, Murdoch, WA 6150. [email protected] 2 Centre for Fish & Fisheries Research, Murdoch University, South St, Murdoch, WA 6150. [email protected] Manuscript received September 2007; accepted February 2008 Abstract A paucity of information exists on the fish and crayfish communities of two major rivers that flow into the Leschenault Inlet, south-western Western Australia. This study documents these communities and assesses their ecological significance. During February 2006, seven sites were sampled for fish and freshwater crayfish on each of the Brunswick River and Preston River with additional sites having been previously sampled in the summer of 1999/2000. The rivers generally had similar native fish communities with four endemic species, Freshwater Cobbler, Western Minnow, Western Pygmy Perch and Nightfish making up 60% of all fish captures (2670) with the remaining being from three feral freshwater and six estuarine species. Two native species of freshwater crayfish were also recorded, the Marron and Gilgie. The endemic Western Minnow and Western Pygmy Perch were the most common and widespread native fish species in both rivers. This study recorded what appears to be the Empire Gudgeon in the Preston River; the first record of this northern Australian species in the South-west Drainage Division, and its presence was attributed either to marine larval drift or as a result of an aquarium release.
    [Show full text]
  • History and Management of Culham Inlet, a Coastal Salt Lake in South-Western Australia
    JournalJournal of ofthe the Royal Royal Society Society of Westernof Western Australia, Australia, 80(4), 80:239-247, December 1997 1997 History and management of Culham Inlet, a coastal salt lake in south-western Australia E P Hodgkin 86 Adelma Road, Dalkeith, WA 6009 email: [email protected] Manuscript received August 1996; accepted May 1997. Abstract When Culham Inlet was first flooded by the Holocene rise in sea level it was an estuary, but in historic times it has been a salt lake closed by a high sea bar. It is in an area of low rainfall and episodic river flow and sometimes all water is lost by evaporation to below sea level. With above average rainfall in 1989 and 1992, high water levels in the Inlet flooded farm paddocks and threatened to break the bar and a road along it from Hopetoun to the Fitzgerald River National Park. In 1993 the bar was breached to release flood water, and the Inlet was briefly an estuary. Engineering measures designed to restore road access and prevent flooding are examined for their potential to restore the Inlet to its pre-1993 condition of a productive ecosystem. Recent clearing in the catchments of Culham Inlet and nearby estuaries in the south coast low rainfall area has increased river flow to them and appears to have caused their bars to break more frequently. Introduction (Fig 2) that is only known to have broken naturally once, In historic times Culham Inlet has been a coastal in 1849. The bar was broken artificially in 1920, but for lagoon on a semi-arid part of the south coast of Western over 70 years since then the Inlet has absorbed river flow Australia (Fig 1), separated from the sea by a high bar without the bar breaking, until 1993.
    [Show full text]
  • Land Hunger Warrnambool 1856
    Land Hunger: Warrnambool, 1856 By Glen Foster An historical game using role-play and cards for 8 players from upper Primary school to adults. © Glen Foster, 2018 1 Published by Port Fairy Historical Society 30 Gipps Street, Port Fairy. 3284. Telephone: (03) 5568 2263 Email: [email protected] Postal address: Port Fairy Historical Society P.O. Box 152, Port Fairy, Victoria, 3284 Australia Copyright © Glen Foster, 2018 Reproduction and communication for educational and private purposes Educational institutions downloading this work are able to photocopy the material for their own educational purposes. The general public downloading this work are able to photocopy the material for their own private use. Requests and enquiries for further authorisation should be addressed to Glen Foster: email: [email protected]. Disclaimers These materials are intended for education and training and private use only. The author and Port Fairy Historical Society accepts no responsibility or liability for any incomplete or inaccurate information presented within these materials within the poetic license used by the author. Neither the author nor Port Fairy Historical Society accepts liability or responsibility for any loss or damage whatsoever suffered as a result of direct or indirect use or application of this material. © Glen Foster, 2018 2 Table of Contents INTRODUCTION PAGE ‘Fun with Local History’ Series ..................................................................................................... 4 About the Game – Land Hunger: Warrnambool, 1856
    [Show full text]
  • GHCMA Newsletter JUNE 2021 FINAL
    In this edition: Projects continue within restrictions RCS consultation to begin and new funding welcomed Moyne River works begin Despite recent COVID-19 restrictions we have still been able More Bittern habitat protected to deliver some great outcomes with our partners in the Button Wrinkleworts survive first region, whilst some projects have been delayed or events summer in Dunkeld rescheduled. Spiny rice-flower planting day at This month’s newsletter has some stories of those Skipton partnerships, projects and achievements over the last DISA success in Hamilton month. There have been some great outcomes for our Vegetation monitoring field day threatened species such as the Australasian Bittern, Red- Estuary projects begin along the tailed Black Cockatoo, Button Wrinklewort and Spiny Riceflower, whilst the region continues to play a lead role coast with digital innovation in agriculture through hosting the Industry partnerships help second DISA Festival in Hamilton. cockatoos Victorian Landcare Awards open We were very pleased to hear that additional funding has been made available for RAMSAR, Flagship Waterways and for nominations Landcare in the recent State budget. This will be very welcome news for our partners, community groups and Glenelg Hopkins CMA Landcarers. www.ghcma.vic.gov.au From July 10 the public will have the opportunity to provide Telephone: (03) 5571 2526 feedback on the Regional Catchment Strategy. We welcome Email: [email protected] the feedback on the plan for land, water and biodiversity Postal: PO Box 502 management in our region through until 2027. Hamilton Victoria 3300 Adam Bester, CEO Glenelg Hopkins CMA CMA NEWS RCS public consultation period begins July 10 The period for public comment on the Glenelg Hopkins CMA Regional Catchment Strategy 2021- 2027 will begin on July 10, for four weeks.
    [Show full text]
  • ABSTRACT One Htmdy'ed and Ni.Nefu -Fout Lichen Species Are Reported from Westerm Australia Ui,Th Infornation on Their Dlstr
    WESTERNAUSTRALIAN HERBARIUM RESEARCH NOTES No. 7, 1982: 17-29 SYSTEMATICLIST WITH DISTRIBUTIONSOF THE LICHEN SPECIES OF WESTERNAUSTRALIA, BASEDON COLLECTIONSIN THE WESTERNAUSTRALIAN HERBARIUM By R.M. Richardson and D.H.S. Richardson Westem Austnalian Herbariun, GeoxgeSt., South Perth, l{ .A. 6151 (Present address: School of Botany, Trinity College, Dublin 2, Ireland). ABSTRACT One htmdy'edand ni.nefu -fout Lichen species are reported from WestermAustralia ui,th infornation on their dLstr"tbution. The Li,st of species is based on prouisionalLy deternrined speci.mens deposited in the Westerm Austt'alitt Herbar"iwn. ?he Lichen flora of the state i,s il:Luerse, the most Lzrcur"ient grotsth occurrLng i,n the south-uesltem comey. As LittLe i-s kraan of the Lichern of the z:emaird.er of the state " parti.cular:Ly the north-east, tnrch research remaina to be done on thei.r. taronom7 and distr"ibut ion. INTRODUCTION Little intensive research has been done on the lichen flora of Western Australia though collections were nade at quite an early date, The earliest taxononic publication appears to be that of Fries (1846), who described 25 species, the Tesult of collections by L. Preiss fron Rottnest Island and the south-west part of the state. The following year Taylor (1847) listed 1"6 lichens from Western Australia in his catalogue of the W.J. Hooker Herbariun. Mueller (1887) collated the early records and produced a list of Australian lichens, includlng two species from Western Australia which had not previously been recorded:. Cladia aggregata and CLadon'Laretipot u", the latter now segregated in Western Australia as Cla&ia ferdi,nandii.
    [Show full text]
  • Port Related Structures on the Coast of Western Australia
    Port Related Structures on the Coast of Western Australia By: D.A. Cumming, D. Garratt, M. McCarthy, A. WoICe With <.:unlribuliuns from Albany Seniur High Schoul. M. Anderson. R. Howard. C.A. Miller and P. Worsley Octobel' 1995 @WAUUSEUM Report: Department of Matitime Archaeology, Westem Australian Maritime Museum. No, 98. Cover pholograph: A view of Halllelin Bay in iL~ heyday as a limber porl. (W A Marilime Museum) This study is dedicated to the memory of Denis Arthur Cuml11ing 1923-1995 This project was funded under the National Estate Program, a Commonwealth-financed grants scheme administered by the Australian HeriL:'lge Commission (Federal Government) and the Heritage Council of Western Australia. (State Govenlluent). ACKNOWLEDGEMENTS The Heritage Council of Western Australia Mr lan Baxter (Director) Mr Geny MacGill Ms Jenni Williams Ms Sharon McKerrow Dr Lenore Layman The Institution of Engineers, Australia Mr Max Anderson Mr Richard Hartley Mr Bmce James Mr Tony Moulds Mrs Dorothy Austen-Smith The State Archive of Westem Australia Mr David Whitford The Esperance Bay HistOIical Society Mrs Olive Tamlin Mr Merv Andre Mr Peter Anderson of Esperance Mr Peter Hudson of Esperance The Augusta HistOIical Society Mr Steve Mm'shall of Augusta The Busselton HistOlical Societv Mrs Elizabeth Nelson Mr Alfred Reynolds of Dunsborough Mr Philip Overton of Busselton Mr Rupert Genitsen The Bunbury Timber Jetty Preservation Society inc. Mrs B. Manea The Bunbury HistOlical Society The Rockingham Historical Society The Geraldton Historical Society Mrs J Trautman Mrs D Benzie Mrs Glenis Thomas Mr Peter W orsley of Gerald ton The Onslow Goods Shed Museum Mr lan Blair Mr Les Butcher Ms Gaye Nay ton The Roebourne Historical Society.
    [Show full text]
  • Appendix 14.3 Fisheries Survey Findings Appendix 14.3 Fisheries Survey Findings
    Expansion of Hong Kong International Airport into a Three-Runway System Environmental Impact Assessment Report Appendix 14.3 Fisheries Survey Findings Appendix 14.3 Fisheries Survey Findings 1 Overview Between November 2012 and November 2013 (Table 1-1), fisheries surveys have been conducted for trawling, purse seining, gill netting and hand lining, ichthyoplankton, fish post-larvae and two site visits to the artificial reefs at Sha Chau and Lung Kwu Chau Marine Park (SCLKCMP) were made. Raw data of the surveys are provided in Annex A. The fisheries survey findings are presented in the following sections: Fisheries survey (fish trawl survey, purse seine survey, gill net survey, hand line survey); Artificial reef survey; Ichthyoplankton and fish post-larvae survey; Summary of fisheries surveys and ichthyoplankton and fish post-larvae surveys results (proposed land formation footprint, northern Chek Lap Kok waters, western Chek Lap Kok waters, The Brothers, SCLKCMP); Fisheries interview survey; Aquaculture interview survey; and Sites of fisheries importance based on literature review and fisheries survey findings. Table 1-1 Fisheries Survey Schedule from November 2012 to November 2013. Survey Types 2012 2013 Dry Season Wet Season Dry Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Fish trawl survey (Day time) 10 4 19 24 16, 20 Fish trawl survey (Night time) 22 11 27 30 9, 23 Purse seine survey 28,29 25 29 27 17 9, 23 Gill net survey 28,29 30 29 27 28 9, 23 Hand line survey 28,29 30 29 27 28 9, 23 Ichthyoplankton, Fish post-larvae and
    [Show full text]
  • APPENDIX K Final Report of an Aboriginal Heritage Survey of the BORR North and Central Project (Brad Goode & Associates, 2020)
    APPENDIX K Final report of an Aboriginal Heritage survey of the BORR North and Central Project (Brad Goode & Associates, 2020) Final report FINAL REPORT OF AN ABORIGINAL HERITAGE SURVEY OF THE BUNBURY OUTER RING ROAD (BORR) NORTH AND CENTRAL PROJECT: BRUNSWICK TO NORTH BOYANUP, WESTERN AUSTRALIA A report prepared for BORR Integrated Planning Team on behalf of Main Roads Western Australia By Mr Brad Goode Consulting Anthropologist 79 Naturaliste Terrace DUNSBOROUGH WA 6281 [email protected] Ms Louise Huxtable Consulting Anthropologist Brad Goode & Associates Pty Ltd [email protected] Mr Grant Preller Consulting Anthropologist Brad Goode & Associates Pty Ltd [email protected] Mrs Jacqueline Harris Consulting Archaeologist Brad Goode & Associates Pty Ltd [email protected] Report submitted February 2020 to: Dr Fionnuala Hannon Environment and Approvals Manager BORR IPT PO Box 2776 Cloisters Square 6850 The Registrar Department of Planning, Lands & Heritage 491 Wellington Street PERTH WA 6000 0 FINAL REPORT OF AN ABORIGINAL HERITAGE SURVEY OF THE BUNBURY OUTER RING ROAD (BORR) NORTH PROJECT: BRUNSWICK TO NORTH BOYANUP, WESTERN AUSTRALIA ACKNOWLEDGEMENTS The authors would like to thank the following organisations and individuals who helped with the management of this Aboriginal heritage survey: Dr Fionnuala Hannon – BORR IPT (Environment and Approvals Manager) Mr Liam Donnelly – BORR IPT (Principal Bridge Engineer) Ms Meranda Toner – BORR IPT (Senior Environmental Scientist) Ms Stacey Dorman – BORR IPT (Environmental Scientist) Mr Neil McCarthy – Main Roads Western Australia (Senior Environment Officer) Mr Robert Barnsley – Main Roads Western Australia (Acting Regional Manager) Mr Owen McLean – Main Roads Western Australia (Rural Road Planning Manager) Ms Tammy Mitchell – Main Roads Western Australia (Community Relations Manager) Mr Matt Swales – Main Roads Western Australia (Structures Design Engineer).
    [Show full text]
  • A Rehabilitation Manual for Australian Streams
    A Rehabilitation Manual for Australian Streams VOLUME 1 Ian D. Rutherfurd, Kathryn Jerie and Nicholas Marsh Cooperative Research Centre for Catchment Hydrology Land and Water Resources Research and Development Corporation 2000 Published by: Land and Water Resources Research and Cooperative Research Centre Development Corporation for Catchment Hydrology GPO Box 2182 Department of Civil Engineering Canberra ACT 2601 Monash University Telephone: (02) 6257 3379 Clayton VIC 3168 Facsimile: (02) 6257 3420 Telephone: (03) 9905 2704 Email: <[email protected]> Facsimile: (03) 9905 5033 WebSite: <www.lwrrdc.gov.au> © LWRRDC and CRCCH Disclaimer: This manual has been prepared from existing technical material, from research and development studies and from specialist input by researchers,practitioners and stream managers.The material presented cannot fully represent conditions that may be encountered for any particular project.LWRRDC and CRCCH have endeavoured to verify that the methods and recommendations contained are appropriate.No warranty or guarantee,express or implied,except to the extent required by statute,is made as to the accuracy,reliability or suitability of the methods or recommendations,including any financial and legal information. The information, including guidelines and recommendations,contained in this Manual is made available by the authors to assist public knowledge and discussion and to help rehabilitate Australian streams.The Manual is not intended to be a code or industry standard.Whilst it is provided in good faith,LWRRDC
    [Show full text]
  • Water Pluto Project Port Study
    WESTERN AUSTRALIA’S INTERNATIONAL RESOURCES DEVELOPMENT MAGAZINE March–May 2007 $3 (inc GST) Print post approved PP 665002/00062 approved Print post WATER The potential impact of climate change and lower rainfall on the resources sector PLUTO PROJECT Site works begin on the first new LNG project in WA for 25 years PORT STUDY Ronsard Island recommended as the site for a new Pilbara iron ore port DEPARTMENT OF INDUSTRY AND RESOURCES Investment Services 1 Adelaide Terrace East Perth • Western Australia 6004 Tel: +61 8 9222 3333 • Fax: +61 8 9222 3862 Email: [email protected] www.doir.wa.gov.au INTERNATIONAL OFFICES Europe European Office • 5th floor, Australia Centre Corner of Strand and Melbourne Place London WC2B 4LG • UNITED KINGDOM Tel: +44 20 7240 2881 • Fax: +44 20 7240 6637 Email: [email protected] India — Mumbai Western Australian Trade Office 93 Jolly Maker Chambers No 2 9th floor, Nariman Point • Mumbai 400 021 • INDIA Tel: +91 22 6630 3973 • Fax: +91 22 6630 3977 Email: [email protected] India — Chennai Western Australian Trade Office - Advisory Office 1 Doshi Regency • 876 Poonamallee High Road From the Director General Kilpauk • Chennai 600 084 • INDIA Tel: +91 44 2640 0407 • Fax: +91 44 2643 0064 Email: [email protected] Indonesia — Jakarta Western Australia Trade Office A climate for opportunities and change JI H R Rasuna Said Kav - Kuningan Jakarta 12940 • INDONESIA Tel: +62 21 5290 2860 • Fax: +62 21 5296 2722 Many experts and analysts are forecasting that 2007 will bring exciting new Email: [email protected] opportunities and developments in the resources industry in Western Australia.
    [Show full text]
  • Our Drinking Water Catchments
    Our drinking water catchments Our drinking water catchments traverse the suburbs of Perth, jarrah • Stay on existing roads and tracks and help to prevent soil erosion and and marri forests, banksia woodlands, pine plantations, and rural damage to wildlife habitat. Bush walking and cycling areas. Off-road driving or cycling can damage vegetation and loosen soil on tracks. The environment of the region is made up of natural communities Surface or groundwater collects in streams, wetlands, reservoirs or Soil can then be washed into streams with the next rains. This can put our including forests and woodlands, wildflowers, granite outcrops, groundwater aquifers. As water drains through the catchment it drinking water at risk because soil particles floating in the water can reduce the rivers, beaches, estuaries and internationally important wetlands for can pick up bacteria and other microbes, soil, litter and chemicals, effectiveness of the disinfectant used to kill bacteria and other microbes in migratory birds. such as spilled fuel. drinking water. Walk tracks and off-road cycle trails wind through these landscapes • Camp only at designated camp sites. By protecting our drinking water catchments from these pollutants to give walkers and cyclists many opportunities to experience some we will ensure the availability of safe, clean drinking water. These are usually signposted in National Parks, local parks, State forest or bush of the beauty and diversity of the south-west's unique natural areas. environment. Keeping our drinking water clean When you have found your spot, camp in existing cleared areas and use the toilet facilities provided to The Bibbulmun Track and Munda Biddi Cycle Trail, two of the safeguard the environment.
    [Show full text]