Halls Creek Water Reserve Water Source Protection Plan
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HALLS CREEK WATER RESERVE WATER SOURCE PROTECTION PLAN Halls Creek Town Water Supply Important information The Halls Creek Water Reserve water source protection plan (2002, WRP no.48) was reviewed in 2012. Please ensure you read the Halls Creek drinking water source protection review (2012, WRP no.123) alongside the 2002 plan to obtain all of the information about this drinking water source. The 2012 review considers changes that have occurred in and around the Halls Creek Water Reserve since the completion of the 2002 Halls Creek water source protection plan. The addition of seven new bores will require wellhead protection zones. Additional recommendations have been prepared to ensure the ongoing protection of this public drinking water source area. You can find the 2012 Halls Creek drinking drinking water source protection review at www.water.wa.gov.au > publications > find a publication > series browse > water resource protection plan; or by contacting the Department of Water on +61 8 6364 7600 or at www.water.wa.gov.au/Managing+water/Drinking+water/default.aspx. ______________________________________________________________________________________________ HALLS CREEK WATER RESERVE WATER SOURCE PROTECTION PLAN Halls Creek Town Water Supply Water and Rivers Commission Policy and Planning Division WATER AND RIVERS COMMISSION WATER RESOURCE PROTECTION SERIES REPORT NO WRP 48 2002 i ______________________________________________________________________________________________ Acknowledgments Contribution Personnel Title Organisation Program Direction Tony Laws Manager, Water Quality Protection Water and Rivers Commission Supervision Ross Sheridan Program Manager, Protection Planning Water and Rivers Commission Report Preparation Mark Warner Environmental Engineer Water and Rivers Commission Report Preparation Adrian Tomlinson Senior Water Resources Planner Water and Rivers Commission Report Preparation Nicholas Edwards Environmental Officer Water and Rivers Commission Report Preparation Angus Davidson Supervising Hydrogeologist Water and Rivers Commission Drafting Nigel Atkinson Drafting Contractor McErry Digital Mapping Pty Ltd For more information contact: Program Manager, Protection Planning Water Quality Protection Branch Water and Rivers Commission 3 Plain Street EAST PERTH WA 6004 Telephone: (08) 9278 0300 Facsimile: (08) 9278 0585 Reference Details The recommended reference for this publication is: Water and Rivers Commission 2002, Halls Creek Water Reserve Water Source Protection Plan: Halls Creek Town Water Supply, Water and Rivers Commission, Water Resource Protection Series No WRP 48. ISBN 0-7309-7588-6 ISSN 1326-7442 Printed on recyclable stock July, 2002 Cover Photograph: China Walls Creek ii ______________________________________________________________________________________________ Foreword Water source protection plans Water quality protection framework Water Source Protection Plans establish the level of The Water and Rivers Commission is responsible for protection required in Water Reserves. Catchment managing and protecting Western Australia’s water protection of water sources is considered a fundamental resources. The Commission has developed policies for part of ensuring the provision of a safe drinking water the protection of public drinking water source areas supply. that include three levels of priority classification. Water Source Protection Plans identify sources of Priority 1 (P1) source protection areas are defined to contamination that should be investigated and set out ensure that there is no degradation of the water source. programs for management of the resource. Water P1 areas are declared over land where the provision of Source Protection Plans are developed in consultation the highest quality public drinking water is the prime with affected landowners and industry groups and beneficial land use. P1 areas would typically include relevant government agencies. land under Crown ownership. P1 areas are managed in accordance with the principle of risk avoidance and so Proclaiming Water Reserves under the Country Areas land development is generally not permitted. Water Supply Act 1947 protects the quality of water sources in country Western Australia. The Act’s by- Priority 2 (P2) source protection areas are defined to laws enable the Water and Rivers Commission to ensure that there is no increased risk of pollution to the control potentially polluting activities, regulate land water source. P2 areas are declared over land where use, inspect premises and take steps to prevent or clean low intensity development (such as rural) already up pollution. exists. Protection of public water supply sources is a high priority in these areas. P2 areas are managed in The Water and Rivers Commission aims to work pro- accordance with the principle of risk minimisation and actively with planning agencies to incorporate water so some conditional development is allowed. protection in the land planning process. Decisions on land use zoning and subdivision applications have a Priority 3 (P3) source protection areas are defined to significant impact on the protection of water sources. minimise the risk of pollution to the water source. P3 The Commission supports the amendment of Town areas are declared over land where water supply Planning Schemes and Development Strategies that sources need to co-exist with other land uses such as reflect land use compatible with Water Source residential, commercial and light industrial Protection Plans. developments. Protection of P3 areas is achieved through management guidelines rather than restrictions This Water Source Protection Plan provides a basis for on land use. If the water source does become establishing compatible land uses in the Halls Creek contaminated, then water may need to be treated or an Water Reserve and is a mechanism for practical alternative water source found. implementation of the Commission’s protection strategies. Local government decision-makers, State In addition to priority classifications, well-head planning authorities and operational staff are protection zones are defined to protect the water source encouraged to recognise this document as a basis for from contamination in the immediate vicinity of ensuring the long-term protection of this groundwater production bores. Well-head protection zones are resource for generations to come. usually circular, with a radius of 500 metres in P1 areas and 300 metres in P2 and P3 areas. These areas do not extend outside the water reserves. Special conditions apply within these zones. iii ______________________________________________________________________________________________ Contents Summary 1 Recommendations 14 1. Introduction 2 Implementation strategy 15 2. Physiography 2 References 17 3. Hydrogeology 2 Glossary 18 4. Scheme description 5 5. Existing and proposed land use 5 Appendices 6. Potential for contamination 7 Appendix 1 Land use compatibility in Public Drinking Water Source Areas............................................21 7. Proposed proclaimed area 10 Appendix 2 Photographs of land use within the Halls 8. Management of potential water Creek Water Reserve..........................................28 quality risks 10 Photographs 8.1 Protection objectives 11 Plate 1: Bore 3/92 29 8.2 Best management practices 11 Plate 2: Stock crate wash-down 29 Plate 3: Cattle dip tank 30 8.3 Land use planning 12 Plate 4: Duncan Highway 30 8.4 Emergency response 12 8.5 Land use, potential water quality risks and Figures recommended strategies 12 Figure 1. Halls Creek locality map..............................3 Figure 2. Geology of Halls Creek Wellfield.................4 Figure 3. Halls Creek Wellfield....................................6 Figure 4. Potential contamination threats .....................9 Figure 5. Proposed Halls Creek Water Reserve .........13 iv Summary Halls Creek is in the Shire of Halls Creek, 300 Due to the various land uses within the Water Reserve, kilometres south of Kununurra in the Kimberley the priority classification will differ across the Reserve. region. It services pastoral, tourism and extractive The direct recharge areas of the King Leopold industries in surrounding areas. Sandstone should be classified for Priority 1 Source Protection. The pastoral grazing activities are The Halls Creek town water supply is obtained from a considered compatible with this level of protection. Water Corporation wellfield which draws groundwater This area includes the stock holding facilities and the from an aquifer in the King Leopold Sandstone. town wastewater treatment plant. These are considered to be non-conforming land uses and should employ The aquifer is vulnerable to contamination from best management practice to protect water quality. In overlying land uses. Therefore, careful management of the future these activities could be relocated to land use and development in the recharge area of the maximise groundwater protection. aquifer is necessary to protect the resource. The special rural zone should be classified for Priority Pastoral grazing activities are the main land use in the 2 Source Protection and the remainder of the Reserve, aquifer’s recharge area. These activities are not which includes the urban area of Halls Creek, should considered to pose a risk to the water source quality. be classified for Priority 3 Source Protection. The Halls Creek Water Reserve was declared in 1982 Signs indicating the location of the reserve should be under the Country Areas Water Supply Act