Clare Valley Water Allocation Plan
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Northern and Yorke Natural Resources Management Board Water Allocation Plan for the Clare Valley Prescribed Water Resources Area May 2009 Water Allocation Plan for the Clare Valley Prescribed Water Resources Area Prepared by the Northern and Yorke Natural Resources Management Board May 2009 Northern and Yorke Natural Resources Management Board 41-49 Eyre Road, Crystal Brook SA 5523 PO Box 175, Crystal Brook SA 5523 Telephone National (08) 8636 2361 International +61 8 8636 2361 Fax National (08) 8636 2371 International +61 8 8636 2371 Website www.nynrm.sa.gov.au/ Disclaimer The Northern and Yorke Natural Resources Management Board and its employees do not warrant or make any representation regarding the use, or results of the use, of the information contained herein as regards to its correctness, accuracy, reliability, currency or otherwise. The Northern and Yorke Natural Resources Management Board and its employees expressly disclaim all liability or responsibility to any person using the information or advice. Information contained in this document is correct at the time of writing. © Government of South Australia, through the Northern and Yorke Natural Resources Management Board 2009 This work is Copyright. Apart from any use permitted under the Copyright Act 1968 (Cwlth), no part may be reproduced by any process without prior written permission obtained from the Northern and Yorke Natural Resources Management Board. Requests and enquiries concerning reproduction and rights should be directed to the General Manager, Northern and Yorke Natural Resources Management Board, PO Box 175, Crystal Brook SA 5523. ISBN 978-0-9806143-1-2 Preferred way to cite this publication Northern and Yorke Natural Resources Management Board, 2009, Water Allocation Plan for the Clare Valley Prescribed Water Resources Area. Government of South Australia, through the Northern and Yorke Natural Resources Management Board, Crystal Brook, South Australia. Download this document at: www.nynrm.sa.gov.au/ Contents 1 Introduction ............................................................................... 1 1.1 Background 1 1.2 Clare Valley Prescribed Water Resource Area 1 1.3 Description of the prescribed water resources 2 1.4 Management zones 5 2 Water dependent ecosystems and environmental water requirements ........................................................................... 11 2.1 Water dependent ecosystems and environmental water requirements of the Broughton River catchment 11 2.2 Water dependent ecosystems and environmental water requirements of the Wakefield River catchment 14 2.3 Phreatophytes 25 2.4 Water Dependent Fauna 26 2.5 Water quality 28 3 Effects on other water resources .......................................... 29 4 Capacity of the resource to meet demands .......................... 31 4.1 Demands 31 4.2 Capacity of surface water and watercourses 34 4.3 Capacity of the underground water resource 35 4.4 Capacity of imported water 36 4.5 Capacity of all water resources to meet demands 36 4.6 Impact of climate change on capacity of water resources 37 5 Water allocation and transfer objectives .............................. 41 5.1 Objectives 42 6 Water allocation criteria.......................................................... 43 6.1 General principles 43 6.2 General principles for volumetric conversion of existing allocations 43 6.3 General principles for allocation after the date of adoption 46 6.4 Allocation of underground water after the date of adoption 47 6.5 Allocation of surface water and water from watercourses after the date of adoption 49 6.6 Allocation of artificially recharged water 50 6.7 Exchange of water for use of imported water 51 i 7 Transfer criteria ....................................................................... 57 7.1 General transfer principles 57 7.2 Transfers of underground water 57 7.3 Transfers of surface water and water from watercourses 57 7.4 Allocations that may not be transferred or converted 58 7.5 Variation of an authorisation to use imported water 59 8 Permits ..................................................................................... 61 8.1 Objectives 61 8.2 Water storage and diversions 62 8.3 Building or structure in a watercourse, lake or on a floodplain 66 8.4 Draining or discharging water into a watercourse or lake 67 8.5 Object or solid material in a watercourse or lake 68 8.6 Object or solid material on the floodplain 69 8.7 Destroying vegetation 70 8.8 Excavation or removal of rock, sand or soil 70 8.9 Use of imported water 71 8.10 Wells 75 8.11 Draining or discharging water into a well 76 8.12 Using effluent in the course of carrying on a business 78 8.13 Summary of water affecting activities requiring permits 79 9 Taking and use of other water resources ............................. 83 10 Monitoring ................................................................................ 85 10.1 Current monitoring 85 10.2 Monitoring the status and capacity of the water resource 86 10.3 Recording annual water use at property level 89 11 Consistency with Other Plans and Legislation .................... 91 12 Definitions and Abbreviations ............................................... 93 12.1 Definitions 93 12.2 Abbreviations 95 Appendix 1: Underground water exclusion zone around townships in the Prescribed Area ii Figures Figure 1. Location of Clare Valley Prescribed Water Resources Area ......................... 6 Figure 2. The Clare Valley Prescribed Water Resources Area .................................... 7 Figure 3. Yields of wells in the Prescribed Area ........................................................... 8 Figure 4. Salinity of wells in the Prescribed Area ......................................................... 9 Figure 5. The 13 sub-regions in the Prescribed Area ................................................. 10 Figure 6. Distribution of dams in the prescribed area ................................................. 39 Figure 7. Permanent pool underground water exclusion zones in the Prescribed Area ............................................................................................................. 54 Figure 8. Restricted watercourses .............................................................................. 55 Figure 9. Watercourses that permits pursuant to section 127(5)(b),(c),(d),(f),(g) and (h)of the Act apply ....................................................................................... 56 Tables Table 1. Hill River rainfall and observed flows 1969 - 2004 ........................................ 4 Table 2. Hutt River rainfall and observed flows 1969 – 2004 ...................................... 4 Table 3. Wakefield River rainfall and observed flows 1969 - 2004 ............................. 5 Table 4. Flow requirements of the Hill River ............................................................. 16 Table 5. Flow requirements of the upper Hutt River from the confluence of Armagh Creek to the confluence of the Broughton River ......................................... 17 Table 6. Flow requirements of the lower Hutt River from the road bridge 8 km south of Spalding to the Broughton River confluence ........................................... 18 Table 7. Flow requirements of the Broughton River between the Hill River confluence and Yacka ................................................................................................... 19 Table 8. Roles of flow bands in geomorphic zones ................................................... 23 Table 9. Environmental water requirements of the Wakefield River. ........................ 25 Table 10. Fish observed in the Broughton and Wakefield Catchments ...................... 27 Table 11. Dam numbers and capacities by sub-region ............................................... 33 Table 12. Underground water monitoring .................................................................... 87 Table 13. Monitoring of surface water quality, water flows and water dependent ecosystems ................................................................................................. 87 Table 14. Monitoring of other water sources ............................................................... 88 iii iv 1 Introduction 1.1 Background This document is the Water Allocation Plan for the Clare Valley Prescribed Water Resources Area (Prescribed Area), pursuant to section 76 of the Natural Resources Management Act 2004 (the Act). This Plan replaces the Water Allocation Plan for the Clare Valley Prescribed Water Resources Area adopted by the Minister for Water Resources on 22 December 2000. The Act requires the Northern and Yorke Natural Resources Management Board (the Board) to prepare a water allocation plan for each of the prescribed water resources in its area. All wells and watercourses within the Prescribed Area bounded by the bold unbroken line in General Registry Office (GRO) Plan Number 368/96 were prescribed on 25 July 1996 under the provisions of the Water Resources Act 1990. The area bounded by the same line in GRO Plan Number 368/96 was declared a surface water prescribed area on 28 October 1999 under the provisions of the Water Resources Act 1997 to address concerns about the ability of surface water run-off to sustain irrigation requirements while also contributing to the flow of watercourses in an amount necessary to protect the health of the watercourses and dependent ecosystems. The purpose of the Plan is to provide criteria by which decisions about the regulation and use of water are