Water Allocation Plan Western Mount Lofty Ranges
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Water Allocation Plan WESTERN MOUNT LOFTY RANGES Water Allocation Plan Allocation Water WESTERN MOUNT LOFTY R ANGES 92356 WMLR Water Allocation Plan COVER FIN PRINT.indd 1 9/10/13 9:07 AM Licensed under Creative Commons Attribution 3.0 Australia License www.creativecommons.org/licenses/by/3.0/au Copyright Owner: Crown in right of the State of South Australia 2013 © Government of South Australia 2013 Produced by: Adelaide and Mount Lofty Ranges Natural Resources Management Board Maps produced by: Department for Water (now Department of Environment, Water and Natural Resources) Projection: Transverse Mercator Datum: Geocentric Datum of Australia 1994 Source: Department for Water (now DEWNR) 92356 WMLR Water Allocation Plan COVER FIN PRINT.indd 2 9/10/13 9:07 AM Water Allocation Plan WESTERN MOUNT LOFTY RANGES Western Mount Lofty Ranges Water Allocation Plan | 3 Contents 1. Introduction 8 3.3. Northern Adelaide Plains PWA 63 1.1. The Prescribed Area 8 3.4. Barossa PWRA 65 1.1.1. Western Mount Lofty Ranges Prescribed 8 3.5. Marne Saunders PWRA 65 Water Resources Area 3.6. Eastern Mount Lofty Ranges PWRA 65 1.1.2. Little Para Proclaimed Watercourse 8 3.7. River Murray Prescribed Watercourse 66 1.2. McLaren Vale Prescribed Wells Area 8 4. Assessment of demand on 67 1.3. Water allocation planning 11 water resources 1.3.1. Water licences and allocations 11 4.1. Needs of water users 67 1.3.2. Existing users 11 4.2. Demand 67 1.3.3. New use 11 4.2.1. Historical demand 67 1.4. Water resources and catchments in the 11 4.3. Present demand 69 Prescribed Area 4.3.1. Water use for licensed purposes 69 1.4.1. Types of water resources 11 4.3.2. Water use for non-licensed purposes 72 1.4.2. Central Hills Catchments 12 4.4. Climate change 73 1.4.3. Willunga Basin and Fleurieu 16 Peninsula Catchments 4.5. Future demand 73 1.4.4. Watercourses across the plains 20 5. Capacity of the water resources 74 2. Needs of water-dependent ecosystems 23 in the Prescribed Area 5.1. Capacity of underground water 74 2.1. Introduction 23 5.2. Underground water extraction limit 74 2.1.1. Environmental water requirements 23 and provisions 5.3. Capacity of surface water and watercourse water 84 2.1.2. Water-dependent ecosystems 23 5.4. Surface water and watercourse water 84 extraction limits 2.1.3. Flow regime 23 5.5. Diversion limits 85 2.2. Environmental water requirements 25 5.6. Capacity of watercourses across the plains 121 2.2.1. Underground water-dependent 25 ecosystems 5.7. Watercourses across the plains extraction limits 121 2.2.2. Determining environmental 25 6. Water Allocation criteria 126 water requirements 6.1. Objectives 126 2.2.3. Measuring environmental 47 water requirements 6.2. General allocation criteria 126 2.2.4. Capacity of the water resource to meet 53 6.3. Allocation of underground water 126 environmental water requirements 6.4. Allocation of surface water and watercourse 128 2.2.5. Environmental water quality requirements 55 water (not from a watercourse across the plains) 2.3. Environmental water provisions 56 6.5. Allocation of water from watercourses 132 across the plains 2.3.1. Acceptable level of risk 56 6.6. Variation of water licences 134 2.3.2. Determination of environmental 56 water provisions 7. Transfer criteria 135 2.3.3. Environmentally sustainable 57 7.1. Objectives 135 extraction limit 7.2. General transfer criteria 135 2.3.4. Underground water-dependent 57 7.3. Transfer of underground water allocations 135 ecosystems 7.4. Transfer of surface water and watercourse 136 2.4. Environmental water requirements and 58 water allocations provisions for wetlands 2.4.1. Fleurieu Wetlands 58 8. Permits 137 2.4.2. Central Hills wetlands 60 8.1. Objectives 137 2.5. Environmental water requirements and 60 8.2. General permit criteria 137 provisions for watercourses across the plains 8.3. Well permits 138 2.5.1. Environmental water provisions from 62 8.4. Draining and discharging water into a well 139 SA Water reservoirs 8.5. Water storages and diversions 141 3. Effects on other water resources 63 8.6. Commercial forestry 144 3.1. McLaren Vale PWA 63 3.2. Central Adelaide PWA 63 Western Mount Lofty Ranges Water Allocation Plan | 5 9. Monitoring and evaluation 147 Figure 5.1 Underground water management zones 75 of the South Para River catchment 10. Recommendations for other plans 153 Figure 5.2 Underground water management zones 76 or legislation of the Little Para River catchment 10.1. Introduction 153 Figure 5.3 Underground water management zones of 77 10.2. Development regulations 153 the River Torrens catchment 10.3. Better Development Plan Project 153 Figure 5.4a Underground water management zones 78 10.4. Council development plans 153 of the (Northern) Onkaparinga catchment 10.5. Land and Business (Sale and Conveyancing) 154 Figure 5.4b Underground water management zones 79 Regulations 2010 of the (Southern) Onkaparinga catchment 11. Abbreviations 155 Figure 5.5 Underground water management zones 80 of the Fleurieu Peninsula catchments 12. References 156 Figure 5.6 Surface water management zones of the 86 Appendix A – Glossary 157 Little Para River catchment Figure 5.7 Main watercourses of the 87 Appendix B – Other figures 166 Little Para River catchment Appendix C – F- values for Fleurieu 168 Figure 5.8a Surface water management zones of 88 Peninsula catchments the (Northern) South Para River catchment Figure 5.8b Surface water management zones of 89 Appendix D – Fleurieu Peninsula 169 the (Eastern) South Para River catchment Catchments mean annual rainfall Figure 5.8c Surface water management zones of 90 Appendix E – Unit threshold flow rates 170 the (Central) South Para River catchment for Fleurieu Peninsula catchments Figure 5.9 Main watercourses of the South Para 91 River catchment FIGURES Figure 5.10a Surface water management zones of 92 Figure 1.1 Western Mount Lofty Ranges PWRA 9 the (Eastern) River Torrens catchment Figure 1.2 Catchments in the Western Mount 10 Figure 5.10b Surface water management zones of 93 Lofty Ranges PWRA the (Western) River Torrens catchment Figure 1.3 South Para River catchment 12 Figure 5.11 Main watercourses of the 94 Figure 1.4 Little Para River catchment 13 River Torrens catchment Figure 1.5 River Torrens catchment 14 Figure 5.12a Surface water management zones of 95 the (Upper Northern) Onkaparinga Figure 1.6 Onkaparinga River catchment 15 River catchment Figure 1.7 Willunga Basin catchment 16 Figure 5.12b Surface water management zones 96 Figure 1.8 Myponga River catchment 17 of the (Northern) Onkaparinga Figure 1.9 Hindmarsh and Inman Rivers catchment 18 River catchment Figure 1.10 Fleurieu Coastal catchment 19 Figure 5.12c Surface water management zones of the 97 Figure 1.11 Gawler River Prescribed Watercourse 21 (Central) Onkaparinga River catchment Figure 1.12 Little Para Proclaimed Watercourse 21 Figure 5.12d Surface water management zones of 98 the (Southern) Onkaparinga River catchment Figure 1.13 River Torrens/Karrawirra Parri 22 Prescribed Watercourse Figure 5.13 Main watercourses of the Onkaparinga 99 River catchment Figure 1.14 Onkaparinga River Prescribed Watercourse 22 Figure 5.14a Surface water management zones of 100 Figure 2.1 Flow types 24 the (Northern) Willunga Basin catchment Figure 2.2 Reach types 27 Figure 5.14b Surface water management zones of 101 Figure 2.3 Fleurieu wetlands 59 the (Western) Willunga Basin catchment Figure 2.4 Central Hills wetlands 61 Figure 5.14c Surface water management zones of the 102 Figure 3.1 Neighbouring Prescribed Areas 64 (Central) Willunga Basin catchment Figure 5.14d Surface water management zones of the 103 Figure 4.1 Estimated total irrigated land area by 70 (Southern) Willunga Basin catchment crop type Figure 5.15 Main watercourses of the Willunga 104 Basin catchment 6 | Western Mount Lofty Ranges Water Allocation Plan Figure 5.16 Surface water management zones of 105 Table 4.5b Irrigation land use change in the 71 the Fleurieu Peninsula catchment Fleurieu Peninsula Region 1970-2004 Figure 5.17 Main watercourses of the Myponga 106 Table 5.1 Underground water extraction limits in 81 River catchment the South Para River catchment Figure 5.18 Main watercourses of the Hindmarsh 107 Table 5.2 Underground water extraction limits in 81 and Inman Rivers catchment the Little Para River catchment Figure 5.19 Main watercourses of the Fleurieu 108 Table 5.3 Underground water extraction limits in 82 Coastal catchment the River Torrens catchment Figure 5.20 Watercourse water management zones of 122 Table 5.4 Underground water extraction limits in 83 the Gawler River Prescribed Watercourse the Onkaparinga River catchment Figure 5.21 Watercourse water management zones of 123 Table 5.5 Underground water extraction limits in 83 the Little Para Proclaimed Watercourse the Fleurieu Peninsula catchments Figure 5.22 Watercourse water management zones 124 Table 5.6 Extraction and diversion limits for the 109 of the River Torrens/Karrawirra Parri surface water management zones of the Prescribed Watercourse South Para River catchment Figure 5.23 Watercourse water management zones 125 Table 5.7 Extraction and diversion limits for the 111 of the Onkaparinga River surface water management zones of the Prescribed Watercourse Little Para River catchment Figure B.1 Third order (and above) watercourses 166 Table 5.8 Extraction and diversion limits for the 112 Figure B.2 Third order (and above) watercourses 167 surface water management zones of the underlain by Permian Sand Aquifers River Torrens catchment TABLES Table 5.9 Extraction and diversion limits for the