Goyder Regional Council Eudunda IWMP GOYDER: INTEGRATED WATER MANAGEMENT PLAN (IWMP) FOR EUDUNDA January 2012 Regional Council of Goyder AWE Document History and Status Issue Rev. Issued to Qty Date Reviewed Approved 1 V5 T. Wood 1 30/9/11 GF GF Final V6 T.Wood 1 25/01/12 GF GF Printed: January 25, 2012 Last Saved: September 30, 2011 File Name: 11105 R001 IWMP Eudunda v6 120125.docx Project Manager: Ben Taylor Client: Regional Council of Goyder Project: Integrated Water Management Plan for Eudunda Name of Document: Integrated Water Management Plan for Eudunda Document Version: v6 Job Number: 11105 11105 Integrated Water Management Plan for Eudunda i AWE Regional Council of Goyder ii 11105 Integrated Water Management Plan for Eudunda Regional Council of Goyder AWE Table of Contents 1 Introduction ................................................................................................................................................. 1 1.1 Total Water Cycle Management ....................................................................................................... 2 1.2 Purpose of the Plan ........................................................................................................................... 2 1.3 IWMP Objectives .............................................................................................................................. 4 2 The Township of Eudunda ........................................................................................................................... 6 2.1 Climate .............................................................................................................................................. 6 2.2 Future Township Growth Scenario ................................................................................................... 6 2.2.1 Residential Land Supply and Demand .............................................................................................. 7 2.2.2 Potential Areas for Future Residential Development ...................................................................... 7 2.2.3 Potential Lot Yield for Identified growth areas and Infill Greenfield areas ...................................... 7 2.2.4 Potential Development Constraints ................................................................................................. 7 3 Strategic IWMP Objectives .......................................................................................................................... 9 3.1 Objectives and Measures .................................................................................................................. 9 4 Current and Potential Water Resources Use and Recommendations ...................................................... 12 4.1 Water Balance ................................................................................................................................ 12 4.1.1 Anticipated Future Water Demand ................................................................................................ 13 4.2 Potable Water ................................................................................................................................. 14 4.2.1 Roof Runoff .................................................................................................................................... 14 4.3 Groundwater .................................................................................................................................. 15 4.3.1 Geology and Hydrogeology ............................................................................................................ 15 4.4 Water Dependent Ecosystems ........................................................................................................ 16 4.5 Stormwater ..................................................................................................................................... 19 4.5.1 Surface Drainage and Watercourses .............................................................................................. 19 4.5.2 Existing Stormwater Infrastructure ................................................................................................ 19 4.5.3 Stormwater Management Options ................................................................................................ 20 4.5.4 Stormwater Harvesting Opportunities ........................................................................................... 20 4.5.5 Stormwater Quality ........................................................................................................................ 21 4.5.6 Wastewater .................................................................................................................................... 23 4.6 Climate Change Impacts ................................................................................................................. 25 5 Implementation Plan ................................................................................................................................. 26 5.1 Overview ......................................................................................................................................... 26 5.2 Immediate Recommended Actions ................................................................................................ 27 5.2.1 Eudunda ......................................................................................................................................... 27 5.2.2 Regional .......................................................................................................................................... 28 5.3 Intermediate Actions ...................................................................................................................... 36 5.3.1 Eudunda ......................................................................................................................................... 36 5.3.2 Regional .......................................................................................................................................... 36 5.4 Strategic and Long Term Actions .................................................................................................... 38 11105 Integrated Water Management Plan for Eudunda iii AWE Regional Council of Goyder 5.4.1 Eudunda ......................................................................................................................................... 38 5.4.2 Regional .......................................................................................................................................... 38 5.5 Monitoring and Review .................................................................................................................. 40 6 Funding Opportunities .............................................................................................................................. 42 6.1 Strengthening Basin Communities – Water Saving Initiatives ........................................................ 42 6.2 South Australian Murray Darling Basin NRM Board ....................................................................... 42 6.3 Stormwater Harvesting and Reuse Projects ‐ Third Competitive Grants Round ............................ 42 6.4 Regional Development Australia .................................................................................................... 42 7 References ................................................................................................................................................. 44 List of Tables Table 2‐1 Average Rainfall Statistics for Eudunda Calculated Over All Years of Data ............................................ 6 Table 2‐2 Eudunda Lot Yields, Potential Additional Population and Water Demand. ............................................ 7 Table 3‐1 Integrated Water Resource Management Objectives, Strategies and Measures ................................ 10 Table 4‐1 Current Water Use in Eudunda ............................................................................................................. 13 Table 4‐2 Potential Future Water Resource Demand in Eudunda........................................................................ 14 Table 4‐3 Eudunda DES Borehole Details ............................................................................................................. 17 Table 4‐4 Monthly Climate Change Scenario Data ............................................................................................... 25 Table 5‐1 Description of Priority Rankings ........................................................................................................... 26 Table 5‐2 Immediate IWMP Recommended Actions for the next 1‐5 Years: Eudunda ........................................ 33 Table 5‐3 Immediate IWMP Recommended Actions for the next 1‐5 Years: Regional ........................................ 34 Table 5‐4 Intermediate IWMP Recommended Actions for the next 5‐10 Years: Eudunda .................................. 37 Table 5‐5 Intermediate IWMP Recommended Actions for the next 5‐10 Years: Regional .................................. 37 Table 5‐6 Strategic and Long Term IWMP Recommended Actions for the next 10‐30 Years: Eudunda .............. 39 Table 5‐7 Strategic and Long Term IWMP Recommended Actions for the next 10‐30 Years: Regional .............. 39 List of Figures Figure 1‐1 Total Water Cycle .................................................................................................................................