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Campaspe River CAMPASPE RIVER ENVIRONMENTAL WATERING PLAN ASSESSMENT AREA: CAMPASPE RIVER, CAMPASPE WEIR TO MURRAY RIVER PREPARED FOR THE NORTHERN VICTORIA IRRIGATION RENEWAL PROJECT July 2010 Campaspe River Environmental Watering Plan DOCUMENT HISTORY AND STATUS Version Date Issued Prepared By Reviewed By Date Approved Version 1 6 March 2010 Michelle Bills and Rohan Hogan Emer Campbell 9 March 2010 Version 2 9 March 2010 Michelle Bills and Rohan Hogan Technical Reference 15 March 2010 Group Version 3 22 March 2010 Michelle Bills and Rohan Hogan Emer Campbell 29 March 2010 Version 4 6 April 2010 Michelle Bills and Rohan Hogan NVIRP TAC 13 April 2010 Version 5 13 April 2010 Michelle Bills and Rohan Hogan NVIRP ERP 27 April 2010 Version 6 10 May 2010 Michelle Bills and Rohan Hogan NVIRP ERP & TAC 12 May 2010 Version 7 21 May 2010 Michelle Bills and Rohan Hogan NVIRP ERP 28 May 2010 Version 8 28 May 2010 Michelle Bills and Rohan Hogan NVIRP ERP 28 May 2010 Version 9 4 June 2010 Michelle Bills and Rohan Hogan NVIRP 4 June 2010 Version 10 8 July 2010 Michelle Bills and Rohan Hogan NVIRP & DEWHA 9 July 2010 DISTRIBUTION Version Date Quantity Issued To Version 1 6 March 2010 Email Emer Campbell Version 2 9 March 2010 Email Technical Reference Group Version 3 29 March 2010 Email NVIRP Version 4 6 April 2010 Email NVIRP Version 5 13 April 2010 Email NVIRP Version 6 10 May 2010 Email NVIRP Version 7 21 May 2010 Email NVIRP Version 8 28 May 2010 Email NVIRP Version 9 4 June 2010 Email NVIRP Version 10 8 July 2010 Email NVIRP & DEWHA DOCUMENT MANAGEMENT Printed: 9 July 2010 Last saved: 8 July 2010 12:35 PM File name: NCCMA-35389 – Campaspe River EWP_V10 Authors: Michelle Bills and Rohan Hogan Name of organisation: North Central CMA Name of document: Campaspe River (Long-term) Environmental Watering Plan Document version: Final, Version 10 Document manager: 35389 For further information on any of the information contained within this document contact: North Central Catchment Management Authority PO Box 18 Huntly Vic 3551 T: 03 5440 1800 F: 03 5448 7148 E: [email protected] www.nccma.vic.gov.au © North Central Catchment Management Authority, 2010 Front cover photo: Campaspe River, 6 th October 2009, North Central CMA The Campaspe River Environmental Watering Plan is a working document, compiled from the best available information. It will be subject to revision in the future as new information becomes available. This publication may be of assistance to you, but the North Central Catchment Management Authority and its employees do not guarantee that the publication is without flaw of any kind, or is wholly appropriate for your particular purposes and therefore disclaims all liability for any error, loss or other consequence which may arise from you relying on information in this publication. Please cite this document as: NCCMA (2010). Campaspe River Environmental Watering Plan, Prepared for the Northern Victoria Irrigation Renewal Project, North Central Catchment Management Authority, Huntly, Victoria. Campaspe River Environmental Watering Plan EXECUTIVE SUMMARY The Campaspe River Environmental Watering Plan (EWP) documents the approach to mitigating the potential impacts of the Northern Victoria Irrigation Renewal Project (NVIRP) due to significant reductions in channel outfalls to the waterway. This EWP refers to the Campaspe River from Campaspe Weir to confluence with the Murray River, or reaches 3 and 4 of the environmental flow recommendations. It also includes an assessment of the Campaspe Billabong and Unnamed Creek (Campaspe River Reach 4). The following components are the primary means by which the commitment of no net environmental loss for the Campaspe River will be achieved for the NVIRP project. The main conclusions are summarised below. Defining the environmental values of Campaspe River The Campaspe River supports a range of environmental values and are described specifically for the lower Campaspe River (e.g. Golden Perch). In describing the waterway values, an emphasis has been placed on identifying listed flora and fauna species, and vegetation communities followed by the environmental flow recommendation that support and sustain the river (e.g. spring freshes to cue native fish movement). Campaspe River environmental flow recommendations The environmental flow recommendations for the Campaspe River were undertaken in 2006 and provide the environmental context that the mitigation water assessment was based on. Campaspe Billabong and Unnamed creek The contribution of channel outfalls to the Campaspe Billabong and Unnamed Creek is not likely to be significant and have been incorporated into the Campaspe River assessment. Hydrology assessment) The assessment of the impact of NVIRP (outfall reductions) on streamflow was undertaken for the long-term, recent (post 2000) and baseline year (2003-04 or 2004-05) conditions. The post NVIRP hydrology assessment has largely focused on the impact during the irrigation season (August to April), due to the influence of reduced outfalls over this time period. Assessment of mitigation water requirement Mitigation water is defined as the volume of water required to ensure no net impacts on high environmental values resulting from NVIRP. The outcomes from this assessment are summarised below: • Campaspe River Reach 3: the assessment demonstrated that the outfall water does not provide benefit to the waterway. Therefore mitigation water is not required to maintain the environmental values of the waterway. • Campaspe River Reach 4: the assessment demonstrated that the outfall water does not provide benefit to the waterway. Therefore mitigation water is not required to maintain the environmental values of the waterway. Potential risks, limiting factors and adverse impacts associated with the recommended water regime A number of potential risks, limiting factors and adverse impacts have been identified that may result from the provision of mitigation water as a portion of the recommended water regime. For example, this EWP is based on current operation of the Campaspe River, any significant changes to operation including water trade out this system will need to reviewed. Adaptive management framework An adaptive management approach (assess, design, implement, monitor, evaluate and adjust) has been incorporated into the EWP to ensure that it is responsive to changing conditions. The Campaspe River EWP has been developed using the best available information. However, a number of information and knowledge gaps which have been identified in the document may impact recommendations and/or information presented. These knowledge gaps will be addressed as part of the adaptive management approach outlined within the EWP as additional information becomes available. Governance arrangements A summary of the roles and responsibilities (e.g. land manager, environmental water manager, and system operator) relating to the development and implementation of EWPs has been defined. i Campaspe River Environmental Watering Plan CONTENTS PAGE EXECUTIVE SUMMARY............................................................................................................ I CONTENTS PAGE.................................................................................................................... II ACKNOWLEDGEMENTS ........................................................................................................ IV ABBREVIATIONS..................................................................................................................... V 1. NORTHERN VICTORIA IRRIGATION RENEWAL PROJECT........................................ 1 1.1. DECISION UNDER THE ENVIRONMENTAL EFFECTS ACT 1978 ............................................. 1 1.2. WATER SAVINGS PROTOCOL ........................................................................................... 1 1.2.1. Baseline year................................................................................................... 1 1.2.2. Long Term Cap Equivalent Conversion Factor ............................................... 1 1.3. WATER CHANGE MANAGEMENT FRAMEWORK .................................................................. 2 1.4. ENVIRONMENTAL REFERRAL REPORT .............................................................................. 2 1.5. SHORTLISTING OF ENVIRONMENTAL WATERING PLANS ..................................................... 2 1.6. PURPOSE AND SCOPE OF ENVIRONMENTAL WATERING PLANS .......................................... 3 1.7. EWP DEVELOPMENT PROCESS ........................................................................................ 4 1.7.1. Interim Campaspe River EWP......................................................................... 4 1.7.2. Consultation and engagement......................................................................... 5 1.7.3. Technical Reference Group............................................................................. 5 2. CAMPASPE RIVER.......................................................................................................... 6 2.1. CATCHMENT SETTING ...................................................................................................... 6 2.2. CAMPASPE RIVER EWP.................................................................................................. 6 2.3. CULTURAL HERITAGE ...................................................................................................... 6 2.4. RECREATION .................................................................................................................
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