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Development of Methods and Results for the Pilot Report Card Freshwater Basins Final Report Technical Working Group April 2016 Table of Contents 1. Introduction ..................................................................................................................................... 1 1.1. General ......................................................................................................................................... 1 1.2. Purpose of this Document ............................................................................................................ 1 2. Selection of Indicators ..................................................................................................................... 2 2.1. Water Quality Indicators .............................................................................................................. 3 2.1.1. Sediment .................................................................................................................................... 3 2.1.2. Nutrients .................................................................................................................................... 3 2.1.3. Contaminants ............................................................................................................................ 4 2.2. Habitat and Hydrology Indicators ................................................................................................. 5 2.2.1. Hydrological Modification ......................................................................................................... 5 2.2.2. Flow ........................................................................................................................................... 6 2.2.3. Riparian Extent .......................................................................................................................... 6 2.2.4. Wetland Extent .......................................................................................................................... 6 2.3. Fauna Indicators ........................................................................................................................... 7 2.3.1. Fish ............................................................................................................................................. 7 2.3.2. Macroinvertebrates ................................................................................................................... 7 3. Methods for Data Collection ........................................................................................................... 9 3.1. Water Quality Data Collection ...................................................................................................... 9 3.2. Habitat and Hydrology Data Collection ........................................................................................ 9 3.2.1. Hydrological Modification ....................................................................................................... 10 3.2.2. Flow ......................................................................................................................................... 10 3.2.3. Riparian Extent ........................................................................................................................ 10 3.2.4. Wetland Extent ........................................................................................................................ 10 3.3. Fauna Data Collection ................................................................................................................. 11 3.3.1. Fish ........................................................................................................................................... 11 3.3.2. Macroinvertebrates ................................................................................................................. 12 4. Development of Condition Assessments Scoring Methods .......................................................... 13 4.1. Grading for Condition Assessments ........................................................................................... 13 4.2. Decision Rules ............................................................................................................................. 13 4.3. Water Quality Condition Assessment ......................................................................................... 14 4.4. Habitat and Hydrology Condition Assessment ........................................................................... 15 4.4.1. Habitat Modification ............................................................................................................... 15 4.4.2. Flow ......................................................................................................................................... 16 4.4.3. Riparian Extent ........................................................................................................................ 16 4.4.4. Wetland Extent ........................................................................................................................ 17 4.5. Fauna Condition Assessment...................................................................................................... 17 5. Development of Progress to Targets Scoring Methods ................................................................. 18 5.1. Calculating Progress to Targets .................................................................................................. 18 6. Condition Assessment Results ....................................................................................................... 19 6.1. Water Quality ............................................................................................................................. 19 6.2. Habitat and Hydrology ................................................................................................................ 20 6.3. Fauna .......................................................................................................................................... 21 6.4. Results by Freshwater Basins ..................................................................................................... 21 7. Confidence, Limitations, and Recommendations .......................................................................... 25 7.1. Confidence Associated with Results ........................................................................................... 25 7.2. Limitations and Recommendations ............................................................................................ 26 References ............................................................................................................................................ 28 Appendix A – Calculations used in assessing freshwater basins. ......................................................... 29 Appendix B - Confidence ratings for freshwater basin indicators ........................................................ 54 1. Introduction 1.1. General The Mackay-Whitsunday Healthy Rivers to Reef Partnership was established in October 2014, with the aim to release a pilot report card in 2015. The pilot report card reports on the 2013-14 year (1 July to 30 June), and includes assessments of the freshwater environment, the marine environment (to the eastern boundary of the Great Barrier Reef (GBR) Marine Park), economic and social context, and stewardship levels within different industries in the region. For more detail on the Mackay-Whitsunday report card and Partnership, refer to the Program Design: Pilot Report Card document. 1.2. Purpose of this Document The purpose of this document is to provide information to support the Program Design for the pilot report card. This document describes the methods used, and the results, from the freshwater basin assessments, including: . Indicator selection process; . Data collection methods; . Scoring methods; and . Results. Similar documents are available describing the indicators, methods, and results for social and economic assessments, and stewardship assessments, as well as for the condition assessments for estuaries, and inshore and offshore marine environments. Freshwater Scoring Methods and Results Pilot Report Card Page 1 of 59 2. Selection of Indicators The sections below outline the process and final outcomes of determining the most appropriate indicators used in the freshwater basin assessments for the pilot report card (Figure 1). The indicators needed to be relevant to the region and the pressures currently occurring (refer to Program Design and the conceptual model specifically developed for the report card). Figure 1. Freshwater basin condition assessment coaster for the pilot report card. All potential indicators were analysed and shortlisted based on the following questions: . Is the indicator clearly linked to an objective of the report card? . Can the indicator easily be used to provide a report card score? . Do other programs and report cards use this indicator? Additionally, it was identified that indicators needed to be: . Indicative of what the Partnership is trying to protect (or a good ‘proxy’); . Sensitive to change; . SMART (specific, measurable, achievable, relevant, time-bound); . Of strong scientific and conceptual basis - i.e. indicators based on well-defined or validated cause-and-effect chains linking human-related pressures to ecosystem response if possible; . Signals that can be measured
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