Final LDC WQ Report | Page 3

Table of Contents
Acknowledgements ............................................................................................................................................. 2 List of Tables ........................................................................................................................................................ 4 List of Figures ....................................................................................................................................................... 5 List of abbreviations and acronyms ..................................................................................................................... 7
Executive
Summary .............................................................................................................................................. 8
Background
to the LDC Project .................................................................................................................. 14 Scope and objectives of the report ........................................................................................................... 16 Key evaluation questions and approach to monitoring and evaluation ................................................... 16 Key evaluation questions addressed in this report ........................................................................... 16 Guide to monitoring and evaluation ................................................................................................. 18 Approaches for reporting progress for each key evaluation question .............................................. 20 3.3.1 Improved pollutant loads .......................................................................................................... 20 3.3.2 Gully remediation ...................................................................................................................... 20 Estimated water quality outcomes to 2020-21 ......................................................................................... 20 Activities in the LDC Project 2020-21 ( Up to and including Year 4 ) .................................................. 20 KEQ : To what extent has LDC contributed to improved pollutant loads ? ........................................ 21
4.2.1 2021 Performance Report Q1 . What are the long-term measured pollutant reductions at a property level in outputs of sediment and particulate nutrients in response to actions initiated under the MIPs ?................................................................................................................................................... 21
4.2.2 2021 Performance Report Q2 . What are the predicted ( modelled ) water quality outcomes at the basin / catchment level , and how do these compare to Reef 2050 Water Quality Improvement Plan pollutant load reduction targets ?.............................................................................................................. 37
4.2.3
2021 Performance Report Q3 . What are the modelled pollutant reductions in the MIPs subcatchments as a result of the MIPs investment ? ...................................................................................... 42
KEQ : To what extent have major gullies been remediated ? ............................................................. 50
4.3.1
Mt Wickham .............................................................................................................................. 51
4.3.2
Glen Bowen ............................................................................................................................... 60
4.3.3
Mount Pleasant ......................................................................................................................... 66
4.3.4
Strathbogie ................................................................................................................................ 69
4.3.5
Havilah ....................................................................................................................................... 75
4.3.6
Key learnings from gully monitoring ......................................................................................... 77
4.3.7 Small-scale gully remediation sites ........................................................................................... 81 Associated activities .................................................................................................................................. 83
Landscape remediation and prioritisation project ............................................................................ 83
5.1.1
Stage 1 : ‘ Hotspot ’ rapid prioritisation ....................................................................................... 83
5.1.2
Stage 2 : Detailed mapping and characterisation ...................................................................... 86
5.1.3 Stage 3 : Spatial prioritisation incorporating cost effectiveness ................................................ 87
3