• Gully management : projects have been implemented at a range of scales and include remediation of an actual gully area , and where practical , also included practice changes within the surrounding catchment .
Appendix 1 provides further information on the types of practice change and incentives offered through the LDC Project .
There were 95 on ground water quality practice change activities completed through 84 contracts on 51 unique properties . Of these , 36 % were grazing land management ( fencing , water and revegetation management ), 30 % were grader projects , 12 % were streambank and direct site erosion control and 22 % were gully management ( Table 1 ). The project areas are also shown and highlight that only a very small proportion ( 3 %) of the total project area involves gully management , with the most area in the grazing land management ( fencing and water management ) projects and grader projects .
Table 1 . Types and proportion of projects in the LDC Project to June 2021 .
Project type |
Number of projects |
Proportion of project types |
Project Area ( ha ) |
Proportion of total project area |
GLM Wire & Water |
20 |
24 % |
31,739 |
49 % |
Revegetation |
10 |
12 % |
6,261 |
10 % |
Grader Project |
25 |
30 % |
15,318 |
24 % |
Erosion control 5 6 % 8,401 13 %
Streambank |
5 |
6 % |
1,273 |
2 % |
Gully |
19 |
22 % |
1,623 |
3 % |
Total 84 64,615
The primary outcome for the LDC Project addressed in this report is : Reduced pollutant loads from the Bowen Broken Bogie catchment provide a major contribution to the Burdekin Basin targets in the Reef 2050 Water Quality Improvement Plan . This section is structured using the questions included in the Performance Report template relevant to this outcome , i . e ., Question 1 , 2 and 3 . A summary is presented for each question , followed by additional detail . Further detail for Questions 2 and 3 are combined as both questions are about modelling at a sub catchment or catchment scale .
It is estimated that projects completed in the LDC Project to date have collectively contributed an estimated fine sediment reduction of 10,600 tonnes per year reaching the Great Barrier Reef . Of this , approximately half of the sediment savings are attributable to grazing land management changes on hillslopes and streambanks , and the other half as a result of gully remediation treatments across a broad range of scales ( Table 2 ). Figure 3 also highlights the relatively small area of intervention in the gully management projects compared to the large sediment savings that these can achieve - 52 % of the sediment savings over only 3 % of the project area .
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