Final LDC WQ Report | Seite 120

• Report card data was collated from the existing report card model runs ( for years 1 , 2 and 3 ) ( McCloskey et . al . 2021 ). This represents all BBB projects ( on-ground activities ) completed through to June 2020 , supported by any investment stream .
Table 3 . Bowen-Broken-Bogie regional contribution to the Burdekin catchment ( end of valley ) fine sediment , particulate nitrogen and phosphorus load reductions ( tonnes / year of load reduction ), from all BBB investment stream projects completed through to June 2020 .
Year
LDC Project year
Data / Report Card Year
Reduction ( t / yr )
Fine sediment Particulate Phosphorus Particulate Nitrogen
% of total reduction
Reduction ( t / yr )
% of total reduction
Reduction ( t / yr )
% of total reduction
2017
-
2016
11,150
68 %
6
62 %
14
72 %
2018
-
2017
No report card release
2019
Year 1
2017 & 2018
630
3 %
0.5
3.8 %
1
5 %
2020
Year 2
2019
737
27 %
1.8
32 %
4.7
44 %
2021
Year 3
2020
5,488
68 %
6.1
62 %
7.6
54 %
2022
Year 4
2021
In preparation
Request 3 : Provide different erosion types by land use within each sub catchment ( i . e . hillslope / streambank / gully ) pivot table . Just the general current status of the baseline .
Method :
• Data extracted from the current Burdekin Source Model RC2020 baseline scenario , to examine subcatchment erosion types and sediment yields .
Table 4 . Modelled BBB sub-catchment fine sediment , particulate nitrogen and phosphorus yields ( t / ha / y ).
Sub-catchment
Fine Sediment ( t / ha / y )
Particulate Nitrogen ( t / ha / y )
Particulate Phosphorus ( t / ha / y )
Bogie River
0.54
0.6
0.3
Bowen River ( lower reaches )
2.89
3.1
1.8
Broken River
0.52
1.5
0.7
Glenmore Creek
1.69
1.6
0.6
Little Bowen River
2.20
5.1
2.5
Pelican Creek
1.64
2.9
1.1
Rosella Creek
1.89
2.2
1.0
Total BBB
1.44
2.2
1.0
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