The for the (see companion product 2.3 for the Gloucester subregion ()), indicates that coal seam gas (CSG) and large coal mining development has the potential to directly affect the regional and that this direct can propagate through to the alluvium of the Avon and Karuah river systems. Any on the in the alluvium of those rivers in turn has the potential to affect streamflow (and therefore resources) in the stream networks of the Avon and Karuah rivers. CSG development may impact streamflow if aquifer reduces baseflow, while open-cut coal mines will intercept and retain surface which has the potential to affect streamflow directly.
Both the Avon and Karuah rivers are unregulated, gaining streams (Section 2.1.5 in companion product 2.1-2.2 for the Gloucester subregion ()) with relatively small catchment areas. The simulation of river management or routing of streamflow through the river network with a river model is not necessary as the salient features of streamflow can be simulated solely with a rainfall-runoff model (see companion submethodology M06 for surface water modelling ()).
For these reasons, surface water resources in the Gloucester subregion are modelled using the Australian Water Resource Assessment Landscape model AWRA-L (version 4.5; ) only. Gridded output from AWRA-L is accumulated to the without any lagged routing. That is, there is no explicit transmission delay algorithm.
In all other respects, the surface water modelling in the Gloucester subregion follows the methodology set out in companion submethodology M06 ().
Product Finalisation date
- 126.96.36.199 Methods
- 188.8.131.52 Review of existing models
- 184.108.40.206 Model development
- 220.127.116.11 Calibration
- 18.104.22.168 Uncertainty
- 22.214.171.124 Prediction
- Currency of scientific results
- Contributors to the Technical Programme
- About this technical product