modelling in the is achieved using a combination of rainfall-runoff modelling and river system modelling. The rainfall-runoff model is the Australian Water Resources Assessment (AWRA) landscape model (AWRA-L) (). This model is applied using the regional calibration scheme described in companion submethodology M06 (as listed in Table 1) for surface water modelling ().
The Hunter river basin covers a large area and comprises both regulated and unregulated river sections. Downstream of Glenbawn Dam and Glennies Creek Dam, the Hunter River and Glennies Creek are regulated. This means that in addition to from unregulated tributaries and , river flow in these reaches reflects releases of water stored in the dams to meet the needs of downstream users, including the environment. These characteristics dictate that a river model is required to translate streamflows generated by the landscape model. This is done using the AWRA river model (AWRA-R) (), an overview of which is provided in .
The exception here is for the Wyong River in the Macquarie-Tuggerah lakes basin, which is smaller and unregulated and no river modelling is applied. In this catchment, the salient features of streamflow can be simulated solely with the rainfall-runoff model. Gridded output from AWRA-L is accumulated to the without any lagged routing.
The regulated section of the Hunter River from Glenbawn Dam to Singleton is the focus of the Hunter River Salinity Trading Scheme (HRSTS), which was established to manage of water to the Hunter River by the mining and power generation sectors to minimise water quality . New Hunter-specific functionality has been added to AWRA-R to mimic the effects of the HRSTS. Details of this part of the model are given in companion product 2.1-2.2 for the Hunter subregion ().
Product Finalisation date
- 126.96.36.199 Methods
- 188.8.131.52 Review of existing models
- 184.108.40.206 Model development
- 220.127.116.11.1 Spatial and temporal dimensions
- 18.104.22.168.2 Location of model nodes
- 22.214.171.124.3 Choice of seasonal scaling factors for climate trend
- 126.96.36.199.4 Representing the hydrological changes from mining
- 188.8.131.52.5 Modelling river management
- 184.108.40.206.6 Rules to simulate industry water discharge
- 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