The Gwydir River is located within the Murray-Darling Drainage Division in northern New South Wales. Although the complete Gwydir River catchment includes regulated and unregulated areas, only the regulated area was assessed for the water balance.
The Gwydir River- Regulated is a tributary of the Barwon River which in turn is a tributary of the Darling River. Irrigation that occurs within the Gwydir River – Regulated WMA is predominantly private irrigation (i.e. there are no major irrigation authorities that supply water). Copeton Dam is the major water storage and Moree is the largest town within the study area.
The Department of Natural Resources (DNR) is the licensing authority and manages both surface and groundwater diversions for urban, commercial/industrial, irrigation and environmental purposes. The Border Rivers - Gwydir CMA is responsible for managing native vegetation, soil and other natural resources in the catchment in conjunction with the community, local government, industry and State Government. State Water manages the major water supply storages in New South Wales and supplies bulk water to the irrigation authorities, town water supply authorities, mines and electricity generators by releasing water from its dams into rivers to be accessed by downstream water users. State Water also delivers water for private irrigators and stock and domestic users and is responsible for delivering environmental flows, in accordance with rules as set out in NSW Water Sharing Plans, on regulated rivers in the state.
Local councils treat the bulk water and deliver it to urban users in the major towns within the catchment and also manage the wastewater collection and treatment network (e.g. Moree Plains Shire Council for Moree and the surrounding area). Both surface and groundwater resources are used for town water supplies in the Gwydir River– Regulated WMA.
Figure 1 Gwydir River - Regulated water management area locality map
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Gwydir River - Regulated water management area locality map (1.3 Meg)
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