Beetaloo GBA Region
The Beetaloo GBA region (Beetaloo Sub-basin) is part of the greater McArthur Basin and covers an area of about 28,000 square kilometres in the Northern Territory. Located about 500 kilometres south of Darwin; the region is sparsely populated, with Daly Waters and Elliott the highest populated settlements.
The Geological and Bioregional Assessment Program uses the geological boundary of the Beetaloo Sub-basin, as defined by the Northern Territory Geological Survey, to delineate the region. To allow the Program to investigate the potential impacts of unconventional gas developments to water and the environment immediately beyond the region, an additional extended boundary has been defined - the Beetaloo GBA extended region.
The Beetaloo GBA region overlies the extensive Cambrian Limestone Aquifer, the principal water resource in the region. The Roper and Wiso surface water systems cover most of the region and while there are no permanent streams, groundwater discharge supports perennial flows in the Roper River and streams in the Elsey National Park. Important wetlands in the region include the Mataranka Thermal Pools, Limmen Bight (Port Roper) Tidal Wetlands in the Roper Basin (system), and the Lake Woods in the Wiso.
Rapid regional prioritisation (stage 1)
The Beetaloo GBA region is one of the most prospective areas for shale gas in Australia, containing an estimated prospective resource of 178,200 PJ (petajoules) of gas, as well as having liquids potential.
The region is a “frontier” for unconventional gas. However, the demonstrated existence of substantial prospective and contingent shale gas resources, coupled with proximity to infrastructure, including the Northern Gas Pipeline, make the Beetaloo GBA region an excellent candidate to supply new gas to the East Coast Gas Market in the next five to ten years. The rapid regional prioritisation report can be found here.
Baseline analysis (stage 2)
The geological and environmental baseline assessment for the Beetaloo GBA region synthesises knowledge about the geology and prospectivity of shale gas resources, water resources, protected matters and risks to water and the environment from unconventional gas development.
Impact analysis and management assessment (stage 3)
The impact analysis and management assessment for the Beetaloo GBA region examines the potential impacts to water resources and Commonwealth and Territory matters of environmental significance, to support the development of effective monitoring, mitigation and management measures. Stage 3 is underway and is expected to be completed by 2021.
The next meeting of the Beetaloo GBA Region user panel is expected to be held in the second half of 2020.
Previous user panel meetings were held on 31 July 2018 and 23 May 2019.
Discussions from each user panel meeting are summarised in a communique which is published on the Geological and Bioregional Assessment website (below).
- Bioregional Assessment Program
- Lake Eyre Basin bioregion
- Northern Inland Catchments bioregion
- Clarence-Moreton bioregion
- Northern Sydney Basin bioregion
- Sydney Basin bioregion
- Gippsland Basin bioregion
- Indigenous assets
- Bioregional assessment methodology
- Compiling water-dependent assets
- Assigning receptors to water-dependent assets
- Developing a coal resource development pathway
- Developing the conceptual model of causal pathways
- Surface water modelling
- Groundwater modelling
- Receptor impact modelling
- Propagating uncertainty through models
- Impacts and risks
- Systematic analysis of water-related hazards associated with coal resource development
- Assessment components
- Component 1: Contextual information
- Component 2: Model-data analysis
- Components 3 and 4: Impact and risk analysis
- Component 5: Outcome synthesis
- Geological and Bioregional Assessment Program
- Metadata and datasets