The Darling Downs is Queensland's agricultural and resource heartland — and one of the state's most environmentally complex operating environments. From the coal seam gas fields of the Surat Basin to the fertile cropping country of the Condamine floodplain, and from Toowoomba's industrial corridor to the region's intensive agricultural enterprises, the environmental compliance demands here are significant and highly specific to this part of Queensland.
Environmental Advisory Services darling downs
Coal Seam Gas and the Surat Basin
The Darling Downs hosts one of the world's largest coal seam gas provinces. The Surat Basin, centred around Dalby, Chinchilla, Miles, and Roma, contains thousands of CSG wells operated by companies including Arrow Energy (a Shell-PetroChina joint venture), Origin Energy, and Santos. The environmental compliance requirements for CSG operations in this region are extensive — and the tension between gas development and agricultural land use is one of the defining issues of the region.
Condamine Alluvium Groundwater
The Condamine Alluvium — the shallow alluvial aquifer beneath the Darling Downs floodplain — is one of Queensland's most important agricultural water resources. It supplies irrigation water to some of the state's most productive cropping land, and its protection from CSG-induced impacts is a live and contested issue.
The Queensland Government's Crisafulli Government has publicly committed to ensuring CSG projects demonstrate beyond reasonable doubt that they will not have a detrimental impact on the Condamine Alluvium. The Office of Groundwater Impact Assessment (OGIA) — whose mandate expanded in 2025 to include advice on subsurface impacts from resource development — plays a central role in assessing cumulative groundwater impacts in the Surat Basin.
For landholders and CSG operators alike, understanding groundwater rights, make good agreement obligations, and bore impact assessment requirements is critical in this region.
CSG Water Management
CSG extraction produces large volumes of water that is typically highly saline and classified as waste under Queensland law. Operators must manage this water under their Environmental Authority conditions, which regulate storage, treatment, and beneficial reuse. Brine management — dealing with the salt and residual contaminants after water treatment — remains one of the industry's most challenging unresolved environmental issues in the Surat Basin.
CSG Coexistence and Landholder Rights
CSG operations on the Darling Downs must comply with Queensland's coexistence framework, which includes requirements for landholder notification, conduct and compensation agreements, and Regional Interest Development Approvals (RIDAs) for operations on priority agricultural land. Landholders who are concerned about the impact of CSG activities on their groundwater, soil, or land productivity have specific rights under Queensland law — including the right to require a make good assessment of any bore impacted by CSG extraction.
Agricultural ERAs on the Darling Downs
The Darling Downs hosts many of Queensland's largest intensive agricultural operations — including feedlots, piggeries, poultry farms, and dairies above the thresholds that trigger ERA classification. These operations require either a Development Application or Environmental Authority, and compliance with EA conditions covering waste management, water quality, air quality, and odour is an ongoing obligation.
The region's agricultural ERA operators also face growing scrutiny on nutrient management and its impacts on the Condamine-Balonne river system. Water quality conditions attached to agricultural EAs in this region are increasingly demanding.
Coal Mining Compliance and Rehabilitation
While Ipswich's coal mining era has effectively concluded, the Darling Downs remains active country for coal operations. Progressive Rehabilitation and Closure Plans (PRCPs), Estimated Rehabilitation Costs (ERCs), and financial assurance under the Financial Provisioning Scheme are live compliance obligations for operators in the region. Annual rehabilitation reporting and milestone compliance are closely monitored by the Office of the Mineral and Energy Regulator (OMER).
Critical Minerals on the Darling Downs
The Darling Downs and surrounding regions are attracting growing exploration interest for critical minerals, including materials relevant to the energy transition. New project proponents entering this space need to navigate the EA framework, understand what conditions are likely to apply, and build an ESG story that meets investor and offtake buyer expectations from the outset.
The Darling Downs is resource country — complex, contested, and operating under close regulatory scrutiny. RiethThink Environmental provides the specialist advice that operators and landholders in this region need.
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Whether you're in the early stages of planning or need urgent regulatory advice, RiethThink Environmental is here to help. We work with resource and mining companies across South East Queensland and beyond, providing practical, no-nonsense environmental advisory that gets things moving.
Get in touch today:
• Email: josh@rieththink.com.au
• Phone: +61 421 455 232
• Or use the contact form on our website
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