oa Investigative Methods to Inform Conceptual Understanding of Groundwater Flow through the Horrane Fault, Surat Basin, Queensland

Potential indicators of hydraulic connectivity are identified for groundwater chemistry data on the basis of a conceptual groundwater model and hydrogeologic setting. Dissolved methane concentrations appear to be a useful indicator of potential connectivity between an alluvial aquifer overlying a coal seam gas target formation, and are used to infer areas of hydraulic connection, including connectivity through a fault system mapped in the Basin sequence underlying the alluvial aquifer.