It would be very difficult for the Fitzroy Basin to get an A overall. Whilst it may occur at the indicator level of assessment (for example, a catchment might get an A for ecology), the overall score is unlikely to be an A.
An ’A’ represents data being at or better than the benchmark value. These benchmarks are the best available guideline and water quality objective values for the indicators that make up the Fitzroy Basin EHI. Where possible benchmarks specific to a slightly-moderately disturbed (‘working”) basin are being used. And where available sub-basin (rather than regional, state or national) level values are being used.