Australian Water Information Dictionary

Standards: National Aquifer Framework

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An underground layer of saturated rock, sand or gravel that absorbs water and allows it free passage through pore spaces.

Source: Australian and New Zealand Guidelines for Fresh and Marine Water Quality (2000)

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A geological formation that may contain groundwater but is not capable of transmitting significant quantities of it under normal hydraulic gradients. May function as a confining bed.

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One of the tiers in the National Aquifer Framework. Smallest mapped or defined geological entity consistent at a national scale.

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One of the tiers in the National Aquifer Framework. Aggregation and classification of hydrogeologic units according to their age, depositional environment, rock type and whether they behave as an aquifer or aquitard.

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One of the tiers in the National Aquifer Framework. One or more geologic units which have similar hydrogeological characteristics and behaviour.

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Bureau developed framework for naming and grouping hydrogeologic units from across Australia.

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