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The travel distance was calculated based on measured and/or estimated flow velocities in relevant streams.Whole catchment zone: The surface water catchment upstream of the intake point For groundwater sources, these zones are defined as:Inner zone:The council owned land immediately surrounding the bore head, ideally up to a distance of 5 m away from the bore headworks.Microbial protection zone:an area surrounding the bore beyond which microbial transport in groundwater will take more than 1 year to reach the bore. These areas are calculated based on local aquifer parameters and groundwater flow directions where available.Whole catchment zone: The area upgradient of the source that is expected to provide recharge to the groundwater resource. 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