Tirohia te wāhanga i raro nei, me te whakahoki i te pātai i muri i roto i te reo ano rite te wāhanga: Passage: Ka taea te whakaaro o te wai raro i roto i te ngā taua rite te wai mata: kōkiri, putanga, me te rokiroki. Ko te rerekētanga nui ko e tika ana ki tona auau puhoi o te huringa, he nui nui ake te rokiroki wai raro (i roto i te rōrahi) whakaritea ki ngā kōkiri i te mea mo te wai mata. hanga tenei rerekētanga reira ngāwari hoki ki te tangata te whakamahi i te wai raro unsustainably mo te wa roa, kahore he pānga kino. Heoi, i runga i te wā roa te auau toharite o te leakage i runga ake i te puna wai raro ko te rohe o runga mo te toharite kohi o te wai i taua puna. Pātai: Mai te wai raro e taea te rokiroki mo te wa roa tenei hanga reira ngāwari hoki te hunga ki te whakamahi i te reira.
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