Commonwealth Numbered Acts Commonwealth Numbered Acts(1) A long‑term average sustainable diversion limit for the Basin water resources, for the water resources of a particular water resource plan area or for a particular part of those water resources must reflect an environmentally sustainable level of take.
(2) A long‑term average sustainable diversion limit for the Basin water resources, for the water resources of a particular water resource plan area or for a particular part of those water resources may be specified:
(a) as a particular quantity of water per year; or
(b) as a formula or other method that may be used to calculate a quantity of water per year; or
(c) in any other way that the Authority determines to be appropriate.