11Alterations in flow and water level

11 Alterations in flow and water level (1) For the purposes of the maintenance and preservation of a lake and the maintenance, testing and preservation of associated works, the Minister may authorise— (a) a raising or lowering, by any means, of the level of water in a lake; or (b) stopping the flow, or reducing the rate of flow, of water from a lake; or (c) the flow, or an increase in the rate of flow, of water from a lake. (2) The Minister must ensure that any action necessary to minimise any detriment, inconvenience and damage that may result from doing something under subsection (1) is taken. (3) The Minister must not authorise the doing of an act under subsection (1) without first consulting with the environment protection authority.