Update December 2021

City officers and contractors have finalised commissioning of the mechanical mixing device in Lake Brearley.

As the mixing device funnels water from the surface to the bottom of the lake there is the potential for temporary discolouration of the lake as sediment beneath the mixer is disturbed. Such discolouration will have no impact on lake fauna or ongoing water quality.

Over the coming months the mixer will progressively mix shallow and deeper water, creating a more consistent temperature throughout the water column and increase oxygen in deeper water creating conditions that reduce the potential for nutrients to be released from the sediment.

City officers are continuing to work with contractors to commission the mechanical mixing device in Lake Bungana. It is expected that this will be finalised and operational prior to Christmas.