A sustainable solution for Neil McDougall Lake

The City has embarked on a project to provide a long-term, sustainable solution to manage nutrient levels in Neil McDougall Lake in Como.

The lake experiences an almost yearly reocurrence of a dense Lemna (duckweed) mat that covers the lake. Blue-green algae blooms are also noted at the Lake when naturally occurring blue-green algae multiply quickly and dominate the water column.

The City is investigating a long-term solution for the management of these duckweed and blue-green algae blooms and has developed a preliminary Water Sensitive Urban Design to help to reduce the level of nutrients before they enter the lake.

The lake is a receiving body of water for stormwater, and picks up nutrients from the surrounding catchment area which are then deposited into the lake. The duckweed feeds off this nutrient and coupled with warm weather, it flourishes.

The City has developed a preliminary Water Sensitive Urban Design to help to reduce the level of nutrients before they enter the lake.

A drop-in session will be held at Neil McDougall Park from 4-6pm, Thursday 7 March to inform the community about the preliminary design.

To provide your feedback visit, yoursay.southperth.wa.gov.au and complete the survey. Feedback closes 18 March 2019.