How do man-made wetlands work?

It has been an absolute pleasure to see residents and local community members taking the time to enjoy the wetland facilities. As our wetland takes shape there has been a few questions from the community regarding the purpose of the planting in the wetland.

Man-made wetlands are not only a fantastic community space for residents to enjoy, but they also play several important roles — from providing wildlife habitat, lessening the impact of floods and filtering harmful pollutants in stormwater that enters our rivers and creeks.

How wetlands work

  1. Water from rivers or creeks is directed into the wetland, and slowly travels through several small ponds. This lets litter, sediment and other large pollutants sink to the bottom.
  2. Water is filtered by micro-organisms and algae that grow on wetland plants. They remove nutrients, especially nitrogen, to help reduce algal blooms in Port Phillip Bay.
  3. After one to three days in the wetland, cleaner water is released back into the river or creek and water levels return to normal.

The Jubilee wetland has been constructed by Lotus Living on behalf of Melbourne Water and it needs to meet their stringent guidelines for “constructed waterways”. Melbourne Water will maintain all the planting below the normal water level. Good plant coverage at various depths in the wetland is required to achieve the water cleansing function for nearby Lollypop Creek.

Once all the works in the wetland are completed this year, the landscape will become more settled. Typically, it takes between 3-4 years for these landscapes to appear established.