Safeguarding our creeks ...

why stormwater management is important!

Rapid growth of high density multi unit housing developments and new residential sub divisions present the Mornington Peninsula Shire Council with complex engineering and environmental challenges, particularly regarding the management of stormwater and the protection of a number of Mount Eliza creeks.

Residential developments place extra pressure on our drainage systems by increasing the amount of stormwater flowing through our drains by 200-300%.  This extra volume intensifies the force of the flows and creeks are unable to cater for the increase in stormwater discharge. Unless carefully managed, this stormwater run-off can increase erosion, pollution and silt deposits on our creek and bay systems.

The wetland approach

Drainage authorities are now recognising the benefits of wetlands in stormwater management.

These include:

  • Flood protection and flow control
  • Water quality improvement
  • Landscape and recreational qualities
  • Providing wildlife habitat

 

Wetland vegetation such as rushes, reeds and sedges play an important role in improving water quality by trapping fine particles and soluble pollutants. Gross pollutant traps are also incorporated in a wetland development to trap artificial and natural litter, and coarse particles before entering the wetland system. 
 

By passing through a series of shallow and deeper water areas within the wetland, nitrogen and other contaminants are filtered from the water by the plants. The wetland also slows the flow of water to reduce the amount of sediment being carried and to enable sunlight and time to purify the water before it is discharged through an underground pipe into the creek.

Wetlands can be fully landscaped with indigenous vegetation providing a haven for local flora and fauna. They can be linked by a series of pathways to be enjoyed by the local community. 

Wetlands are an important step in safeguarding the environment and ecosystem of our creeks, together with that of Port Phillip Bay.

More information can be obtained from Council Officers at MPSC on 5986 0200.