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Oaklands Wetland

Oaklands Wetland is a sensitive and deeply valued wetland which plays a variety of important roles.

The wetland is located in Oaklands Wetland and Reserve at 237-265 Oaklands Road in Oaklands Park; adjacent to the Warradale Army Barracks and across the road from the Marion Outdoor Pool.

It is a cherished open space still in the early years of development, where our community directly connects with nature. It is home to a diversity of wildlife including birds, aquatic life and protected species including the Grey-headed Flying-fox.

Importantly, the key purpose of the wetland itself is to clean and supply precious water to many of our parks. It is a ‘water farm’ and once fully operational it will help provide the community with green open spaces.

Soak up some nature

Oaklands Wetland is home to many different species of animals including parrots, ducks, cockatoos and wader birds such as spoonbills, ibis and gulls. Fish and frogs live in the wetland, plus many different types of insects like dragonflies and mayflies.

Majestic, old river red gums (Eucalyptus camaldulensis) and 85,000 new plants play an important role creating habitat for our wildlife.

There are many things to enjoy at Oaklands Wetland, such as:

  • Walk, run or cycle along the paths.
  • Cross the stepping stones in front of the wetland weir.
  • Sit on one of the several huge logs alongside Sturt Creek.
  • Volunteer with the Friends of Sturt River Landcare to plant and care for native plants.
  • Watch or photograph native birds foraging in the wetland
  • Relax with a picnic or BBQ.
  • Learn how the wetland works by booking a tour.

Cleaning water naturally – how the wetland works

When fully operational the wetland can capture, clean and store up to 400 million litres of stormwater each year.

Water is cleaned as it moves slowly through a series of ponds, which each use natural processes in various ways to clean the water.

To function properly, the wetland needs calm water, healthy plants and native animals to all play their part.

Oaklands Wetland - how it works

Oaklands Wetland can capture, clean and store up to 400 million litres of stormwater each year, when fully operational.

The process begins when water is pumped into a gross pollutant trap from the Sturt River. The trap removes stones, gravels, litter and organic matter from the water before it flows into the wetland’s inlet pond.

Water is then cleaned as it moves slowly through a series of ponds, which each use natural processes in various ways to clean the water.

Sedimentation is a natural process where particles settle to the bottom of the wetland. Filtration is where plants naturally trap pollutants and excess nutrients.

It takes three days for the water to move through the wetland, where it can be injected into aquifers almost 100m below ground. From there, an 11.5km long distribution network will supply water to 31 reserves and other open public spaces for irrigation use.

What the wetland needs to work
  • Calm water The water needs to be calm for the particles to settle. We carefully manage how water flows through the wetland.
  • Healthy plants The plants are the filters of the wetland and we need them to grow and spread.
  • Native animals Native fish and other animals feed off the insects and balance the ecosystem. Pest species such as carp create muddy water. The City of Marion removes pest species.
Mosquitoes

Oaklands Wetland is a healthy wetland and has a low number of mosquitoes.

Levels of mosquitoes are regularly monitored at the site by Council in conjunction with the University of South Australia and the Adelaide and Mount Lofty Ranges Natural Resources Management Board.

How our community cares

Our community values the wetland, its wildlife and the green open spaces which the wetland can support. Visitors to the wetland show they care by:

  • Keeping dogs on leads and sticking to the designated areas
  • Allowing ducks and water birds find their own food - feeding them can make them sick and cause aggression
  • Leaving model boating for elsewhere
  • Leaving fishing for elsewhere
  • Supporting the Friends of Sturt River Landcare

Wetland tours and self-guided walks

Visitors can learn how the wetland functions, including its pumping infrastructure, electrical control equipment and the aquifer injection and extraction process.

The tours allow people to appreciate the extent and complexity of its infrastructure. It is already proving to be an important site for environmental education. The wetland is also being used for scientific research by Flinders University and Adelaide University.

For information about wetland tours, contact:

Glynn Ricketts 
Water Resources Coordinator

Public safety at Oaklands Wetland

A valued feature of Oaklands Wetland is the public's close interaction with the wetland and the aquatic life. The open water areas are a particular feature which give good water views and are a component of all stormwater treatment wetlands.

The majority of the wetland is shallow (less than 300mm) with extensive water plants. The open ponds are deeper (up to 1.7m) and don’t have emergent vegetation.

Designed for public safety

Public safety is very important and the wetland has a number of design features to ensure this and support adult supervision of children. These include:

  • At the water’s edge there is a minimum two and a half metre wide very mild sloped buffer zone before any deeper ponds. This extends to 250mm depth and then the batters increase in slope down to the deeper pools. Even 1 vertical to 3 horizontal slopes are quite trafficable.
  • The complete perimeter of the wetland is covered with mass planting that will discourage entry. The wetland edges are designed and constructed in accordance with Australian artificial water feature design guidelines.
  • Around the formal path and edge there is a 100mm high kerb which provides a physical barrier to the wetland for prams and the like.
  • The majority of bridge structures are low and over shallow water to allow close interaction with the wetland and its wildlife. Where there is a vertical drop of more than one metre a handrail is provided for safety.

All of these design elements meet the requirements of Australian Standards for design of such systems.

Council has independently verified this through their own risk assessment conducted by an external consultant. However, as with all areas of open space, it is important that children are supervised at all times.

Oaklands Wetland and Reserve master plan

The Oaklands Wetland and Reserve master plan includes the wetland, adventure play space, biodiversity corridor and recreation plaza.

Construction to upgrade the recreation plaza began in October 2014.

LGA Awareness Campaign video

This ‘behind the scenes’ YouTube video gives a unique insight into the recently unveiled $9 million Oaklands Wetland.

It also highlights the work done by our staff to build the award-winning wetland.

The special feature is part of a state-wide campaign to profile the role of councils and career opportunities in local government. Find out more at the Careers in Council website.