Rain garden - Gowrie (Lake Tuggeranong catchment)

Rain garden, Gowrie Playing Fields, Gowrie

Situated on the southern edge of the Gowrie Playing Fields, this rain garden is the 20th infrastructure project to be built as part of ACT Healthy Waterways and the seventh in the Lake Tuggeranong catchment. Construction will be completed by the end of June 2019.

With a total treatable area of 3000 square metres, the rain garden is split into a number of cells. Water is diverted to it from an existing stormwater pipe, south of the Castleton Crescent underpass.

The treated water then returns to the stormwater system flowing into Tuggeranong Creek further downstream which, in turn, flows into Isabella Pond and Lake Tuggeranong.

Some trees were removed prior to construction however, Casuarina cunninghamiana and Eucalyptus rubidia (to suit the existing trees on the site) have been planted on site.

The completed rain garden will remove over 57,000 kg of nitrogen, phosphorous and suspended sediment every year.

Design changes

During the final design phase, some changes were made to the original concept designs to accommodate services, community feedback and maximise water quality benefits.

  • Site location moved north east within the same block to better suit the existing stormwater system of the area.
  • The stormwater diversion pipe has been relocated to suit the new site location and is to be installed below the existing carpark to protect adjacent trees.
  • Sediment bays have been combined to a single larger structure to facilitate maintenance.
  • The size of the asset has been increased by approximately 5%.

More information

Find out what you can do on your own block to improve water quality in our lakes and waterways.

Landscape design plan