Williamina Court Park Narangba currently has a significant overland flow path that drains a 58-hectare catchment. It includes a concrete low flow channel that runs to a small pond next to Oakey Flat Road. The existing pond is full of sediment and prone to outbreaks of aquatic weeds.
This site has been identified in Councils Total Water Cycle Management Plan (TWCMP) as a suitable location to upgrade to include vegetated stormwater quality improvement infrastructure. Such upgrades will meet Councils environmental objectives.
Council proposes to replace the existing concrete drain with a naturalised constructed waterway. The constructed waterway will consist of a rocky and vegetated low flow channel. It will incorporate a rock and soil matrix, surrounded by a broader vegetated floodplain. The modified pond will create a more self-sustainable system, with improved vegetated edges. Plants within the pond will help capture sediment and nutrients contained within stormwater.
The naturalised channel and the stormwater treatment pond will include sediment ponds. Sediment ponds act as pre-treatment, protecting the downstream waterways from sedimentation.
The stormwater quality improvement works will include:
- replace the concrete drain with a naturalised waterway
- remediation of an existing urban pond to provide a stormwater treatment function
- minimise adverse flood impacts and sediment loading by introducing two sediment basins
- improve the aquatic and terrestrial ecological values of the waterway and park
- meet reduction targets for stormwater pollutant loads.
The expected outcomes are:
- improved water quality and biodiversity
- improved pedestrian connectivity
- landscaped parklands with improved visual amenity
- low maintenance self-sustaining green infrastructure
- improved water quality in Burpengary Creek.
View the Williamina Court community information plan for further details:
Williamina Court community information plan(PDF, 2MB)