Stormwater run-off from the surrounding urban catchment flows via drains and channels into Centennial Parklands’ ponds. The ponds are physically linked to each other via a series of sluices and pipes, and to the outside world via several major stormwater inlets. As a major stormwater retention basin, the ponds will always potentially be subject to human and environmental factors. Continuing issues are rubbish, turbidity, high nutrient levels, suspended silt and other solids.
Duck Pond provides vital habitat for large numbers of resident wetlands birds as well as a resting location for migratory birds. Subsequently, a large amount of bird faeces deposited in the water contributes to high nitrogen and phosphorous levels which can cause algal blooms. Duck Pond is a popular place for bird feeding. A build-up of excessive organic material such as bread also contributes to excessive algal growth.