The change in the water balance and timing of flows, including sudden surges in water volume and velocity, impact on our waterways and bays. Some of the effects may be to: change the structure, variety, and suitability of habitat for aquatic life such as fish and macroinvertebrates disturb animals and plants that live in the
In forested areas, the water balance or natural hydrology is altered only by rainfall and associated fluctuations in infiltration, evaporation, and transpiration from plant growth. But in urban areas, this natural hydrology is heavily modified, because the land has been cleared of vegetation and capped with ‘hard’ or impervious surfaces.
When new developments are planned, infrastructure and development controls are needed to manage stormwater and prevent flooding of properties. Treating, using, and retaining stormwater in the catchment can reduce the amount of stormwater reaching waterways and help reduce the frequency and severity of flooding. This is all part of a Water Sensitive Urban Design (WSUD),
Rainwater needs to be managed as it can have an impact on our urban waterways. For new developments, it is essential that the right controls are put in place to manage stormwater, prevent flooding, and improve water quality.