About Kedron Brook Catchment

Kedron Brook drains coastal plain just north of Brisbane. The headwaters lie in Brisbane Forest Park and drain eastern slopes of D‘Aguilar Range. Kedron Brook flows through a mostly urbanised catchment to Moreton Bay, an ecologically significant area for waders and aquatic organisms. Link to map

Prior to settlement relatively permanent flow in Kedron Brook would have been and important resource for aboriginal people as well as native fauna.

Early settlement in colony of Brisbane expanded along waterways like Kedron Brook where freshwater and food resources were exploited.  Link to History.

There are scant records of native flora and fauna at time of settlement. The variable landscape though which Kedron Brook flows would have provided habitat for a diversity of flora and fauna.

Being an urban catchment, environment is highly modified and many of original species no longer occur in area. Nevertheless, Kedron Brook currently supports a diversity of wildlife and has variable vegetation. Remnant areas of natural vegetation still occur along different sections of stream.

Diversity of catchment

The Kedron Brook catchment contains several different landforms, geological formations and soil types (Physical Environment). Each in turn can support different plant and animal communities.

Land use and development

Most of middle reaches of Kedron Brook catchment are well-established urban areas. Natural vegetation has been “fragmented” into small remnants often isolated by roads and houses. Changes to environment through urbanisation are described in  ‘An urban catchment’.


Kedron Brook supports many species in different habitats as it meanders from hills to Moreton Bay. Birds are conspicuous in parks and gardens and in vicinity of stream. Ground dwelling fauna tend to be less conspicuous but many species of lizard, snakes and amphibians are present. Little is known of exactly which species live in catchment and what their lifestyle patterns are.

The diversity of natural communities associated a stream reflect stream complexity and water quality. These attributes of Kedron Brook are described in Stream characteristics.

Kedron Brook is important for both local wildlife and many transient, migratory or nomadic species that visit catchment. (Flora and Fauna)

Problems and environmental issues

Some of key issues may be summarised as:

  • Maintaining adequate resources to support wildlife
  • Degradation of remnant natural areas by weed infestation (link to weed page)
  • Loss of native species
  • Further losses of habitat through development and redevelopment of land
  • Improvement of quality of water discharged to Moreton Bay

Bushcare activities aim at restoration of habitat and enhancement planting to facilitate wildlife. Removal of invasive introduced species (weeds) is a major component of on-ground Bushcare activities.