Catchments

A catchment is the area of land feeding water to a drainage system of rivers, creeks etc.  The water flow may be from surface run-off (water that drains or flows off the surface of the land) or groundwater (water that fills spaces between soil and rock particles underground and is located below the earth's surface).

For more information click on the following highlighted links:


Catchments

In rural areas, rainwater that falls within a catchment makes its way over land and into our creeks, rivers and wetlands.  In urban areas, rainwater that falls within a catchment is collected by gutters and pipes and then channelled into the stormwater system, through stormwater drains.

There are two major catchments in the Liverpool local government area - the Hawkesbury Nepean catchment and Georges River catchment.  Each of these larger regional catchments contains sub catchments (smaller localised catchments) and a variety of rivers, creeks, lakes and wetlands.

The areas of these catchments often extend across Council boundaries so Liverpool City Council jointly manages the catchments with other councils.  Council participates in two committees that help coordinate government and community efforts including the Hawkesbury Nepean Local Government Advisory Group (HNLGAG) and Georges River Combined Council's Committee (GRCCC).

There are also two Catchment Management Authorities (CMAs), which tackle issues on a regional level.  These are locally driven organisations with a board that reports directly to the NSW Minister for Natural Resources and coordinate natural resource management (NRM) in each catchment.  Council, through the HNLGAG and GRCCC has funding provided by, and works with, the CMAs to help improve the management of the catchments.


Hawkesbury Nepean Catchment

The Hawkesbury Nepean catchment is very large; it covers over 22,000 square kilometres (2.2 million hectares).  In the Liverpool local government area (LGA) the Hawkesbury Nepean catchment covers the majority of the western half of the Liverpool LGA extending west to the Hawkesbury Nepean River (the Liverpool LGA boundary).  It includes two sub catchments, the South Creek catchment and Upper Nepean catchment.

South Creek Catchment

The South Creek catchment is a sub catchment of the Hawkesbury Nepean catchment.  It covers an area of 620 square kilometres and is home to more than 300,000 people.  The portion of South Creek catchment in the Liverpool LGA includes three major creeks - Kemps Creek, South Creek and Badgerys Creek.  The catchment is mostly made up of small rural farms and residential houses.The main issues affecting the South Creek catchment include loss of vegetation, poor water quality and high soil salinity.

A large area of the South Creek catchment has been selected as a growth centre as part of NSW Government's Metropolitan Strategy. This will include the release of land over the next 25 to 30 years and will contribute to a significant amount of new housing for the Sydney metropolitan area.

Upper Nepean Catchment

The Upper Nepean catchment is a sub catchment of the Hawkesbury Nepean catchment.  It has an area of 1,750 square kilometres and is home to more than 52,000 people.  The Liverpool LGA includes the Hawkesbury Nepean River where Council's boundary stops.  The Upper Nepean catchment is mainly rural with some smaller residential lots.  It contains a large number of farms that have intensive agriculture operations and livestock.

The main issues in the Upper Nepean catchment are maintenance of the rural character and culture of the area, poor water quality, loss of soil through erosion and loss of bushland through clearing of vegetation for farming.  As the majority of land in this area is privately owned, Council and landowners need to cooperate to help sustain this area.

Hawkesbury Nepean Local Government Advisory Group (HNLGAG)

The Hawkesbury Nepean Local Government Advisory Group consists of 22 councils whose areas when combined, make up the Hawkesbury Nepean catchment.  Representatives from the councils meet once every two months to discuss issues impacting on the Hawkesbury Nepean catchment. These issues include management of bushland on private lands, tackling aquatic weeds and joint grant funded projects.

Hawkesbury Nepean catchment Management Authority (HNCMA)

The NSW Government established the HNCMA in 2004. The primary role of the HNCMA is to ensure the protection and sustainable development of land, vegetation and water resources within the catchment.

The HNCMA is working with the Hawkesbury Nepean Local Government Advisory Group and Hawkesbury Nepean catchment Management Board to produce a catchment Action Plan (CAP).  This CAP will include investment strategies to target areas of highest priority i.e. those areas in need of protection, preservation or repair.  They recommend and manage incentive programs for local communities and landholders to protect the waterways and bushland.


Georges River Catchment

The Georges River catchment covers nearly 1,000 square kilometres and 14 local government areas.  It also covers a large portion of the Sydney metropolitan area.  The Georges River catchment covers most of the eastern half of the Liverpool LGA and includes three sub catchments, Prospect Creek catchment, Liverpool District catchment and Mid Georges River catchment.

Prospect Creek Catchment

The Prospect Creek catchment is a sub catchment of the Georges River catchment.  The catchment covers an area of 98 square kilometres.  Only a small portion (2.4 per cent) of the Prospect Creek catchment is in the Liverpool LGA, including part or all of the suburbs of Busby, Green Valley and Heckenberg.  Most of the catchment is in the Fairfield LGA.

The waterways in the catchment are a mix of natural creeks, concrete lined channels and enclosed pipe drainage systems.  The catchment is quite urbanised with a population of over 190,000 people.  Most of the catchment is residential and industrial areas with some open space areas.  The catchment has high environmental, social and economic values.

Liverpool District Catchment

The Liverpool District catchment is a sub catchment of the Georges River catchment.  The catchment covers an area of 103 square kilometres and is almost wholly contained in the Liverpool LGA with only small potions in the Fairfield and Campbelltown Council areas.  Cabramatta Creek and the creeks that flow into Cabramatta Creek including Brickmakers Creek, Hinchinbrook Creek and Maxwells Creek drain most of the catchment.  Other creeks within the catchment include Anzac Creek and Glenfield Creek.

The bulk of the catchment is urban with a population currently around 120,000 and still growing.  This rapid growth and presence of large industrial areas such as at Moorebank places pressure on the waterways, as they become a hotspot for pollution.  Nevertheless, it also contains a number of open spaces and large public and private recreational areas such as Chipping Norton Lakes, golf courses and the Australian Jockey Club at Warwick Farm.

This catchment has had large areas of land cleared for development that has led to poor water quality and highly modified creeks through channelling to help prevent flooding.  It still retains, however, high environmental values in some areas and also has high social and economic values.

Mid Georges River Catchment

The Mid Georges River catchment is a sub catchment of the Georges River catchment.  The catchment covers an area of 80 square kilometres.  The catchment contains the Georges River, Williams Creek, Harris Creek and Deadmans Creek and part or all of the suburbs of Chipping Norton, Moorebank, Hammondville, Voyager Point, Pleasure Point and Holsworthy.  The land owned by the Department of Defence in Holsworthy covers a large part of the catchment.

The portion of the Georges River contained within this catchment is where the transition between the upper freshwater and lower estuarine (salty) water and is used for a number of water based activities including water skiing, boating and fishing.  Public health and safety is an issue of high importance in this catchment along with environmental values such as the plants and animals and scenic views.

Georges River Combined Council's Committee (GRCCC)

The GRCCC consists of nine councils whose areas when combined make up the Georges River catchment.  Representatives from the councils meet once every month to discuss issues impacting on the Georges River catchment. These issues include improving water quality, stormwater pollution, tackling aquatic weeds and joint grant funded projects.

The Council's on the GRCCC and NSW Waterways Authority work together through the Riverkeeper program.  The Riverkeeper program is supported by the New South Wales Department of Environment and Conservation who employ officers as Riverkeepers.  The Riverkeepers roles are varied, it involves working with the community to develop programs for the environmental protection of the river, to working with NSW Department of Corrective Services to help clean up pollution and re-vegetate the riverbanks.

The Riverkeepers work as the eyes and ears of the Georges River and spend much of their time on the river monitoring its condition and ensuring people are doing the right thing.

Georges River Coastal Zone Management Plan

The Georges River estuary is one of the most important estuaries in Sydney and is of high ecological, social and economic value. The CZMP applies to all estuarine waters of the Georges River extending from Liverpool Weir to Towra Point. This includes the river foreshores, the Botany Bay foreshore and all tidal waters that flow into the Georges River. The plan also applies to the Georges River catchment and identifies actions in the catchment that impact on the river.

The GRCZMP sets the strategic framework for the future management, over a period of 5-10 years, of the Georges River Estuary and also includes an action plan. The plan aims to conserve and improve the existing natural environment of the estuary and improve water quality. The plan was finalized in July 2013 and adopted by our Council and also participating member Councils of the GRCCC (Rockdale, Kogarah, Hurstville, Bankstown, Sutherland, Liverpool and Fairfield City Councils). The Minister for the Environment Certified the CZMP in March 2015 and the plan is effective from the date it is published in the NSW Government Gazette.  

Under the Environmental Planning and Assessment Act, 1979, CZMPs are to be taken into consideration in determining relevant development proposals under Section79C. This has implications for development assessment decisions as the plan is relevant to proposals that may have an impact on the Georges River.

For further information on the plan and the background estuary processes study, visit the GRCCC website at http://www.georgesriver.org.au/Estuary-Management-Plan.html

Gazettal notice councils


Sydney Metro catchment Management Authority (SMCMA)

The NSW Government established the SMCMA in 2004.  The primary role of the SMCMA is to ensure the protection and sustainable development of land, vegetation and water resources within the catchment.

The SMCMA is working to produce a Catchment Action Plan (CAP).  This CAP will include investment strategies to target areas of highest priority i.e. those areas in need of protection, preservation or repair.  They recommend and manage incentive programs for local communities and landholders to protect the waterways and bushland.