Waterways and catchments

The Ku-ring-gai Local Government area spans three of Sydney's major catchments:

  • The Lane Cove River Catchment to the south-west (Sydney Harbour);
  • Middle harbour to the east (Sydney Harbour)
  • Cowan Creek Catchment to the north (Hawkesbury Estuary).

Pacific Highway and Mona Vale Road provide an approximate indication of the major catchment boundaries.

Waterways and creeks

A large proportion of the creeks remain in semi-natural to natural condition in private easements, parkland and bushland reserves. This is a significant benefit to the Ku-ring-gai's riparian ecosystems and the receiving environments of Sydney Harbour and the Hawkesbury Estuary.

For more information please go to Creeks and Riparian Zones


Saltmarsh is a salt-tolerant plant community in tidal areas, often found behind mangroves. In Ku-ring-gai there are small pockets of saltmarsh located in the tidal areas of Middle Harbour.

Local Land Services

Since January 2014 the Greater Sydney Local Land Services (GSLLS) has replaced the former Catchment Management Authorities. The GSLLS coordinates actions through its regional Catchment Action Plans (CAP) to help improve water quality and fish passage as well as increase riparian vegetation and aquatic habitat. These actions aim to improve biodiversity, preserve soils and protect and improve marine and estuarine environments.

The Greater Sydney Local Land Service Transition CAP will provide important natural resource management information for the new Greater Sydney LLS region and provide the NRM component of future Local Land Service Strategic Plans. 

For more information you can visit the Greater Sydney Local Land Services website.