Skip to main content
SES - NSW State Emergency Service NSW Government - Office of Environment and Heritage

NSW Flood Data Portal

Guidance, Tools and Resources

Cox's Creek Catchment - Hydrogeological Investigation & Dryland Salinity Studies

A Joint venture between the Department of Water Resources (DWR) and the Soil Conservation Service (SCS) Department of Conservation and Land Management, has led to investigations into rising water levels and dryland salinity within the Liverpool Plains catchment. The Liverpool Plains catchment encompasses an area of 11728 km2 (1 172 800 hectares) and is comprised of both the Mooki River catchment (7648 km2) and the Coxs Creek catchment (4080 km2).

An area of 195 000 hectares, within the Liverpool Plains catchment, has water levels lying within five metres of the ground surface. However, 30 000 hectares has water levels within two metres of the ground surface and is causing soil salinization and crop yield decline. Depending on the hydrogeological regime and the rates of water level rise in a given area, it is considered that all areas with a standing water level less than five metres is at risk of salinization.

This report documents the findings for the Coxs Creek catchment hydrogeological investigation. The objectives are to determine the driving forces behind the rising saline water levels and to formulate a remedial strategy, both engineering and biological. This can be achieved by determining the inter-relationship between geologic materials and the occurrence, distribution, movement and chemistry of the deep and shallow groundwaters.

Additional Information

Field Value
Title Cox's Creek Catchment - Hydrogeological Investigation & Dryland Salinity Studies
River Basin 419 - Namoi
Publication Date 1 August 1994
Themes Land and Resource Management
Spatial Extent
© OpenStreetMap contributors
Author/ Prepared by Department of Water Resources NSW
Publish date 24 June 2020
Update date 24 June 2020
Approval State Approved
Submitted for approval 25 June 2020
Submitted by Akhil Sud
Approved 25 June 2020
Approved by dstazic
Identifier 104fa26a-f401-4e96-bfa4-258eefad876c