Paterson and Allyn Rivers


Catchment area - Paterson River / Allyn River

277 km2  /  367 km2     

Annual rainfall

850mm (Gresford), 955mm (Lostock)

Areas supplied

Gresford (population ~400), 100% of supply

Land use breakdown of catchment

82% agriculture (dairying, beef cattle poultry, timber), 18% National Park

On 1 July 2008, Hunter Water took over the water and wastewater networks operated by the Dungog Shire Council (DSC).  This included the water supply system to the township of Gresford.  Bulk water for this system is sourced from the Paterson and Allyn Rivers according to the availability & quality of water. The Allyn River water is the primary source of the two rivers (approximately 75% of volume).  Raw water is pumped to a micro-filtration plant where the water is treated. Dungog Shire Council administers the Paterson & Allyn rivers catchment and Hunter Water is responsible for the potable water supply. 

Allyn and Paterson Catchments

The Paterson and Allyn rivers rise in Barrington Tops National Park and Chichester State Forest and flow in a south-easterly direction. The headwaters of these rivers are both in excellent condition.

Lostock Dam is located on the Paterson River near the township of Lostock and algal growth within the dam can impact downstream water quality. The dominant non agricultural land use in the catchment is timber production and the major agricultural industries are dairying, beef cattle and poultry production.