The focus of GAWB's catchment management is to achieve an appropriate balance in commercial, water quality and environmental outcomes. The main risks for the raw water quality in Lake Awoonga are the land uses and environmental features of the upper Boyne River catchment over which GAWB has limited control. GAWB is an active member of the Fitzroy Basin Association's Boyne Calliope Catchment Management which promotes neighboring landholder activities that maintain and improve water quality, riparian fencing and off-stream watering points for cattle.
The Boyne Valley catchment is approximately 2,230km2. The quality of water within Awoonga Dam is significantly influenced by the type and management of land use activities in the catchment, with nutrients and sediment levels attributed to the land clearing and cattle grazing that has occurred in the Boyne Valley over the past 100 years.
Raw water collected from the catchment runs into the Boyne River and is stored in Lake Awoonga. The storage of water in Awoonga Dam involves a combination of physical, chemical and biological changes which are influenced by the size and shape of Lake Awoonga. Inflow and weather conditions, amongst other things, affect water quality and its suitability for use.