The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales. This item is assessed as historically rare statewide. This item is assessed as scientifically rare statewide. The place is important in demonstrating the principal characteristics of a class of cultural or natural places/environments in New South Wales. This item is assessed as aesthetically representative locally. The dam received a Historic Engineering Marker from Engineers Australia as part of its Engineering Heritage Recognition Program.