Brisbane Water is a wave-dominated barrier estuary[2] located in the Central Coast region of New South Wales, Australia.

Forming part of the same tidal estuary system is a separate but connected basin, the Kincumber Broadwater, lying to the east of Davistown.

The land adjacent to the Brisbane Water was occupied for many thousands of years by Australian Aboriginal peoples, the Darkinjung and Kuringgai, who used the estuary and foreshore areas for cultural purposes.

Access to existing key vantage points allows for the public to experience the landscape character of the Brisbane Water estuary and its surrounds.

[7] Some 2,277 hectares (5,630 acres) of Brisbane Water is classified by BirdLife International as an important bird area because it has an isolated population of up to ten breeding pairs of bush stone-curlews and sometimes supports flocks of the endangered regent honeyeater and swift parrot during autumn and winter, when the swamp mahogany trees are in flower.