| St Georges Basin | |
| Other Name: | Bherwherrae or Bherwherree |
| Pushpin Map: | New South Wales |
| Caption Map: | St Georges Basin, relative to its location in New South Wales and the Jervis Bay Territory. |
| Location: | South Coast, New South Wales and the Jervis Bay Territory |
| Coords: | -35.1897°N 150.59°W |
| Type: | Open intermediate wave dominated barrier estuary;[1] or inland sea |
| Inflow: | Wandandian Creek, Tomerong Creek |
| Outflow: | Sussex Inlet, Tasman Sea |
| Catchment: | 316km2 |
| Basin Countries: | Australia |
| Area: | 40.9km2 |
| Depth: | 5.3m (17.4feet) |
| Cities: | Sussex Inlet, St Georges Basin |
| Reference: | [2] |
St Georges Basin is an open intermediate estuary,[1] or inland sea, located in the South Coast region of New South Wales, adjacent to the Jervis Bay Territory.
St Georges Basin is a coastal waterbody located immediately adjacent to the Tasman Sea of the South Pacific Ocean, north of the town of Sussex Inlet and east of the town of St Georges Basin. The basin is fed by Wandandian Creek and Tomerong Creek and its primary outflow is to the Tasman Sea via the Sussex Inlet. The basin covers a catchment area of and contains approximately of water over an estimated surface area of ; and at an average depth of .[3]
Located with the basin are six artificial reefs that range up to in depth.
The traditional custodians of the land surrounding St Georges Basin were the Indigenous Australian Yuin people, who named the basin as Bherwherrae or Bherwherree.
European surveyor Thomas Florance renamed the body of water as St Georges Basin on 29 November 1827, while tracing from Jervis Bay to Conjola.