Geographically, it is situated on the far western side of the Sydney basin.

This park is located on the western edge of the Sydney Basin.

The town is located on the north-western edges of the Sydney basin.

Ulan is situated on the edges of the Sydney basin.

Geologically, the city is situated in the southern reaches of the Sydney basin.

Geologically, the area is located in the central-eastern part of the Sydney basin.

Definitions of the boundaries and what comprises the Sydney basin vary significantly.

Geologically, it is situated in the central parts of the Sydney Basin.

The Sydney Basin sits on the east coast of Australia.

Geologically, it is situated in the far southern reaches of the Sydney Basin.