Myall Lake lies to the east of Bulahdelah, and forms part of the Great Lakes of NSW, the largest natural freshwater lake system on the New South Wales coast.

Myall Lake, Boolambyte Lake and the Bombah Broadwater are linked by narrow waterways to form a continuous lake system which is joined to Tea Gardens by the lower Myall River which becomes increasingly saline as the reaches the saltwater of Port Stephens.

The lakes have been listed as a wetland of international significance under the RAMSAR convention. To the east, between the lakes and sea, are high sand dunes with varied vegetation cover.

The extensive waterways are ideal for sailing, canoeing, kayaking, windsurfing, sunbathing, swimming and water skiing.