Walpole-Nornalup

	Walpole-Nornalup Inlet at a glance
	Inlet area:		13.2 square kilometres
	Data selection

      

The inlets are surrounded by National Park of tall karri and tingle forest on hilly land to the north and coastal heath on tall dunes to the south. It is one of the few places on the coast where karri forest comes down to the sea, and has unmatched scenic beauty of immense heritage, lifestyle and tourism value.

The inlets are open to the ocean all year, and are connected by a one kilometre long channel. The channel from Nornalup Inlet to the sea varies from year to year, cutting through the mobile sands of the flood tide delta, and while there is no complete bar, the entrance to the sea is shallow (less than one metre) on the ebb tide.

In summer the salinity of Nornalup Inlet is approximately that of sea water (35 ppt) for about six months. The deep water is rarely less than 30 ppt at any time, but in winter surface salinity can fall to 10 ppt or less.

The summer temperature range for the Nornalup Inlet is 20 to 22°C., and in winter it ranges from 12 to 17°C. at the surface. The deep water is often several degrees warmer.

Nutrient levels are low.

Further Information:

An Inventory of Information on the Estuaries and Coastal Lagoons of South Western Australia. Nornalup and Walpole Inlets and other estuaries of the Deep and Frankland Rivers. Environmental Protection Authority; Perth, Western Australia. Estuarine Studies Series Number 2: March 1988