Wallis Lake
Wallis Lake Show map of New South Wales Wallis Lake Show map of Australia
Location	Mid North Coast, New South Wales, Australia
Coordinates	32°18′S 152°30′E / 32.300°S 152.500°E / -32.300; 152.500
Lake type	An open and trained wave dominated barrier estuary[1]
Primary inflows	Wallamba River, Coolongolook River, Pipers Creek
Primary outflows	Coolongolook River to the Tasman Sea
Catchment area	1,196.9 square kilometres (462.1 sq mi)[2]
Basin countries	Australia
Managing agency	Mid-Coast Council
Max. length	25 kilometres (16 mi)[3]
Max. width	9 kilometres (5.6 mi)[4]
Surface area	98.7 square kilometres (38.1 sq mi)[2]
Average depth	2.3 metres (7 ft 7 in)[2]
Water volume	217,951.5 megalitres (7,696.88×10^6 cu ft)[2]
Surface elevation	0 m (0 ft)
Islands	Hadleys Island, Wallis Island
Settlements	Coomba Park, Forster, Green Point, Pacific Palms, Tuncurry
Website	NSW Environment & Heritage webpage
References	[5]

Wallis Lake, an open and trained wave dominated barrier estuary,^[1] is located within the Mid-Coast Council local government area in the Mid North Coast region of New South Wales, Australia. Wallis Lake is located adjacent to the towns of Forster and Tuncurry, and adjacent to the east coast, about 308 kilometres (191 mi) north of Sydney.

Drawing its catchment from within Wallingat National Park and the Wallamba River, Coolongolook River, and Pipers Creek, Wallis Lake has a catchment area of 1,197 square kilometres (462 sq mi) and a surface area of 99 square kilometres (38 sq mi).^[2] When full, Wallis Lake covers an area of around 10,000 hectares (25,000 acres),^[5] is approximately 25 kilometres (16 mi) long,^[3] with a width of 9 kilometres (5.6 mi).^[4]

Hadleys Island lies within Wallis Lake, near the confluence of the Wallamba and Coolongolook rivers.

The waterways surrounding Wallis Lake are well known for oyster production.^[6]

Lake Wallis was named in honour of James Wallis, an officer of the 46th Regiment.^[4]

• Wallis Island, New South Wales
• List of lakes of Australia

• "Karuah River and Great Lakes catchments" (map). Office of Environment and Heritage. Government of New South Wales.
• "Wallis Lake Wetland Strategy: Vision, Guiding Principles and Actions" (PDF). Great Lakes Council. October 2010. Retrieved 20 March 2013.
• "2012 Waterway and catchment report card for Wallis & Myall Lakes & Karuah Estuary" (PDF). Great Lakes Council. 2012. Retrieved 20 March 2013.
• Moore, Stephanie (May 2005). "Wallis Lake Estuary Management Plan" (PDF). Wallis Lake Estuary Management Committee. Great Lakes Council. Retrieved 20 March 2013.