The conservation park covered an area of intertidal mangroves immediately south of Port Gawler beach.

[8] It was abolished on 8 August 2017 and its land holding was transferred to the Adelaide International Bird Sanctuary National Park—Winaityinaityi Pangkara.

In 1980, the conservation park was described as follows:[8]A tidal flat featuring a mangrove (Avicennia marina) low woodland and small areas of samphire (Tecticornia spp.)

The park also includes a low shell-grit dune surrounded by mangroves but exhibiting a flora which includes dry-land elements such as Callitris preissii and Myoporum insulare... One of the larger areas of the Mangrove and Samphire association conserved in the state, an association that has been markedly depleted in South Australia.

Port Gawler Conservation Park, in conjunction with other mangrove areas, is an important breeding and feeding ground for commercially important marine fauna, including sea garfish, silver whiting, blue swimmer crabs and western King prawns.The conservation park was classified as an IUCN Category III protected area.