The Cooks River Midden is located on a hill slope overlooking the Cooks River and is registered on the NSW National Parks and Aboriginal Heritage Information and Mangement System.

Estuarine shell species include:

Sydney cockles (Anadara trapezia) and Mud oysters (Ostrea angasi) as well as a smaller number of Herciles whelk (Pyrazus ebeninus).

In Area 1 the shell has been exposed by earth removal in levelling for a road, a 24 mm silcrete flake stone artefact was found. A dark grey/brown sediment overlies the in situ shell and forms the matrix to the midden. The lowest section of in situ shell material overlies a sandy clay devoid of shell. Below this clay is sandstone bedrock.

The midden at Kendrick Park contains estuarine shell species commonly found in shell middens along estuaries in the Sydney region. The midden contains intact shell to a depth of 40cm. Given that it is the only surviving open shell midden along the Cooks River the site is of high significance.