American River is a town in the Australian state of South Australia located on the western shore of Eastern Cove on Kangaroo Island.

Nepean Bay is a bay located on the north-east coast of Kangaroo Island in the Australian state of South Australia about 130 kilometres south-south-west of Adelaide. It was named by the British navigator, Matthew Flinders, after Sir Evan Nepean on 21 March 1802.