The Otway Barham Catchment Landcare Group includes the settlement of Marengo and half of the township of Apollo Bay. Bordered to the west by the Great Otway National Park, the group encompasses the beautiful catchment of the Barham River.

The Barham River is a declared Water Supply Catchment and is the domestic water supply catchment for the local community. One of the aims of the Otway Barhan Catchment Landcare Group is to rehabilitate the river “from source to sea”.