Lake Illawarra (Aboriginal Tharawal language: various adaptions of Elouera, Eloura, or Allowrie; Illa, Wurra, or Warra meaning pleasant place near the sea, or, high place near the sea, or, white clay mountain ), an open and trained intermediate wave dominated barrier estuary or large coastal lagoon, is located in the Illawarra region of New South Wales, situated about 100 kilometers south of Sydney, Australia.