Thornlie, Western Australia, sits in Cockburn. The closest water is often not the quietest one. On the doorstep and beyond: 9.6 km out stands Tomato Lake, 10.9 km out stands Forrestdale Lake to the south, 13.2 km out stands Lake Brearley then 13.4 km out stands Yangebup Lake to the south-west. Yangebup Lake is