This &#x27;Flooded&#x27; Gum (Eucalyptus Grandis) is the tallest known tree in NSW.  It is estimated to be about 400 years old and stands 84.3 metres (277ft) tall &amp; measures 2.7 metres (9ft) through at breast height. The Grandis Tree is north of Bulahdelah in the Myall Lakes National Park - NSW