Macquarie Harbour is a large, shallow, inlet, located in the West Coast region of Tasmania, Australia. The inlet is navigable by shallow draft vessels. The main channel is kept clear by the presence of a rock wall on the outside of the channels curve. This man made wall prevents erosion and keeps the channel deep and narrow, rather than allowing the channel to become wide and shallow. The harbour is named in honour of Scottish Major General Lachlan Macquarie, the fifth Colonial Governor of New South Wales.