Commonwealth v Tasmania (1983) ------ High Court interpretation of the constitution!
(popularly known as the Tasmanian Dam Case) was a significant Australian court case, decided in the High Court of Australia on July 1, 1983. The case was a landmark decision in Australian constitutional law, and was a significant moment in the history of conservation in Australia. The case centred around the proposed construction of a hydro-electric dam on the Gordon River in Tasmania, which was supported by the Tasmanian government, but opposed by the Australian federal government and environmentalist groups.
The case revolved around several major constitutional issues, the most important being the constitutional validity of the World Heritage Act. The division of powers between the Australian federal government and the individual state governments is defined by section 51 of the Australian constitution. The federal government had taken a range of actions, which they claimed were authorised under specific subsections of section 51. The Tasmanian government disputed these claims.
Section 51(xxix) of the Australian Constitution gives the federal parliament the power to make laws with regard to external affairs, a nebulously defined provision. The Hawke government passed the World Heritage Act under this provision, claiming that the Act was giving effect to an international treaty to which Australia was a party, in this case the Convention Concerning the Protection of the World Cultural and Natural Heritage,which governs UNESCO's World heritage program.
The Tasmanian government (as well as the governments of Victoria, New South Wales and Queensland) opposed this action. Allowing the federal government such broad new powers would infringe on the States' power to legislate in many areas, and would upset the "federal balance".