Article 1

1.1.1 Scope overview

From a legal perspective, the issue of scope is linked directly to the laws that define the legal coverage of a treaty.87 Applied to the sharing of an international watercourse, the scope of a treaty normally defines the parameters of the watercourse regime including (but not limited to) the geographical and hydrological boundaries; the types of water uses and activities; the substantive measures guiding such water use; and the state parties to which the treaty applies.88

87 Vienna Convention on the Law of Treaties (adopted 23 May 1969, entered into force 27 January1980) UN Doc A/Conf.39/27, 1155 UNTS 331 (Vienna Convention) Art. 29 ‘Territorial scope of treaties’ provides, ‘Unless a different intention appears from the treaty or is otherwise established, a treaty is binding upon each party in respect of its entire territory’.

88 For examination of state practice defining ‘scope’ as it relates to international watercourses see Wouters P, ‘The International Law of Watercourses : New Dimensions’ 3 Collected Courses of the Xiamen Academy of International Law (Martinus Nijhoff 2011) at 377.

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