No abstract

The legal principle of reciprocity plays a strong role in the law of international watercourses in both bilateral and multilateral contexts. China, primarily an upstream state, shares transboundary rivers with 14 neighbouring states. These shared rivers are governed by a variety of treaties and soft law documents, with China preferring to take a bilateral approach. Building on previous research, this article aims to elaborate on the role that reciprocity has played in the development, maintenance and interpretation of the law of international watercourses and then applies this to China’s transboundary water treaties. For these purposes, this analysis focuses on China’s approach to sovereignty on its transboundary waters and the substantive, procedural and dispute settlement rules of China’s transboundary treaties, as well as future developments, including the influence of the concept of ‘common interests’ on China’s practices. There have been significant developments in China’s transboundary water cooperation, as transboundary waters are increasingly important for China’s development. The article concludes with the example of the China-led Lancang-Mekong Cooperation Mechanism, highlighting its reciprocal characteristics and pathways for future development.

The law of international watercourses consists mainly of a series of bilateral, multilateral, regional, and global agreements that establish binding rules through which state parties jointly manage transboundary water resources. China similarly manages its shared freshwaters through a series of bilateral agreements. Increasingly, however, it relies on non-binding soft law instruments to manage these resources with its riparian neighbours. An important example of this is the Lancang-Mekong Cooperation, a branch of the Belt and Road Initiative. Its use of soft instruments, which recognize international law and promote projects, displays evidence of merging and emerging normativities, ensuring that it is capable of playing both a supporting and a developmental role in the law of international watercourses.

The United Nations Convention on the Law of the Non-Navigational Uses of International Watercourses, 1997, finally entered into force in August 2014 after nearly 17 years. To explain this delay scholars point to, among other reasons, misconceptions of the substantive rules of equitable and reasonable use and the duty not to cause significant harm, particularly between upstream and downstream states. Reciprocity plays an important role within international law especially in treaties, where it informs the distribution of rights and duties, advantages and disadvantages, establishing balance and fairness in the legal regime. Together, this ensures that states cannot interpret treaty provisions in their favour. Using the Convention on the Law of the Non-Navigational Uses of International Watercourses as an authoritative text, this article aims to analyse the substantive rules of international law concerning transboundary water resources including equitable and reasonable use and the duty not to cause significant harm through the lens of reciprocity and the interests of China. In doing so, it aims to provide a more nuanced understanding of the rules and to establish that these principles do not favour upstream or downstream states, but instead promote balance among riparians.

No abstract