non-navigational uses of international watercourses. fi/ The discussions were held on the basis of the second part of the fifth report of the Special Rapporteur, Mr Stephen McCaffrey (A/CN.4/421/Add.2) - which contained in 51 The topic was examined a:the 2158th to 2162nd and 2591st meetings held between 17 and 23 May and on 11 July 1990. w The topic was examined at the 2162nd to 2167th, 2187th and 2188th meetings held between 23 May and 1 June and on 5 and 6 July 1990. -6-partiaular two draft articles respectively entitled “Relationship beLween navigational and non-navigational uses*’ and “Regulation of international wateroourses” - as well as on the basis of the first part of the Special Rapporteur’s sixth report iA/CN.4/427 and Corr.1) which contained in partioular three draft articles respectively entitled “Joint institutional management”, “Protecticn of water resources and installations” and “Status of international watercoursas and water installations in time of armed conflict”, as well as an Annox entitled “Implementation of the draft articles” and consisting of six articles. At the conclusion of its discussion, the Commission referred to the Drafting Committee the above-mentioned draft srticles as well as article 3, paragraph 1 , and article 4 of the Annex. The Commission furthermore provisionally adopted 6 new articles on the topic (with commentaries thereto), namely articles 22 “Protection and preservation of ecosystems~', 23 “Prevention, reduction end control of pollution”, 24 “Introduction of alien or new species” and 25 “Protection and preservation of the marine environment”, comprising Part IV of the draft entitled “Protection and preservation”, as well as articles 26 “Prevention and mitigation of harmful conditions” and 27 “Emergency situations”, comprising Part V entitled “Harmful conditions and emergency situations”. The second part of the sixth report of the Special Rapporteur (A/CN,4/427/Add,l) was not discussed for lack of time.
**Analysis**
The text discusses the non-navigational uses of international watercourses, which suggests that it is related to natural resources and the environment. The topics mentioned, such as protection and preservation of ecosystems, prevention and control of pollution, and protection of the marine environment, further support this hypothesis.

**Category**
Natural resources and environment, Environment