al/See, e.g. article 4 of the 1980 Convention c:eating the Niger Basin Authority, which provides that the Authority shall undertake activitir:s Kelating to the “[p]revention and control of drought and desertification .I.“. Natural Resources/Water Series No. 13, ~R&u, note 161, pp. 58 and 59, article 4, pare. (2) (cl (iv) and (d) (iv). See also the 1973 Convention establishing a Permanent Inter-State Committee on Drought Control in the Sahel, art. 4, subparas. (i) and (iv), document A/9178. - 173 -fact that co-operat-#e act ,on among watercourse States can do much to prevent or mitigate them, they are expressly mentioned in the article. (5) The kinds of measures that may be taken under article 26 are many and varied. They range from the regular Hnd tfmely exchange of data and information that would be of assistance, in preventirg and mitigating the conditions in question, to taking all reasonable steps to ensure that activities in the territory of a watercourse State are so conducted as not to cause conditions that may be harmful to other watercourse States. They may also include the holding of consultations concerning the planniug and implementation of joint measures, whether or not involving the construction of works, and the preparation of studieo of the efficacy of measures that have been taken. (6) Article 26 is based upon the provisions of numerous treaties, m/ decisions of international courts and tribunals, other evidence of State practice, and the work of international organisations, m/ Representative examples of these authorities have been surveyed and analysed in the Fifth report of the SpecPal Rapport-sur. 22p/ 1. For the purposes of the present draft article, “emergency” means a situation that causes, or poses an imminent threat of causing, serious harm to watercourse SLatas or other States and that results 2221 See, e.g. the syntematised collection of treaty provisions
**Analysis**
The text appears to be discussing international cooperation and agreements related to water resources and the prevention of drought and desertification. It cites various treaties and international organizations, which suggests that the topic is related to international relations and environmental management.

**Category**
Natural resources and environment