The checklist for contingency planning for accidents affecting transboundary waters was prepared by the Joint Ad Hoc Expert Group on Water and Industrial Accidents, following a decision by the Conference of the Parties to the Convention on the Transboundary Effects of Industrial Accidents (Industrial Accidents Convention) at its sixth meeting (The Hague, 8–10 November 2010) and the Meeting of the Parties to the Convention on the Protection and Use of Transboundary Watercourses and International Lakes (Water Convention) at its sixth meeting (Rome, 28–30 November 2012). The checklist is intended