In cases where a coastal State, being Party to this Convention, is directly and significantly affected by trans-boundary impact, the Riparian Parties can, if they all so agree, invite that coastal State to be involved in an appropriate manner in the activities of multilateral joint bodies established by Parties riparian to such transboundary waters.
V primerih, ko je obalna država pogodbenica te konvencije neposredno in znatno prizadeta zaradi čezmejnega vpliva, lahko obrežne pogodbenice, če se vse tako sporazumejo, povabijo to obalno državo, da se ustrezno vključi v dejavnosti večstranskih skupnih teles, ki jih ustanovijo pogodbenice, ki ležijo ob obrežjih takšnih voda.