In this article, we intend to raise the issue of water information systems of the countries bordering the Black Sea. The watershed tributaries of the Black Sea basin belong to the Danube, the most developed of them, Dniester, Bug, Kamchia, Kuban, etc. Because the coordination of information systems for water throughout the basin of the Black Sea would have been very difficult due to lack of linguistic, geographical, political and economic homogeneity of neighboring countries, this research will focus on three countries of the southern and eastern shores of the Black Sea, such as Romania, Bulgaria and Turkey. Thus, the thread of this article will be to provide an overview of the concepts, methods and available information systems for water that all three countries have developed so far, in order to draft some recommendations and develop possible solutions in terms of waterresources and hydro-informatics management in the countries with the biggest deficits from this point of view, from North Africa and not only.