Abstract: In the article on the basis of socio-ekologo-economic necessities and requirements of international normative acts argued necessity of general management transfrontal water resources. As a result of study of world experience basic directions are selected and stages of perfection of mechanisms of water control, placed on the scopes of the states. For creation of the systems and increase of efficiency of general management transfrontal water resources grounded necessity of presence of political readiness and desire of countries to the collaboration, perfection of legal and instituciynoy base, creation of organizational structures of joint management of transboundary water bases are grounded on the basis of integrated integrated approach on the basin principle. It is recognized appropriate to develop and implement joint plans for water basin management, to participate in the management processes of stakeholder representatives, civil society and water users, to provide information on the management of transboundary water resources. The types of needs and basic principles of financial support for the activity of basin organizations as one of the necessary conditions for the functioning of the mechanism for managing transboundary water resources are investigated. A method for determining the share of States' contributions to a transboundary basin organization is proposed based on the application of the principle of proportionality according to the area of the basin within their territories, taking into account the coefficients of interests and opportunities.
Keywords: transboundary water resources, management of transboundary water resources, improvement of management of transboundary water resources, financial support for basin organizations