Аннотация
Article examines legal models of joint management of transboundary water resources in context of increasing water scarcity, climate change, and environmental risks. Purpose of study is to identify effective international and comparative legal mechanisms regulating cooperation between states and to determine key directions for modernizing existing governance models. Scientific and practical significance lies in systematizing contemporary principles of international water law and revealing gap between treaty norms and their implementation in different regions. Research methodology includes comparative legal, formal legal, and systemic approaches applied to analysis of 1992 and 1997 UN Conventions, regional agreements, and national legislation. Study establishes that effectiveness of transboundary water cooperation depends on completeness of treaty framework, institutional stability of joint commissions, availability of control and monitoring mechanisms, and integration of ecosystem-based approach. It is concluded that shift is required from declarative agreements toward comprehensive basin-oriented governance models. Special attention is given to role of data exchange and stakeholder participation. Importance of judicial safeguards for environmental rights is emphasized. Practical value of findings is linked to possible application in developing water policy and drafting interstate agreements.