A Combined Methodology for Transboundary River Basin Management in Europe. Application in The Nestos–Mesta Catchment Area

Water management has been the focus of research, not only because of water scarcity, but also as a result of its sharing across national boundaries. Approximately 40% of the global population lives in tranboundary water basins, shared by more than one country, emphasizing the need for concerted management of transboundary water bodies and harmonization of policies. Under this view, water should be managed in an internationalized way, integrating methodologies and techniques used in natural as well as social sciences. Public participation and information are vital procedural safeguards of transboundary water recourses management and sustainable regional development. The paper presents a combined methodology based on traditional engineering oriented tools on the one hand and interactive public participation procedures on the other, applied in the Greek–Bulgarian transboundary Mesta/Nestos river basin.