The project will implement the requirements of the Water Framework Directive (2000/60/EC) (hereinafter ‘WFD’), Marine Strategy Framework Directive 2008/56/EC (hereinafter ‘MSFD’) and relevant Lithuanian legislation on the management of surface water bodies in order to achieve good status. During the project, documents will be prepared containing updated/supplemented system of assessment of the status of surface water bodies, expert assessment of the status of surface water bodies, assessment of the impact of changes in hydromorphological characteristics of water bodies on surface water bodies, causes of non-compliance with good status in lakes and ponds, transitional and coastal, and in individual cases in river water bodies, economic analysis of water use and cost recovery, development of a baseline scenario according to WFD requirements, harmonised water protection objectives for surface water bodies. The results of the project will provide important scientific and expert information for the preparation of complex management plans and measures for the third river basin districts of Nemunas, Lielupe, Venta and Daugava. The project will also prepare a technical report to provide the European Commission with information on the third management plans for the river basin districts of Nemunas, Lielupe, Venta and Daugava. Taking into account the updated assessment of the environmental status of the Baltic Sea Area and the impact of human activities on their environment during Phase II of the MSFD, covering the period 2012-2017, the characteristics of good environmental status and updated environmental objectives and related indicators, an assessment of existing measures and identified shortcomings in the achievement of the objectives of the marine environment and good environmental status, an updated programme of measures to achieve and/or maintain good environmental status in the Baltic Sea, which will be submitted to the European Commission, will be prepared.