The purpose of the brief is to analyze the current state of water management and planning of implementation of projects that have an impact on the environment that result from the failure to conduct environmental assessments in full, which complicates the decision-making process and creates conflict situations. Any activity planned in Ukraine must guarantee environmental safety. For the purpose of ensuring compliance with environmental sustainability conditions in decision-making, in particular related to protection of water resources, there are environmental assessments – strategic environmental assessment (SEA) and environmental impact assessment (EIA). The primary task of strategic environmental assessment (SEA) is to make sure that a document of state development planning of a certain branch complies with already existing documents in the area of environmental protection and develop conditions for future development in compliance with environmental security, in particular, to coordinate the protection of rivers as natural formations that are used as waterways. SEA must provide for certain conditions for conducting an environmental impact assessment of a specific planned activity envisaged and determined by a state planning document. EIA is aimed at preventing environmental damage, ensuring environmental safety, environmental protection, rational use and reproduction of natural resources in the process of making decisions about economic activities that can have a significant impact on the environment, taking into account state, public and private interests.