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Understanding the Main Rivers map
The main rivers map shows which rivers in England are designated as Main Rivers.
The Environment Agency is responsible for carrying out maintenance, improvement or construction work on main rivers to manage flood risk.
Understanding the Main Rivers Consultation map
The main rivers consultation map shows proposed changes to the designated Main Rivers.
Addition shows proposed new sections to the designated main rivers.
Deletion shows proposed removal of sections from the designated main rivers.
The Environment Agency decides which watercourses are main rivers. We consult with other risk management authorities and the public before making these decision.