Surface water flow of border rivers

(billion cubic meters per year)

Thailand is the top country by surface water flow of border rivers in the world. As of 2020, surface water flow of border rivers in Thailand was 480 billion cubic meters per year that accounts for 19.48% of the world's surface water flow of border rivers. The top 5 countries (others are Paraguay, Peru, Bulgaria, and Ukraine) account for 59.76% of it. The world's total surface water flow of border rivers was estimated at 2,463.5 billion cubic meters per year in 2020.

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What is surface water flow of border rivers?

Average annual flow of rivers that form the border between countries, taking into account water abstraction from upstream countries and/or agreed or accepted commitments towards downstream countries