Surface water outflow not submitted to treaties

Peru is the top country by surface water outflow not submitted to treaties in the world. As of 2020, surface water outflow not submitted to treaties in Peru was 1,868 billion cubic meters per year that accounts for 18.25% of the world's surface water outflow not submitted to treaties. The top 5 countries (others are Colombia, India, China, and Brazil) account for 55.59% of it. The world's total surface water outflow not submitted to treaties was estimated at 10,234 billion cubic meters per year in 2020.