Jul 16, 2015
1. Rivers are some of the most diverse ecosystems on the planet. Rivers and lakes sustain more fish species than the sea even though they contain 600 times less water.
2. Rivers feed us. Freshwater fisheries currently sustain up to 550 million people on a fish-based diet.
3. Rivers are the cradles of our civilizations. Our most ancient cultures sprang up along rivers such as the Tigris and Euphrates, the Nile, the Indus, and the Yellow.
4. Dams have fragmented two thirds of the world's great rivers. They store about 7,000 cubic kilometers or one sixth of the water flowing in rivers.
5. Rivers shape our planet and have created some of its most beautiful landscapes. Think of the Grand Canyon, the Iguacu and the Victoria Falls!
6. We cry to Ol' Man River, dance By the Rivers of Babylon, and waltz along the Blue Danube. Rivers have inspired great music around the world.
9. By depositing nutritious silt on floodplains and deltas, rivers have created our most fertile agricultural lands, from the Mekong Delta to California's Central Valley.
10. Rivers sustain fish populations offshore. Because of the nutrients they carry to the sea, 80% of the world's fish catch comes from continental shelves.
11. Rivers unite us. Some 276 rivers flow across more than one country, and their basins cover almost half the Earth's land surface.
12. At most, 64 of our 177 longest rivers remain free-flowing, and many of them are threatened by fragmentation.
13. Rivers have brought us great movies. Films like African Queen, Deliverance and Aguirre, the Wrath of God have become classics.
14. Rivers generate power. Hydropower accounts for some 16% of the world's electricity - often at great cost to river ecosystems and communities.
15. In the US, one sixth of all inland freight is transported on rivers and canals. Navigation is the most energy-efficient mode of transport, but has turned healthy rivers into highways.
16. Every year, rivers take 200 million tons of carbon out of the ground and the air and transport it to the sea. They also power the role of oceans in taking carbon out of the atmosphere.
17. Because of over-exploitation, once mighty rivers like the Colorado, Indus, Nile, Rio Grande and Yellow are struggling to reach the sea.
18. Rivers inspire us and give religious meaning. In India and other countries, many rivers are revered as gods.
19. With a depth of more than 220 meters - four Niagara Falls stacked on top of each other - the Congo is the world's deepest river.
21. Over-exploitation of rivers through dam building and pollution threaten the water security of almost 5 billion people around the world.
22. Have you read Huckleberry Finn, Heart of Darkness, and A River Runs Through It? Rivers have inspired great literature in many countries.
23. Rivers have created some of the world's most-treasured natural heritage. More than 30 riverscapes - from the Pantanal to the Okavango Delta - have been recognized as World Heritage Sites.
24. Freshwater species have lost 76% of their populations since 1970 - twice the loss which marine and terrestrial ecosystems have suffered.
25. The Amazon discharges 84 Olympic-size pools into the sea every second - more than all European and North American rivers combined. It is the biggest river on the planet.
26. Healthy rivers and their floodplains absorb rainfall and release it over time. They protect us against the floods and droughts which are getting ever more severe under climate change.
27. Rivers provide important services such as water supply and regulation for free. They have been estimated to be 10-15 times more valuable per hectare than land and sea-based ecosystems.
28. Another 3,700 hydropower dams are currently under construction or in the pipeline. Many of them are located in river basins with high ecological values such as the Amazon and Mekong.
29. Rivers are the arteries of our planet. By connecting lands, lakes and the sea, they enable the circulation of nutrients, sediments, and living beings.
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