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  2. List of river systems by length - Wikipedia

    en.wikipedia.org/wiki/List_of_river_systems_by...

    In particular, there seems to exist disagreement as to whether the Nile [3] or the Amazon [4] is the world's longest river. The Nile has traditionally been considered longer, but in 2007 and 2008 some scientists claimed that the Amazon is longer [5] [6] [7] by measuring the river plus the adjacent Pará estuary and the longest connecting tidal ...

  3. Nile - Wikipedia

    en.wikipedia.org/wiki/Nile

    The Nile is the longest river in Africa. It has historically been considered the longest river in the world, [3] [4] though this has been contested by research suggesting that the Amazon River is slightly longer. [5] [6] Of the world's major rivers, the Nile is one of the smallest, as measured by annual flow in cubic metres of water. [7]

  4. List of rivers of Europe - Wikipedia

    en.wikipedia.org/wiki/List_of_rivers_of_Europe

    The border of Europe and Asia is here defined as from the Kara Sea, along the Ural Mountains and Ural River to the Caspian Sea.While the crest of the Caucasus Mountains is the geographical border with Asia in the south, Georgia, and to a lesser extent Armenia and Azerbaijan, are politically and culturally often associated with Europe; rivers in these countries are therefore included.

  5. What’s the world’s longest river? New expedition aims to ...

    www.aol.com/news/world-longest-river-expedition...

    The Nile in Africa is officially recognized as the world’s longest river, but now a new expedition is heading to South America with the aim of exploring a tributary of the Amazon which may lead ...

  6. List of longest undammed rivers - Wikipedia

    en.wikipedia.org/.../List_of_longest_undammed_rivers

    Europe: North America: Oceania: South America: ... Longest undammed river in the contiguous United States. Maya River: 1,053 km (654 mi) 171,000 km 2 (66,000 sq mi)

  7. List of rivers by discharge - Wikipedia

    en.wikipedia.org/wiki/List_of_rivers_by_discharge

    It can be thought of as a list of the biggest rivers on Earth, measured by a specific metric. For context, the volume of an Olympic-size swimming pool is 2,500 m 3 (88,000 cu ft). The average flow rate at the mouth of the Amazon is sufficient to fill more than 83 such pools each second.

  8. List of most-polluted rivers - Wikipedia

    en.wikipedia.org/wiki/List_of_most-polluted_rivers

    The longest free-flowing (undammed) river in the Eastern United States. [143] Named the 5th most polluted river in the United States by eco-activism groups, primarily in the Philadelphia/Chester region. [144] [145] 7–10 million pounds of toxic chemicals in the waterways mainly due to dumping by DuPont Chambers Works. [144] [145]

  9. List of drainage basins by area - Wikipedia

    en.wikipedia.org/wiki/List_of_drainage_basins_by...

    The list of drainage basins by area identifies basins (also known as "catchments" or, in North American usage, "watersheds"), sorted by area, which drain to oceans, mediterranean seas, rivers, lakes and other water bodies.