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  2. River - Wikipedia

    en.wikipedia.org/wiki/River

    The headwaters of a river are the smaller streams that feed a river, and make up the river's source. [4] These streams may be small and flow rapidly down the sides of mountains . [ 5 ] All of the land uphill of a river that feeds it with water in this way is in that river's drainage basin or watershed. [ 4 ]

  3. River source - Wikipedia

    en.wikipedia.org/wiki/River_source

    A stone near Crissolo, Italy, inscribed: Here is born the Po. The United States Geological Survey (USGS) states that a river's "length may be considered to be the distance from the mouth to the most distant headwater source (irrespective of stream name), or from the mouth to the headwaters of the stream commonly known as the source stream".

  4. Stream - Wikipedia

    en.wikipedia.org/wiki/Stream

    Freshwater's primary sources are precipitation and mountain snowmelt. However, rivers typically originate in the highlands, and are slowly created by the erosion of mountain snowmelt into lakes or rivers. Rivers usually flow from their source topographically, and erode as they pass until they reach the base stage of erosion.

  5. Origin of water on Earth - Wikipedia

    en.wikipedia.org/wiki/Origin_of_water_on_Earth

    An additional 5.0 × 10 20 kg of water is estimated to exist in ice, lakes, rivers, groundwater, and atmospheric water vapor. [20] A significant amount of water is also stored in Earth's crust, mantle, and core.

  6. Water cycle - Wikipedia

    en.wikipedia.org/wiki/Water_cycle

    All the rivers run into the sea, yet the sea is not full; unto the place from whence the rivers come, thither they return again" (Ecclesiastes 1:6-7). [33] Furthermore, it was also observed that when the clouds were full, they emptied rain on the earth (Ecclesiastes 11:3).

  7. Atmospheric river - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_river

    Atmospheric rivers have a central role in the global water cycle. On any given day, atmospheric rivers account for over 90% of the global meridional (north-south) water vapor transport, yet they cover less than 10% of any given extratropical line of latitude. [4] Atmospheric rivers are also known to contribute to about 22% of total global ...

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  9. Source of the Amazon River - Wikipedia

    en.wikipedia.org/wiki/Source_of_the_Amazon_River

    The Amazon River is the largest river in the world in terms of its flow rate. In addition, it is the second longest river, measuring 6,575 km (4,086 mi) [3] from its source to the mouth of the Atlantic Ocean [4] after the Nile River which is considered to be the longest river in the world (see Source of the Nile River), although there is some dispute.