Water, water everywhere....
The 3 longest rivers in the world are (in order):
1. The Amazon
More water flows into the ocean from the Amazon River than the combined output of the Mississippi, the Nile, and the Yangtze rivers. The Amazon River is believed to be the world's longest river at 4,225.3 miles. But measuring rivers is fraught with variables such as droughts, floods, and soil deposit rates (annually changing the precise "mouths" of rivers). Of all the river waters flowing into the world’s oceans, one fifth of that volume of water comes from the Amazon. The average amount of water discharged form the mouth of the Amazon River is estimated at 180,000 cubic meters per second. That equals a whopping 47.5 million gallons per second.2. The Nile
The Nile River contends with the Amazon for 1st position of the longest river in the world at roughly at 4,132 miles long. Its river basin encompasses NINE countries. The Nile's average water output per second is estimated at 1,584 cubic meters per second, or 400,000 gallons per second.3. The Yangtze (actually, the Changjiang, also known as the Yellow River)
Changjiang in Chinese means Long River. It's the longest river in China estimated at 3,915 miles, and the third longest in the world after the Nile and the Amazon. The river flows through China and empties into the East China Sea. The Yangtze River's average water output per second is estimated at 35,000 cubic meters per second, or roughly 9.2 million gallons per second.And...
4. The Mississippi
The Mississippi Rive is the fourth longest river in the world at 3896 miles, rivaling the Yangtze for third longest river by less than a hundred miles. Again river lengths are estimates and are variable. The word Mississippi is derived from the old Ojibwa (indian) word misi-ziibi, meaning Great River. It is the longest river in the US, and part of the longest river SYSTEM in North America, joined with the Jefferson and Missouri Rivers. However, it is only the tenth largest river system in terms of discharge, measured at roughly 17,545 cubic meters per second, or 4.5 million gallons of water per second.So, doesn't it beg of us the question--with all that water flowing into the oceans every second, how come sea levels around the world don't rise up and overtake coastal cities? What then is maintaining our current apparent hydrostatic/geostatic equilibrium?
Just a thought....
--Elizabeth Ann
Sources of info:
http://www.google.com/
http://usgs.gov/
http://gcmd.nasa.gov/
http://news.bbc.co.uk/2/hi/americas/6759291.stm
http://en.wikipedia.org/wiki/List_of_rivers_by_average_discharge


