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83 votes

Are there any saltwater rivers on Earth?

The water in any river draining the sea is infinitely recycle-able (from rain replenishment), whereas the salt from any terrestrial source is not. So salty rivers, if any, won't exist permanently. ...
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45 votes

Is there any river that does not discharge into larger body of water?

The Okavango River is a good example of this. It drains into a swampy delta in the middle of the Kalahari desert: The Okavango Delta, CC BY Justin Hall.
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35 votes

Is there any river that does not discharge into larger body of water?

The Colorado River frequently fails to reach the Gulf of California, mostly due to diversion to agricultural and metropolitan uses upstream. This National Geographic post from 2014 elaborates on the ...
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34 votes

Are there any saltwater rivers on Earth?

The already accepted answer is already covering the "real" answer as far as I'm concerned, and while you won't find many (any?) saline rivers in the traditional sense, we do have underwater &...
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28 votes

Are there any saltwater rivers on Earth?

The Pecos River in Texas, USA may arguably fit the description of a "saltwater river". A point of argument is what is considered to be "saltwater". For comparison, here are some ...
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28 votes
Accepted

Where do rivers like the Rio de la Plata end and the ocean begin?

In the case of Río de la Plata, part of it is history and politics, and part of it is oceanography. Most of Argentina and Uruguay considers Río de la Plata as a river (thus, the name, río) and as ...
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28 votes

Is there any river that does not discharge into larger body of water?

The concepts you are looking for are two categories of drainage basins, endhoreic basins and cryptorheic basins. Endhoreic basins are drainage basins that do not drain to the oceans, either above ...
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  • 20.4k
26 votes

Where does the Amazon River really begin?

From an Earth Science standpoint, it's meaningless to ask about the "source" of a river in this way. The "source" of a river is the rainfall within its drainage basin, which percolates down into ...
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  • 3,133
26 votes

Is there any river that does not discharge into larger body of water?

There are rivers that don't flow into seas or lakes if you consider influent rivers. Which are rivers that loose water to the ground (seeps into aquifers). For example "big lost river" of ...
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25 votes
Accepted

Is it possible for rivers to freeze completely and stop flowing?

I am interpreting your question as referring to rivers with flowing water freezing as as opposed to glaciers, which are already frozen. Under current climatic conditions, small rivers can freeze ...
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24 votes

Are there any saltwater rivers on Earth?

Water from the Caspian sea, with a salinity of 1.2%, is constantly flowing into Garabogazköl, where the water eventually evaporates and leaves the salt behind. Of course, the situation is not ...
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19 votes
Accepted

Do dams reduce the flow of river downstream?

Once a dam has been constructed in a river, the natural flow of water will be disrupted. You correctly state that initially there will be a period required for the dam to fill. Until then, little of ...
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  • 21.8k
18 votes

Are there any saltwater rivers on Earth?

Here in New York City we have a salt "river". It is called the "East River" and it separates part of Long Island (Brooklyn and Queens) from the island of Manhattan and the mainland (The Bronx). ...
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17 votes

How and why do these tree-like river structures form?

The river isn't splitting. The picture shows a number of dendritic drainage channels flowing into a larger river/stream. They are the most common form of topographical draining system. They develop in ...
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  • 21.8k
16 votes
Accepted

How do long rivers exist?

Well, I can only agree that it is indeed amazing and it doesn't get less amazing when some geology, hydrology and geomorphology is added to the the amazement. All precipitation that falls on land ...
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  • 5,896
14 votes

Could a massive flood have formed the Grand Canyon?

tl;dr: no. Long answer: First of all, like mentioned by others in the comments, you would need some physical mechanism to take a whole lot of water, evaporate it, and drop it at once at a place ...
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  • 22.2k
14 votes

Are there any saltwater rivers on Earth?

I live near a river named Salz, flowing both warm and salty on the north slope of the Pyrenees south of Carcassonne. In historical times it was boiled dry for salt. See Les Sources de Salz
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14 votes

Do dams reduce the flow of river downstream?

You're correct that simply putting a dam in place, once its lake is filled, doesn't change the average flow downstream by more than a few percent (those few percent can be lost to increased ...
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13 votes

Rocks sparking under water

Is this possible? Definitely. I know you can get sparks from some rocks and minerals - but granite boulders [?] Yep. Quartz is one of those minerals that "sparks". It is piezoelectric, and ...
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  • 22.2k
12 votes

How do long rivers exist?

I will attempt at rephrasing your interesting question after these considerations: At the continental scale, flowing water has no significant inertia, so water flows following the maximum slope. A ...
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  • 1,663
12 votes
Accepted

Undersea riverbeds?

There are two features that need to be distinguish here: one is the Hudson Submarine Canyon on the continental slope, which starts at around 100 m and connects to the deep basin; and the Hudson Shelf ...
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  • 14.7k
12 votes

Are there any saltwater rivers on Earth?

There are salt water rivers in different places of the world where ground water flows in contact with salt layers. There is a river in Catalonia named Ribera Salada (meaning salty river in Catalan). ...
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11 votes

Is it possible for rivers to freeze completely and stop flowing?

In a way, glaciers are just like frozen rivers. A good start on that topic comes from USGS. Ice (whether in a frozen river or in a glacier) is still a fluid and thus is always moving because of its ...
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  • 14.7k
11 votes

The river or the hills; which came first?

This is a kind of chicken or egg question, since there was never really a point at which there was no river flowing, or no hills to flow around. My question is whether the hills preexisted the ...
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11 votes
Accepted

How do rivers last so long in dry weather?

The rivers are generally fed by water that percolated into the ground, it takes longer for that water to work its way down to the stream so the streams and rivers keep flowing long after the initial ...
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  • 6,558
11 votes
Accepted

Is there a special name for along-course elevation profiles of rivers, and where you can you find them?

I guess there are multiple names, but I know it as the river's "long profile", and it is used in academic papers (one example here and a search in google scholar here). But you can find similar ...
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  • 17.1k
10 votes

Do rivers/creeks flow underground when they dry up at the surface?

Water in liquid state always takes the fastest route to lower altitude. All rainwater would flow vertically down to the groundwater surface if not the permeability was limited by the material ...
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  • 5,896
10 votes
Accepted

How are minor tributaries of a river determined?

This is a question of topology. There are three major attempts to order streams from small to larger. The first was established by Horton (1941) who established the concept of drainage composition. ...
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10 votes

Are there any saltwater rivers on Earth?

Here in Western Australia we have many salt water streams running through farmland affected by dry land salinity. It's a huge problem where land cleared for agriculture has experienced rising water ...
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