Questions tagged [rivers]

This Tag is for Questions about Rivers and why/how they operate in a certain way, or if the Question talks about a subject or point that revolves around Rivers, streams and et cetera.

Filter by
Sorted by
Tagged with
4 votes
0 answers
185 views

Ice on rocks at bottom of flowing river

I live near a river in the Pacific NW (USA) and it has been cold (low teens °F, around -10°C) for over a week. The river is about 5-6 feet (1.5–1.8 metre) deep and moving fast enough so the river at ...
Stevan V. Saban's user avatar
11 votes
1 answer
3k views

Why are these U-shaped bodies of water frequent near Kura river?

I was looking at the Kura river in Google Maps satellite mode and I saw these U-shaped bodies of water: There are other U-shaped bodies of water too: 40.615881° N, 47.205031° E 40.101139° N, 47....
Snack Exchange's user avatar
0 votes
0 answers
18 views

What is the sphericity and roundness of Saône River Sand

I'm interested in knowing about Saône River sand found at the river's headwater just outside the city of Dijon, France, as seen in the image below, Saône highlighted red, Dijon highlighted yellow. (...
Armadillo's user avatar
  • 581
2 votes
0 answers
21 views

Seeking guidance on predicting salinity of River network with incomplete data

So I am working with the USGS data on salinity of various River reaches in the United States and not every reach mapped has been tested. Is there an accepted model for inferring the salinity of ...
Wesley Young's user avatar
5 votes
1 answer
413 views

Classification of river

I would like to know how can we determine if the river is wide. Is there any classification or consideration that can be done based on the width, depth, and length of the river?
fatihah balqis's user avatar
1 vote
1 answer
420 views

Can gold be found in middle range of the Himalayas like in Himachal Pradesh mountains or rivers above 3500 m that come directly from the glaciers? [duplicate]

Can gold be found in the middle range of the Himalayas like in the Himachal Pradesh mountains or rivers above 3500 metres that come directly from the glaciers? Such as in the river banks of the Satluj ...
himalayan soul's user avatar
3 votes
1 answer
122 views

Oxbow lake, but not completely cut off from the river

When a meander of a river is completely cut off from the river, yet still contains water, it is called an oxbow lake. What if the meander is cut off only at the "exit", but the "...
jb_314's user avatar
  • 133
3 votes
0 answers
168 views

Causes of high calcium levels in sandy alluvial soils

When soil calcium is high: High levels of soil calcium may be expected when there is substantial calcium carbonate bedrock from which the soil has weathered. Calcium levels can be high in agricultural ...
theforestecologist's user avatar
3 votes
0 answers
49 views

Where does the water in the Euphrates and Tigras rivers come from?

The research I've done says that the rivers are fed by alpine snow, lakes and rains in the Taurus mountains but I'm specifically interested in whether the rains/snows and the water that feeds the ...
Wally's user avatar
  • 31
3 votes
0 answers
59 views

Where's the Colorado River water going between Glen Canyon and Lake Mead?

While looking through the "minimum inflow" 24-month projection for the Colorado River basin, I noticed something odd for the Lake Mead chart: an expected negative inflow from side streams in ...
Mark's user avatar
  • 1,261
1 vote
0 answers
28 views

How does the water passing Dike Kokaral compare to the discharge of the Syr Darya river before its water flow was improved?

According to Wikipedia, the North Aral Sea is being partially restored, by restoring some of the Syr Darya river's flow (which was diverted by the Soviet Union for irrigation), and by building Dike ...
Speedphoenix's user avatar
2 votes
1 answer
78 views

How does dredging help the rivers that have gone dry?

How does dredging help the rivers that have gone dry? If you dig deeper, that small, and fixed, amount of water is just going to go lower, isn't it? That just what my layman's logic says, at least. ...
Sergey Zolotarev's user avatar
5 votes
0 answers
76 views

Surprisingly deep rivers

I just read that the Congo River is >200m (650 ft) deep - I had no idea that this is even remotely possible! Q1: What are the processes leading to a river being this deep? Q2: By which method is ...
NotTheMoney's user avatar
2 votes
0 answers
69 views

Noise pollution: Highway vs river

Recently, I noticed that a highway and a river sound fairly similar. This got me thinking that they say noise pollution from highways causes stress even if you don't really notice it. So, the question ...
Emiel Lanckriet's user avatar
2 votes
0 answers
42 views

Is a Gumpe the same as a plunge pool or stream pool?

In river morphology, a plunge pool is a (small) lake formed at the bottom of a waterfall. In German, there exists the word Gumpe, apparently from Bavarian. From the German language Wikipedia, a Gumpe ...
gerrit's user avatar
  • 11.7k
1 vote
1 answer
122 views

Would the Climate change in Southern Africa by Filling Lake Makgadikgadi Evaporation Pans with water from the Zambezi and Chobe Rivers?

I have Macro question, and have enquired and discussed this topic with numerous people. My background is more in Economics and Finance, and read a very interesting article if I am not mistaken 10-15 ...
Charl Yazbek's user avatar
6 votes
2 answers
139 views

Can "meanders in meanders" form naturally?

I recently rafted the San Juan river in Southern Utah, which flows into the Lake Powell reservoir. When the water levels in Lake Powell were very high, it extended far upstream into the San Juan ...
Connor Garcia's user avatar
3 votes
0 answers
288 views

Why are the Himalayan rivers highly tortuous in the mountain reaches?

"In the Himalayan reaches, the course of these rivers is highly tortuous, but over the Plains they display a strong meandering tendency and shift their courses frequently." This is what I ...
Sasikuttan's user avatar
3 votes
1 answer
181 views

What can make a river end just before an ocean?

In Mallorca, Spain, there is a river called Torrent Son Bauló. As visible in the picture, it ends just before the sea, seemingly blocked by the beach. What can be the cause of that? My guess is that ...
David Hás's user avatar
3 votes
1 answer
491 views

How deep is the water beneath a waterfall?

I always wondered about this, how deep is the water beneath a water fall? I would suspect erosion to erode even rock over time. Are there some visual clues to estimate the water depth? Or is the only ...
CuriousIndeed's user avatar
5 votes
0 answers
55 views

Salinity balance in the oceans, is it increasing over time? [duplicate]

My 13 yr old kid is studying the water cycle and has raised me some question I don't have answers to regarding how the salinity levels of the oceans are kept constant (over very long period of time) ...
Alexandre Dumont's user avatar
4 votes
1 answer
512 views

What are these 'spine' land features on the banks of the Oder river?

Looking around on Google Maps, one can zoom in on the banks of the Oder river between Germany and Poland and find quite an extensive series of curious repeating land features along much of the river ...
user91231312's user avatar
4 votes
1 answer
54 views

Is initial stream formation in a drainage basin random?

It's known that stream orders are highly regular: Horton showed that stream order is related to number of streams, channel length, and drainage area by simple geometric relationships; that is, stream ...
Slate's user avatar
  • 143
4 votes
0 answers
43 views

Why is the delta part of Jezero crater higher than the surroundings?

In images of Jezero crater on Mars, it looks like the delta fan is higher than the surrounding crater floor. This indeed seems to be the case with closer-up images from the Perseverance rover taken ...
usernumber's user avatar
1 vote
0 answers
38 views

List of estuary/mouth size for European rivers

I am looking for a list that contains either the size of estuaries or river mouths of European rivers. Is there such a list available somewhere? I have been looking for a while but only found lists ...
ATYslh's user avatar
  • 11
1 vote
2 answers
111 views

What term to geologists use to refer to several rivers constrained to a particular area?

I am studying some maps of prehistoric cultures in North America, noting the relationship between their villages and the rivers they are near. I notice each civilization seems grouped around rivers ...
Village's user avatar
  • 261
4 votes
1 answer
631 views

When does a stream become a river?

Does a stream require a certain width or volume before it can be classified as a river, and if so, what is it?
Jonathan's user avatar
  • 121
3 votes
2 answers
1k views

Calculating Stream Flow from Rainfall Data

I have been given the following data: Month N T (degrees C) Monthly Rainfall (mm) 1 0.68 1.12 391.1 2 0.82 1.40 163.1 3 0.98 3.04 296.5 4 1.15 4.77 157.7 The list goes on. From this and using ...
Edward's user avatar
  • 55
3 votes
1 answer
646 views

How to properly distinguish a transversal valley from a longitudinal valley?

I'm confused about how to distinguish the two. Prior to making this question. I've read the wikipedia entry on the subject but it mentions that for example a transverse valley makes 90 degrees with ...
Chris Steinbeck Bell's user avatar
1 vote
1 answer
952 views

What effect does river channelization have on the surrounding water table?

Correct me if I'm wrong, but most rivers lie where the water table protrudes into open air. In other words, the water table level is exactly the same as the river water level. (Wikipedia has a good ...
DrZ214's user avatar
  • 2,175
3 votes
0 answers
224 views

As small streams freeze solid, how can big rivers continue to carry water?

In areas of very cold temperatures (-20°C and below), it is not uncommon for small streams to freeze completely (as in, from top to bottom) and larger rivers to develop thick ice covers. However, ...
Callid's user avatar
  • 31
3 votes
0 answers
43 views

How to map a comID to latitude/longitude?

I'm working with a dataset of river flow from NOAA and the locations of the measurements are indicated with a comID. From what I gathered these comIDs are rooted from a dataset called NHD, although I ...
schapke's user avatar
  • 131
2 votes
1 answer
59 views

Are Fluvial and River Terraces the same?

I study about fluvial terraces. However, resources related to this topic are limited. When I searched fluvial terraces in geomorphology books, I cannot find anything, but I find river terraces. My ...
Sun's user avatar
  • 23
1 vote
3 answers
163 views

Why would channelizing a river reduce any nearby wetlands?

Channelization is when you straighten a river to make a shorter path from A to B. This makes the water flow faster, since the path is shorter but the volumetric flow rate of water must be the same (...
DrZ214's user avatar
  • 2,175
1 vote
0 answers
1k views

How many years does it take for rivers to form?

I've looked this up as best as I could and couldn't find a clear answer. I've seen for example articles on the age of several rivers as being the oldest ones, but nothing regarding the opposite. Could ...
Bawddor's user avatar
  • 11
3 votes
1 answer
396 views

Calculation of river width in relation to contributing area

I'm looking for a mathematical method to estimate the river width based on the basic topographic information of the specific sections of stream under consideration. Is there a formula to estimate the ...
Nemesi's user avatar
  • 1,268
35 votes
9 answers
12k views

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

Do you know any example of a river that does not flow into sea or lake? For example, if water rises from the underground spring and forms a river but water vaporises in hot climate before it reaches ...
Hannelore Schmette's user avatar
1 vote
0 answers
151 views

Which is the longest River in Germany and Russia?

Danube is 2850 km long and yet Rhine (1233 km) is considered the longest River in Germany. Likewise,the confusion between Yenisei and Volga in Russia.
Harveen Bhatia's user avatar
6 votes
1 answer
165 views

Has a scientific consensus been reached concerning the formation of the Grand Canyon?

new student of Oceanography here! I'm studying Earth Science right now, and I found conflicting reporting re: the formation of the Grand Canyon; whether it was formed singularly by the Colorado ...
DanielC's user avatar
  • 61
3 votes
0 answers
101 views

Modeling the total water inflow across multiple reservoirs

I'm new to hydrology and I have a question regarding the modeling of multiple reservoirs. I need to estimate the total water inflow to multiple reservoirs that will be observed tomorrow, conditional ...
Andrew's user avatar
  • 81
8 votes
1 answer
424 views

What are these river/canyon-like carvings in the ocean?

Browsing around Google Maps, I came across this off the south-west coast of Ireland It looks very consistent with the shape rivers and their tributaries might make, but it has me puzzled since it's ...
komodosp's user avatar
  • 255
1 vote
1 answer
176 views

What is the origin of the River Citarum on Java, Indonesia?

The Citarum river seems to pass through Bandung. The Cikapundung River seems to empty into the Citarum, but this means Citarum starts somewhere else, right? I tried to follow it in a map. It seems to ...
Martin Thoma's user avatar
7 votes
1 answer
153 views

Tidal flow in an estuary

I am working on a project. Where this bacteria has been deposited at a port in the Humber Estuary. Where it has been deposited has been marked in red. I am trying to work out the limits of where this ...
00100's user avatar
  • 73
1 vote
1 answer
52 views

Natural Raw Water [closed]

I have been drinking natural unfiltered raw water straight from rivers, streams, springs and ponds and I haven’t ever gotten sick from it. I strongly believe and know it in my heart that water from ...
Ryan Amalfitano's user avatar
19 votes
2 answers
6k views

Do dams reduce the flow of river downstream?

There is a conflict between Egypt and Ethiopia, because the latter wants to build a dam on the Nile river. Citing this article: [Egypt] fears the Nile dam will reduce its share of the river and ...
Martin Drozdik's user avatar
1 vote
0 answers
30 views

Relationship between sediment concentration of flow and erosion - streampower equation

I am trying to understand how the sediment concentration of a flow affects erosion. I stumbled across this paper by Bagnold (1968) today that uses a form for the stream power equation that I had not ...
Esme_'s user avatar
  • 131
7 votes
2 answers
1k views

Could the Grand Canyon be flooded by the ocean if it got deep enough?

The Colorado River has been carving the Grand Canyon for a few million years now, such that the canyon floor is around 6000 feet lower in elevation than the surrounding area, at about 2400 feet above ...
Jon's user avatar
  • 73
5 votes
1 answer
83 views

How can flood inundation vary at the same river stage?

I've always thought that river flooding would always be the same at the same river stage. For example, if the river stage is at 20' flooding at location "x" would always be at the same depth. ...
user avatar
3 votes
1 answer
441 views

What is the purpose of analyzing the bed-load of a river?

A group of students and I have gone to a field trip where we performed tasks like: measuring the velocity of the river flow, finding the width and depth to produce a cross section along with valley ...
user15104's user avatar
1 vote
1 answer
280 views

What is cluster situation with respect to sand mining?

Guideline on handling cluster issues : The original Environmental Impact Assessment ( EIA ) notification does not provide for the procedure to handle cluster situation, which has been proposed in ...
Noeshel 's user avatar