Questions tagged [rivers]

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Estimate the flow velocity of a river with satellite images

I'm looking for a more or less straightforward (and not very mathematical) way to roughly estimate the flow velocity of a river based on satellite imagery (e.g. Google Earth). In more detail: I would ...
4
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0answers
41 views

Dealing with uncertainty in source apportionment

I have a dataset of dissolved load (major and trace elements), the associated error is specified as <10% for all the cases, in the same way I have rock analysis (major and trace) with the same ...
3
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0answers
30 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 ...
3
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0answers
138 views

How does the estaurine turbidity maximum vary depending on the type of estuary?

An estuarine turbidity maximum (ETM) is the area of an estuary that has maximum values in suspended particles in the water column. My questions are What are the main characteristics of the ETM? How ...
3
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0answers
391 views

What is the biggest periodic river?

What is the biggest and longest periodic river in the world ? (river that runs dry on occasion and flows during a season of heavy rain)
2
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42 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, ...
2
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0answers
20 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 ...
2
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0answers
93 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 ...
2
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0answers
65 views

California length, source, and mouth of rivers

How can I find out / where can I find the length, "source" (beginning point), "mouth" (ending point) of the California portion of rivers? For example, it's easy to find the length, source, and mouth ...
2
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0answers
24 views

For how long have the great karst springs of the Aachtal been active?

Aachtal, along with Lonetal, is a valley in the Swabian Jura, Germany, and the site of many famous archaeological sites of the upper Pleistocene. It also hosts a series of very large karst springs (...
2
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0answers
307 views

What is difference between Riverbed conductance term and streambed leakance/retardation coefficient?

In literature some times to account for semi-pervious sediments at bottom of stream, streambed leakance also called retardation coefficient ($L$) is used. This is equal to the ratio of conductivity of ...
1
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0answers
17 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 ...
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0answers
21 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 ...
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39 views

Why Sutluj, Ravi and Beas rivers are called eastern rivers? Is it related to their geography?

Indus water treaty says eastern rivers are Indias and western river control are with Pakistan. All rivers origin from west of Tibet I think and flow from west to east but why this nomenclature of ...
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215 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 ...
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120 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.