Questions tagged [dams]

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4 votes
1 answer
254 views

Why was the flooding in Derna, Libya so catastrophic?

I have watched storm Daniel on the internet while it was in Greece and what I saw was much heavier rain than what came down in Libya. But in Libya, property damage and death toll were much heavier, ...
1 vote
0 answers
25 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 ...
11 votes
2 answers
2k views

Was the filling of the Three Gorges Dam's impact on the Earth's rotation rate detectable?

I'm a big fan of Vsauce and the video How Earth Moves is just one example of science related to the Earth available there (there's plenty more). But the statement in this video starting at ...
5 votes
0 answers
232 views

Did the Three Gorges Dam shift the North Pole by 2 cm?

Numerous sources repeat that, apart from slowing down the rotation of the globe, the Three Gorges Dam caused the geographic pole to shift by 2 cm. For example: https://blog.prv-engineering.co.uk/...
3 votes
0 answers
100 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 ...
1 vote
3 answers
87 views

How to deal with a pond silting up [closed]

I live in a town that has a sizable pond that is dammed with a concrete overfall spillway. Decades ago the state demanded that the dam be installed to guarantee that the surface height of the pond ...
19 votes
2 answers
5k 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 ...
1 vote
0 answers
49 views

Flood and Statistics

A recent flood was due to combined effect of rainfall(precipitation) and reservoir storage. I have daily rainfall data and reservoir storage data. How can I correlate these two to get a statistical ...
3 votes
2 answers
244 views

Earthen dam with rock fill and clay core

I want to know how to determine water table height and phreatic line in earthen dam with rock fill and clay core.
9 votes
1 answer
134 views

Is there a quick way to roughly estimate how quickly a flood will move downstream?

At the time of this post, there was urgent danger of spillway failure at the Oroville Dam in California, with evacuations in place for hundreds of thousands, and even larger populations further ...
2 votes
1 answer
182 views

What current evidence is there for a Glacial Hudson River Valley deluge?

Some have studied the Lake Missoula glacial dam breaking West and having created the Coulees of Eastern Washington. Who's studied the glacial dam breaking South and having cleared the Hudson River ...