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#81025 09/20/02 03:24 PM
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Last issue of Smithsonian Magazine has story on Venice and mentions how pumping water from under the city has caused it to sink more in past few years than in the 50 years before. They stopped, needless to say and are now trying to reverse the damage they caused. Magnificent photos with the article.
Mayhap you could find the article at smithsonian.com


#81026 09/20/02 03:43 PM
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and sometimes, the water table is above the natural ground level-- and you get a wetland..

see what the EPA has to say about them..

i'll continue to look, because there also a page on the path of surface water to the water table..(and wet lands are a sometimes intermediary stop)
http://www.epa.gov/OWOW/wetlands/index.html

and here is a ground water primer, from Purdue Unv., showing the water table, capilary fring, etc..
http://www.epa.gov/seahome/groundwater/src/ground.htm
(wait, i didn't check, is this the same one Milum posted?)


#81027 09/20/02 04:20 PM
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of troy,

milum didn't post a link; dxb and dody did, however, and one of yours is fantastic--the one with all the terms and definitions. Thanks for providing it.


#81028 09/21/02 12:46 PM
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old hand
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milum didn't post a link

With good reason. I know more about water tables than the smartest of your links. For most of my adult life I've lusted after water tables as W.C. Fields has lusted after Chickadees and Mae West. I eat, sleep, and drink water tables. With good reason; water tables control the development and enlargement of caves. Go ahead, I dare you, ask me a question - No! - better still, I'll tell you stuff without you even asking...

In a minute...






#81029 09/21/02 02:04 PM
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OK, Master of Water Tables. Here's a question for you with, first, some background.

Let's take a very well-established water table just beneath the beating heart of the capillary level in the zone of aeration. Now something happens to cause that water table to drop--let's say bodies of water that fed the water table have been dammed up so that the lower areas no longer receive the feeding of water they once enjoyed. So the water tables below the dam drop. And they drop a lot.

What happens to that capillary level that was once kissing its sweet lips against the water table? Do the capillaries dry up? And what about the area of soil that is now between the now lonely capillaries and the dropped water table? What is this newly created area called?

That's what I'd like to know.

Singing the lament for deserted capillaries,
WordWaterTable


#81030 09/21/02 02:22 PM
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Dear WW: In addition to industries lowering water tables, enormous areas are being
covered with asphalt and cement to make shopping plazas, so rain water just runs off,
instead of helping raise water table.


#81031 09/21/02 02:55 PM
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Yes, wwh. Many things can adversely affect the geology of an area when man steps in and builds what he will.

Take China for instance and the huge dam that's being built.

I read in a book recently that when dams are put it, the weight of the water in the dam, if large enough, can cause earthquakes. No joke. Within the tectonic plate itself, the weight of that extra water can cause a quake. I would think China would be most especially susceptible to earthquakes--and this huge dam with its enormous amount of extra water weight could cause one of these quakes. Not to even mention what such a dam will do to the water tables there.

There's a specific term for earthquakes that occur within the tectonic plate--but I've forgotten the term. Inter-tectonic quake...or something like that. Maybe someone here knows the term.




#81032 09/21/02 03:38 PM
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If only we could distribute it more equably
If one distributes water "equably", wwh, it is likely that it will also be distributed "equitably". And that would be an "aquable" result, wouldn't you say?


#81033 09/21/02 04:22 PM
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Dear wordminstrel: a bow to you for calling attention to fact that my word choice
was not the best. Equitably would mean fairly, justly - which would be important.
I was thinking more of the cases where some communities get far more than they
need because of geography.


#81034 09/21/02 05:07 PM
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I was thinking more of the cases where some communities get far more than they
need because of geography

I would not presume to "call attention" to your usage, wwh, particularly having regard to the fact that your usage was perfectly precise. I was simply reflecting on the fact that water which is not distributed equably in populated regions has a meaning to those suffering a deficit which is not immediately obvious to those enjoying a surplus.


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