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#498361 - 11/04/18 06:53 PM Ground water question
Medic828 Offline


Registered: 10/28/17
Posts: 7
Loc: Ky.
Ok this may be a stupid question but I have to ask if anyone else has ever thought about it or seen it. If someone has a ground water pond, by this I mean pond filling from ground water coming up into pond through the bottom, what would be the chances you could dig, lets say a 4' deep trench and put in a tile big enough to carry the ground water out from underneath the pond coming up and emptying out on the back side of the dam. Then constructing and compacting the bottom over the tile and not have the pond leak out to the tile.


Edited by Medic828 (11/04/18 06:53 PM)

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#498507 - 11/08/18 08:23 AM Re: Ground water question [Re: Medic828]
Dave Davidson1 Online   content
Moderator
Lunker

Registered: 01/04/06
Posts: 13660
Loc: Hurst & Bowie, Texas
To fill from the bottom, it seems that it would have to be somehow pressurized. Artesian, I guess. Not sure you could then cap it off.
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#498512 - 11/08/18 11:42 AM Re: Ground water question [Re: Medic828]
Quarter Acre Offline


Registered: 06/10/16
Posts: 872
Loc: West Central Missouri
Wouldn't evaporation be the next nemesis if you did not pump water in? If you did pump the water back in, then you would have created a shallow well water fed pond. Most ground water ponds are filled due to a wide ground water source, not necessarily a single point like a spring fed pond. At least that is the way I would differentiate the two. So, If I had a wide ground water source pond that I wanted to stop the leak-down...I would seal the bottom, forego the trench and tile and place a shallow well nearby and pump to fill the pond. So long as you keep the pond level higher than the ground water level you would not experience ground water pressure over that of the pond water pressure, hence no overcoming upward pressures at the bottom seal.

If you have a single point fed pond, then Dave makes the point that there would be some pressure to it and sealing it off could be futile. At this point, a tile system as you suggested would need to be explored along with a way to keep the pond full.
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#498546 - 11/08/18 08:48 PM Re: Ground water question [Re: Medic828]
Medic828 Offline


Registered: 10/28/17
Posts: 7
Loc: Ky.
I guess when I am saying ground water it would not be in reference to a constant state of water level. I'm describing ground water that is only present after a lot of rain fall that escapes to the surface after the ground is saturated. I'm not really sure if this is true ground water or as stated an artesian well sort of thing. Lot of limestone around here that forms wet weather springs when the rock is close to the surface.

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