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Starting a new pond - very sandy soil
I'm building a new pond / stream on a slope-to-level surface. The rise
is about 3 feet. All of this will sit behind a newly constructed retaining wall. The area for this is pretty much pure sand, so shifting soil is a problem. Just wondering if anyone has done this and what problems I might expect to come up against. |
#2
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Starting a new pond - very sandy soil
On 30 Jul, 12:43, TahoeKid wrote:
I'm building a new pond / stream on a slope-to-level surface. The rise is about 3 feet. All of this will sit behind a newly constructed retaining wall. The area for this is pretty much pure sand, so shifting soil is a problem. Just wondering if anyone has done this and what problems I might expect to come up against. Ponds and streams with lners are made every day in areas like lower alabama and florida in plain old loose shifty sand without any problems. Once its filled its pretty much there......I know of folks that made their hole in the ground roughly shaped to size and shape, mixed in bentonite (bought $7 a 100# bag, and dampen the sand. The bentonite makes the sand more moldable and sticks it together, then finish out shaping their pond and line it with liner and fill it.No big deal..........The water will help the piond hold its shape. No matter what kind of soil you have its all subject to shifting. I take it yuor going to use a liner, and your not talking a mud pond. Even so, mixing in the proper amount of bentonite (western "sodium" bentonite" ) with pure sand is more than capable of creating a water tight hole inthe ground that will work just fine for a pond.......At least with sandy soils, you have good drainage so you do not get a buildup of hydronic pressure behind retaining walls and liners etc. Just make sure your pond with a liner is filled before a major rain so pressure is equalized from inside the liner to the outside. If liner is in pond and not filled water intrusion into the hole will cause liner to fold in and poind walls to erode or wash out. Sandy soils certainly is not a problem. |
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