DIY groundwater pond


Joined
Apr 6, 2021
Messages
1
Reaction score
0
Country
United Kingdom
Hello, I’m brand new to pond creation. We’ve just moved to a 8acre former farm in East Sussex and have several ponds already as well as two brook/streams. We have an area alongside one of the brooks which is a depression and is waterlogged all year round with groundwater and some surface run off from the steep field around it (not fed by stream at all). I’ve started digging down to explore a few test holes and there is a foot of top soil and then grey clay. Test holes are currently holding water but expecting them to dip or perhaps dry totally in summer. In which case we may use the summer to dig the full pond and puddle the clay and seal the pond. Likely the long pond will either be around 8 metre long x 2-4 metre wide or a series of smaller ponds adjoined. Has anyone dug a groundwater pond? Would love to exchange ideas and hear how they have fared. Particularly interested to know if puddled clay line ponds can fill with groundwater if the clay acts as a seal.
 

Attachments

Ad

Advertisements

Mmathis

TurtleMommy
Joined
Apr 28, 2011
Messages
11,607
Reaction score
6,441
Location
NW Louisiana -- zone 8b
Hardiness Zone
8b
Country
United States
Hello and welcome! Even if you decide not to turn it into an official pond, that looks like a lovely place for a rain garden!
 

addy1

water gardener / gold fish and shubunkins
Moderator
Joined
Jun 23, 2010
Messages
39,765
Reaction score
23,912
Location
Frederick, Maryland
Showcase(s):
1
Hardiness Zone
6b
Country
United States
Welcome I have never dug a pond and used clay to seal it. Can't help much.
 
Ad

Advertisements

Joined
Dec 16, 2017
Messages
5,012
Reaction score
3,853
Location
Ct
Hardiness Zone
6b
Country
United States
Not all clay areas are created equal in retaining water if your test pits hold tge water level constant for a week your off to a good start. Run off from surrounding areas is not ideal as cattle dung or fertilizers can spike your waterside for algae blooms that will never go away.
If the water shows signs of dropping you can mix bentonite in with the clay . The percentage varies on your type of clay. I would bet there are forums out there did a test pit say 4x4 and 4 foot deep will equal x and if your soil leaches in x add x . It's out there I would not bet against it.

A roots tiller is needed to mix the bentonite in . Or a farm tiller
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Top