On 08/12/16 22:18, Andrew Mawson wrote:
"Tim Watts" wrote in message
...

On 08/12/16 19:23, Chris Hogg wrote:
On Thu, 8 Dec 2016 18:56:03 +0000, Tim Watts
wrote:

On 08/12/16 18:40, Chris Hogg wrote:

You may find that the auger holes just act as sumps and fill with
water no matter what you put in them, sand, gravel, whatever. If you
drill them down through the clayey layer to something more porous
below, then they may drain OK, but I'm not sure there is such a layer
from your description.

I've always wondered - how thick is a the clay layer likely to be
(feet,
meters, 10's metres?)

Where are you? Some parts of the country, especially in the east, the
clay can be many hundreds of feet thick, although around Cambridge the
soil can be quite sandy, I believe.


Kent/East Sussex border...


Tim, if you search for bore hole data near you, you will get a full
written description of the sections of the ground through which they
have bored:

http://www.bgs.ac.uk/data/boreholescans/home.html


Andrew



Bugger me - that is a resource I didn't know existed - thanks Andrew.

Here's one just up the road:

http://scans.bgs.ac.uk/sobi_scans/bo.../12589683.html

1.1m clay then sandstone.

Sounds like hand augering time