Drainage problems

willow10_10 · Post: # 16200Post **willow10_10** Fri Jan 19, 2007 10:25 pm

Hi,

I hope someone can help with this problem. There is a very large garden area that is badly flooded when there is lots of rain. The problem is not only is it on clay and that it is the lowest point within about half a mile, but there is also a large pond next to it, outside the boundry. When it rains a lot, the water level rises and floods the garden.

Any suggestions

Thanks,

Mark

mark_shaz@hotmail.com

Sat Jan 20, 2007 2:23 pm

could you not raise the level of your garden, and use land drains so that water goes into the pond?
how high is your DPC in relation to the garden/pond??
a pic would help
cheers LLL

willow10_10 · Post: # 16219Post **willow10_10** Sun Jan 21, 2007 2:54 pm

The garden is way to big to be raised, and unrealistic on this job. I cant supply a picture.
The garden starts at 150mm below dpc.

Any other suggestions?

Thanks Mark

flowjoe · Post: # 16220Post **flowjoe** Sun Jan 21, 2007 3:17 pm

Is this a new problem ? if so the existing land drains or possibly the overflow from the pond may be silted or blocked.

If not then you will have to find a way of draining the area to a suitable outfall point using a land drainage system and pumped or gravity fed outlet.

Get a specialist in to investigate any existing system and or put a scheme together for drainage the land, this may be a bit more than a DIY type job.

willow10_10 · Post: # 16221Post **willow10_10** Sun Jan 21, 2007 4:31 pm

Thanks for your help

Sun Jan 21, 2007 7:58 pm

The garden is way to big to be raised, and unrealistic on this job

there is a lack of detail here mate
i see on your profile you are in milton keynes
is the house new-ish build?
have you considered a bore hole
how big exactly is the garden?
why is it unrealistic to raise the garden?
stone/mud/topsoil are relatively cheap
more detail please
regards LLL

willow10_10 · Post: # 16232Post **willow10_10** Sun Jan 21, 2007 8:32 pm

The building is fairly new. The area is approximately 1500 square metres. Has had a lot of landscaping work already done. So would cost so much to lift the garden and get the garden landscaped again.

flowjoe · Post: # 16233Post **flowjoe** Sun Jan 21, 2007 9:57 pm

This is so common, developers build on unsuitable land due to modern piling/building techniques, and then the home owner has to deal with the ground water problems later on.

I worked on a site recently when an old guy (80+) walked past and told me how he used to swim at the same spot as a kid during certain times of the year, because it was a flood plain.

Forget your land searches, you can not beat local knowledge.

Having said that willow_10_10 we have not yet been beaten and there is always an answer, it just costs sometimes