Sloped Garden Drainage
sean_huggan
Posts: 6
Hello all,
I've got a two tier garden with a sort of V shaped slope to the right of my garden with the point at the bottom then widening up that leads to a flat patch at the top, this flat part is kept there by a 7ft tall concrete wall, either side of the V slope is concrete which keeps the slope in place ,my plan is to build a retaining wall to section off this flat part from the slope then to put steps in the centre of the slope using the retaining wall as the top and then to work my way down. The reason i want to put a retaining wall at the top is to keep all the soil in one place and to stop it falling down the side of the slope which is what is currently happening when it rains. Once I have blocked off this area no longer letting the water flow down the side am I at risk of flooding and is there a way to add any sort of drainage to the slope, the bottom of the slope leads to gravel with no drainage grates near by, the flat part of the garden is raised by about 7 foot held by a concrete wall so even with it blocked off would the water still drain anyway?
Thanks in advance and any questions go ahead it's hard to describe my awful shaped garden.
Regards
Sean
Posts
Old picture but the water currently drains to the left below the wood fence and I want to block off across just where the light is hitting to the top left (trust me it is flat past that, bad picture) then stairs down the middle
I'm not sure I fully understand the scenario Sean but the retaining wall should have shingle at the bottom and weep holes in the brickwork (if you are building using bricks / blocks, but the concept applies to whatever material you chose). This would mean the top flat section would be able to drain as it does now by working its way down through the gravel, through the weep holes then onwards down the slope. .
Sorry it was hard to describe with the layout of the garden, the wall you see in the picture to the left runs round the whole garden keeping the top tier there, are you saying that this wall should have drainage itself at the bottom? So blocking off a part of the garden by the slope should be no problem as water is already draining from some place else? Thank you for replying it is badly worded and hard to describe without having someone in the garden with you to explain, it's much appreciated
The wall on the left looks like rendered blockwork but I don't see any obvious signs of drainage (weep holes for example) so this is probably why the water currently drains out further down at the bottom of the wooden fence. That's if I understand you correctly. I still cant quite picture the location of your proposed new retaining wall but, on the assumption it is going to affect the current drainage 'flow', if you build it so that water can pass through it then you should be ok.