Garden drainage

3 May 2021
Reaction score
United Kingdom
Hello. I installed a land drain (perforated pipe in pea gravel trench) 3 years ago which runs down one side of the garden towards the house and into a surface water drain. To be honest it didn't seem to work very well as the lawn was always waterlogged.

I am now building a walled patio area which required cutting the ground and land drain and re-routing behind the wall. While the trench was exposed, I noticed that there is no water coming through the perforated pipe but plenty coming through the pea gravel beneath the pipe.

I have attached a sketch.

First of all, is this unusual? And secondly, what is the best way to ensure all this water is captured and transferred to the surface water drain by the house?

Any advice greatly appreciated.


  • Drainage layout.pdf
    398.6 KB · Views: 142
Sponsored Links

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local