I know absolutely nothing about land drainage and need some basic advice.
I have a gently sloping back garden (sloping towards the house) whish at one point has a low retaining wall, a 2' 6" pathway (mud at present, and then a long shed. The pathway gets very waterlogged in wet weather. There is a ditch not far away that I could drain into. What sort of drain could I lay under the mud pathway to take away the water - how deep would it need to be, etc. etc. Also, one area of the lawn gets very waterlogged, so it would make sense to drain that as well into the same line.
I think what I really need is a recommendation for a good book or website so I can work out the easiest way of dealing with this.
TIA
Keith