gcol, I had assumed he lived on a hill I guess I'm spoilt by having at least one side of both my ponds above ground level. I suppose at worse the OP could put the pipe down an inspection chamber/gulley.
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.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local