Build a soakway
The first thing that you will want to do is to build a soakway that will collect all the water for the drainage system. This soakway should be built somewhere that is low and near the edge of your yard or garden. You will want to use the backhoe to make the soakway 6 feet wide and 6 feet deep. If you do not want to use the backhoe yourself, hire a professional to do it for you
Create pooling area
Once you have created your soakway, you should dig a pooling area using the shovel or backhoe. You will want to connect this pooling area to the soakway to ensure proper drainage to areas that usually get soaked. The pooling ditch should be around 15 inches deep and 6 inches wide. It is very important to make sure that the ditch slopes downward at the proper angle. Usually you can use 1 cm per meter of the length as a guideline for the slope.
Layer rocks in soakway
Make sure to place the large rocks and stones 5 feet deep in the soakway. After you have placed the large rocks, make a layer of smaller stones and gravel on top. It is best to keep this top layer around 6 inches deep.
Once you have completed layering the large and small rocks in the soakway, you can go ahead to place the drainage pipes. Ensure that each pipe is properly connected to avoid any possible leaks. You can use the shovel to completely cover the pipes with soil. Leave an area around 1 to 2 feet uncovered to help with drainage.
Fix problem areas
Identify the various problem areas and dig down to the drainage pipes. Make sure to cover the area with rocks to avoid any topsoil clogging up the pipes.
Cover with topsoil
Once completed, you can cover the entire soakway with some topsoil to hide the drainage system.