[Millie]

Thank you for responding Linda Lee. You are correct it's just hard clay on the bottom. That was one of my concerns where is the water going to distribute at each end. As you can see I have flower beds and roses planted at both ends.

If I understand this correctly I should dig a three foot hole deep by two feet wide at the back end (near the fence??) where the small shed is but the slope grading is going the other way.

Also, the trench then would be dug about 5-6' away from the walkway, is that correct?

Much appreciated!