Tree by nawlins posted Mar 12, 2019 at 1:55 PM I recently bought a house in New Orleans, LA where the back yard slopes down to a mature oak tree. When it rains (which it does here a lot) it creates a mini lake around the base of the tree (see photo). It usually takes 4-5 days for the water to dissipate. I am concerned with hurricane season that flooding of my house/garage is possible, also it's a breeding ground for mosquitoes, lastly, I think it might be "drowning" the tree. Is it possible to add about 6" of a sandy soil to level the ground around the tree? Maybe not all the way to the base of the tree but a foot or so out?