There is a small section of my back yard that is adjacent to my house and slopes towards it. The yard itself is predominately graded away from the house, so I just need to raise the grade in this section to ensure that water does not run towards my house when it rains.
I plan to cover the area with peastone as finish(currently just dirt), but what type of fill should I use under the peastone to actually raise the grade. Should I use clay, or something else that doesn't drain, or is topsoil sufficient?