Originally Posted by sandman512
No low lying area, there is a pitch to the rear. I'm thinking just POOR drainage, the ground seems really compact.
Appropriate section highlighted, given you have eliminated a high water table.
You essentially have a perched water table and irrigation is a bit like adding water to dry mix concrete .... add just a little too much water it turns into soup. Same thing is happening with your soil. The usual recommendation of standard shallow coring/aerating will not cut it in this case. Changing the grade by adding soil won't work either.