On another note, my wife showed me a gardening show where they took two clear containers with a hole in the bottom to allow the water to drain. Placed loose gravel in the bottom of one with dirt above the gravel. In the second container it was just dirt.
Adding water to the two. The first one with the gravel the water did not move down into the gravel very much. The other one passed the water top to bottom and slowly drained. Basically they said the water does not move to the gravel because of boundary. So the moisture will stay above the gravel and not move into that area.
So in my area with 1 inch top soil with clay under there is little movement of the water and explains why we have standing water in the low spots in the yard. These puddles will stay 2 or 3 days after a rain.