Keith, Might want to put some dri-lock or asphalt over those blocks. The house I grew up in always had a couple places it would leak. I went back up there after one heavy rain and hunted down where it was coming in from. Ended up finding the main culprit was where the gas lines had been installed - probably in the 60s. The whole foundation had a originally been sealled with some sort of asphalt product (1920s) and it was missing all around where the gas line went in - 3.5 or 4' below grade. That was enough for water to seep in when the ground got fully saturated.