Re: 06 Escape rear storage compartmt flooding
Three possibilities come to mind. If it gets wet while parked, the two side window seals should be checked using a garden hose. I would also check the seal at the read hatch and rear window also. The side windows are more likely. To check, I would remove the inner panels so that the sheet metal behind the windows is exposed. You might find a 'water trail' in the dust that normally accumulates behind the panels.
A last shot is the drain for the sunroof, if you have one. Tubes run from the sunroof down through the pillars to dump the water to ground. If the drains are plugged or the tubes are loose or leaky, water can go where it is not wanted.
If the water gets in while driving, I would look for a missing body plug on the underside of the vehicle.