I suspect the sunroof drainage tube has become disconnected and is discharging water directly to the driver side floor. There was nearly an inch of water in my car after sitting in the rain for 24 hours. I vacuumed out the water and then 3 hours later(still raining the water was back, about a 1/4 inch deep. Door and windshield seals are OK and no water is on the side/walls. It's only on the floor and only on the driver's side. This leak became significantly worse after the car had repair/body work done on it. Could it be a drainage hose was loose and was further dislodged during the repair work? Is it possible for me to tighten or reattach it without taking it back to the repair shop?

Thoughts:

. Check the sunroof's seal--it may have deteriorated. Clean with silicone spray and a rag; afterwards, apply silicone grease. Replace the seal, if necessary.

. Examine the end of the drainage hoses for blockage; e.g. leaves, spiders, bugs, and other debris. Compressed air may help. Checking drainage hose connections may require removing the ceiling liner.