water leak

I have a F30 328i, whenever it rains, water runs down by the boot lever and soaks by the roof, near the sunroof. How do I fix this issue ?

Please can someone help shed light on a water leak - e90 320i 2006. I have been rebuilding the engine and replaced all the gaskets on the water pump. I finally managed to get the engine in and started filling with fluids only to see a dribble of water from the water pump. I separated the power...