Water in my door pocket

[petery]

With the heavy rain we've been having I'm getting a problem of my drivers door pocket filling up with water.

There is no sign of the water running to the door pocket in any other part of the interior and the carpets have not got a drop on them so not sure where it is coming from. It takes some pretty heavy rain for it to appear but even so shouldn't be happening and once it's there it doesn't seem to drain away although I've never left it that long.

Any suggestions?

Cheers