Water infiltration in the trunk

Hello, after a three-hour drive through really bleak rain weather, I had to get angry that my jacket was neatly wet in the trunk. Until I then checked the compartment under the normal trunk and had to find out that there was 2 centimeters deep water – there was my mood something demoralized, I don’t know about my R230. I lit it all with a flashlight as well and also felt with my hand, whether somewhere noticeable Wass Unfortunately, I couldn’t really identify anything, despite the amount of H2O I found. Does anyone have a tip for me, where the liquid could probably have run in? My first tip would have been the sealing edge from the trunk, but with the amount of water I would have expected to find clearer traces. Are there other points that would have been worth checking? The car must anyway in the next time into the Inspek However, the (in itself very good) workshop is certainly grateful for any help with such a case.