i might be a little dense, but i can't tell where this is. Do you have another picture a little further back so that i can orient myself?
Top LEFT pic is the bladder exposed after partially pulling the wheel well lining out of the way. I did not remove the tire, I just put the ST on a jackstand and turned the wheel to the left. Had to remove a couple of retention pop pins, a small retaining screw, a nut-washer in order to deform and lift up the cloth-like lining.
Top RIGHT pic is where the leaves are landing on the window and exiting down and into the relief bladder and the wheel well. The bladder is about the size of a pack of cigarettes.
Very poor design IMHO
(1) the accumulation of leaves fills the rubber relief bladder
You MUST clean out the rubber relief bladder, it pops out and pops back in. This is where the water is accumulating.
(2) Leaves can also fills up the void behind the wheel well lining, creating greater moisture issues, like mold/rust. (While I don't believe this is the cause of the water on the driver side floor, it should be cleaned out when you clean out the bladder).