Not sure what type of vehicle you have, so its a little tough to tell you how to fix it exactly...with that said, I would be willing to bet that your leak problem is not actually the floor board but an area above it and the water just goes to the low spot...give a little more info and may be able to help you out..
I have a waterline leak at my home from the street to my home....can I get a grant to fix this leak?
What kind of leak and where is it?
You have to determine the source of the leak then decide on how to fix it.
You will have to locate the source of the leak before you can fix it. Re-post with your findings.
It is not the heater core but rain water,near the hood hinge on the passenger side;they is a "cave in" area that trap water and in the middle they is a ruber plug that seem to leak. silicone fix the problem for a few day,now I'm back to square 1 and the leak is back.
You don't fix the leak on the water tower. It is not part of the island quest.
fix the leak
depends where around the tranny the leak is
Find it. Fix it.
you fix the leak
Depends entirely where the leak is coming from.
You need to identify the leak before you can fix it.