Here are the 'Water' maps for the zones I mentioned in the previous post with the PVP regions tagged (1.4MB):
http://www.rama.demon.co.uk/pvpmaps.tar.gz
The directory in the tar file is called pvpmaps but that is just a temp directory I put them in while creating the archive.
Once you have extracted them, drop them in your Maps directory where the other .wtr files are.