http://www.tesnexus.com/downloads/file.php?id=29559
and
http://www.tesnexus.com/downloads/file.php?id=29580
UNFORTUNATELY, it conflicts with the heightmap of Blackmarsh... Considering that the entire mod is not really that big geographically (a couple of buildings and some trees, really), I wonder if someone out there could make a working patch for it, because if that happens, we now have the first mod that works within Blackmarsh, no?
I am not a modder myself, so I am not sure how difficult of an undertaking something like this could be, but I think it's worth mentioning in hopes someone takes a look at it.
Cheers.