San Leon is marked wrong on that map. San Leon is by Texas City which is above Galveston Island (Google Maps has San Leon to the west of Texas City along the bay shore)
So you think they’ve got Texas
City and San Leon switched,
directionally?
I don’t know the area, but I’d be
more inclined to accept the FAA
map is likely more accurate than
Google maps. I’ve definitely gotten
bad info from Google maps.