To map want to use oldstyle water. So before the game read the section "Recommends" in the file digs06.txt. At the moment, the best engine for this map is RMQ. Equally important is the transparency of water. I recommend r_wateralpha 0.3
ps. I host my site is antihotlink, thus giving a reference not to the map, and on the page. If someone has the opportunity, upload the map in another place.