I'll scan and email that portion of the map to you. In the meantime if you want to get a head start you can tell Ben the two characters for Shuibu are "water" and "step". Most likely he would know it just if Mac tell him "Shuibu" because it is a major centre or town.
It is not umcommon for duplications or even multiple villages with the same name. Especially those using direction as part of the name. There is a lot of villages whose names are north, east, south or west.