This spell enables the caster to find any water source within range of the spell, allowing him to estimate how plentiful the water is. After casting the spell, the caster can search the immediate vicinity, and any water within 90 feet of the druid in the direction of concentration along a 10-foot-wide path) will be detected. The caster can tell approximately how much water there is; these estimations are: traces only, a small amount, a goodly amount, a large amount, or a vast supply. The caster has a 5% chance per level to know if the water is drinkable (fresh, salty, unfit). Thus, the caster might detect a water source beneath a cave floor, but might not know if it is potable until the party digs down to it. Water can be found through rock, metal, or any other material, as long as the water is within spell range and area.
The material component for this spell is a forked stick (divining rod).
Notes: Very rare spell, more commonly known to druids or granted by gods of divination. (Updated from Dragon Magazine.)