Always find Water

Practically, no matter where you are, you have the ability to sense the direction of the nearest water source.  

on a successful perception check, you can tell whether the water is salt or fresh, clean or noxious.

Within 1 mile you can pinpoint  a well, stream or pond.

Within 10 miles you can pinpoint a flowing river or lake.

Within 100 miles you can pinpoint a sea or ocean.