Surrounding the Valley on all sides, save for the part where the mountain does, is the River. This river is known to become very dry in the summer, only having a few places to drink from. But in the fall and spring, the river has a good amount of water in it. They say it used have very powerful currents, but since all the droughts, the water is all but stagnant. It has a brown tint to it, but everyone still drinks it. It hasn't hurt anyone yet.
The current is strong so don't get swept away!