The River

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!