Several dry valleys originate on Llullaillaco, including Quebrada de las Zorritas on the north-northeastern slope, Quebrada El Salado and Quebrada Llullaillaco on the northwestern slope, and Quebrada La Barda on the southwestern slope. The Quebrada Llullaillaco drains into the Salar de Punta Negra northwest of the volcano. The volcano is relatively unaffected by water erosion, water is only episodically present on the mountain. In addition, there is a lake called the Llullaillaco volcano lake on the mountain; it is one of the highest lakes in the world.