 The upper reach of the river lies within the boundaries of Lauca National Park in the Parinacota Province.Lauca River receives waters from a group of lakes known as Quta Qutani through the "Desaguadero River".In this area there is a type of marsh known as Parinacota wetlands, in which converge several streams, being the more important the river just mentioned, which has a variable flow rate ranging from 100 to 560 l/s, and an average of 260 l/s.