The Lawriqucha River originates in a small glacial lake called Niñococha in the Raura mountain range at an elevation of 4,809 metres (15,778 ft).

[3] In 1952 this lake was identified as the source of the Amazon River by an English explorer, Sebastian Snow.

Near the town of Rondos (Runtus) the Lawriqucha joins the Nupe River to form the Marañón.

[10] The total length of the Lawriqucha River, in straight-line distance from Niñococha Lake to its junction with the Nupe, is about 50 kilometres (31 miles).

[11] A U.S. intelligence agency map of the area calls the lower portion of the Lauricocha River the Quebrada Linda ("Beautiful Gorge").