Canal Uchusuma is a canal in Chile. The canal begins at the northeastern foot of Cerro Huancune on the

Uchusuma River The Uchusuma River originates from the Peruvian Altiplano, crosses the northern tip of Chile and reaches Bolivia where empties into Mauri River. See also *List of rivers of Bolivia *List of rivers of Chile *List of rivers of Peru This is a list ...

, a principal tributary of the Mauri River; the diversion occurs at the locality ''Ancochaullanta'' at elevation. The path of the canal takes it southeastward through Peruvian territory until the Peru-Chile border at Laguna Blanca. It continues through Chilean territory from Laguna Blanca along the Arica–La Paz railway southwestward between the mountains Tacora and Caracarani, close to the

Canal Mauri Canal Mauri is a canal in Peru and Chile. It transfers water from the Mauri River watershed and transfers it into the Caplina River for irrigation purposes. An earlier canal Canal Uchusuma was constructed in the early 19th century and was replac ...

. It turns around Tacora's southern flank to its western side while following a low-altitude

moraine A moraine is any accumulation of unconsolidated debris (regolith and rock), sometimes referred to as glacial till, that occurs in both currently and formerly glaciated regions, and that has been previously carried along by a glacier or ice shee ...

, crosses the Rio Azufre westward and then the border between Chile and Peru. In Peru it continues southwestward and ends between the mountains of

Cerro Huaylillas Cerro is Spanish for "hill" or "mountain". Toponyms ;Bolivia: * Cerro Rico, the "Rich Mountain" containing silver ore near Potosi, Bolivia ;Brazil: *Cerro Branco, a municipality of Rio Grande do Sul *Cerro Grande, Rio Grande do Sul, a municip ...

and Cerro Chulluncane into the Rio Yungane. It does so by crossing the mountains through the Huaylillas Norte tunnel. The Rio Yungane subsequently joins the Quebrada Vilavilani. The Quebrada Vilavilani descends the Andes in southwestward direction, where it has several different names, and ends close to the city of Tacna into the Caplina River. This canal was constructed in 1820. There were numerous projects to expand the canal system to more water sources in the Mauri, and the

was constructed in 1954. According to a report in 1977, the Canal Uchusuma is still used when the other canal is under maintenance.

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* Chile–Peru border Buildings and structures in Arica y Parinacota Region Canals in Chile Irrigation canals Irrigation in Chile Canals in Peru Irrigation in Peru {{Peru-struct-stub