The Río Sis is a river in southwest Guatemala. Its sources are in the

Sierra Madre Sierra Madre (Spanish, 'mother mountain range') may refer to: Places and mountains Mexico *Sierra Madre Occidental, a mountain range in northwestern Mexico and southern Arizona *Sierra Madre Oriental, a mountain range in northeastern Mexico *S ...

range, on the slopes of the Santo Tomás and

Zunil Zunil () is a town and municipality in the Quetzaltenango department of Guatemala with a surface area of .Suchitepéquez. It flows southwards through the municipalities of

San Francisco Zapotitlán San Francisco Zapotitlán () is a town, with a population of 18,468 (2018 census),Citypopulation.de
Populatio ...

Cuyotenango Cuyotenango is a town and municipality in the Suchitepéquez department of Guatemala Guatemala ( ; ), officially the Republic of Guatemala ( es, República de Guatemala, links=no), is a country in Central America. It is bordered to the nor ...

San Lorenzo San Lorenzo is the Italian and Spanish name for Lawrence of Rome, Saint Lawrence, the 3rd-century Christian martyr, and may refer to: Places Argentina * San Lorenzo, Santa Fe * San Lorenzo Department, Chaco * Monte San Lorenzo, a mountain on t ...

and Mazatenango and joins the

Icán River The Río ícán is a river in Southwest Guatemala. Its sources are in the Sierra Madre range, on the slopes of the Santo Tomás volcano in the department of Suchitepéquez. It flows southwards through the coastal lowlands of Suchitepequez to the ...

, which flows into the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

. The Sís–Icán river basin covers an area of 919 km² (355 sq ml).

References

Rivers of Guatemala {{Guatemala-river-stub