The rivers that drain the region begin with the Purral River, with the Navarro River as its tributary as well as the Mozotal brook. The Purral river is a tributary of the Torres River along with the Cangrejos, Patalillo and Patal brooks, together with the Tiribí, Ipís, Durazno and Barreal streams. These watercourses, except for the Torres River, have their source in the canton, on the western slope of the Cabeza de Vaca Hill, and course east-to-west. The Torres, Tiribí, Durazno, Ipís flows, and the ravines Barreal and Patal serve as cantonal borders. The first borders with San José and Montes de Oca. The second borders with the Cartago province. The rivers Durazno and Ipís along with Vázquez de Coronado and the ravines, respectively border with the cantons of Moravia and Montes de Oca.