Bolsón de Mapimí

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The Bolsón de Mapimí is an endorheic river basin located in the center-north of the Mexican Plateau.

It is also known as the Comarca Lagunera, and is shared by the Mexican states of Durango, Coahuila, Chihuahua, and Zacatecas. It takes its name from Mapimí, a town in Durango.

The basin is bounded by the Sierra Madre Occidental to the west, and by the basin of the Conchos River, a tributary of the Rio Grande, to the north. Major rivers in the basin are the Nazas River and its tributaries, which originate in the Sierra Madre Occidental, and the Aguanaval River, which flows north from central Zacatecas state.

The conurbation of Torreón, with more than a million inhabitants, lies in the Bolsón de Mapimí.