The Tonto River is a river of Oaxaca, Mexico that flows from the mountains of Zongolica. It is dammed by the

Miguel Alemán Dam The Miguel Alemán Dam is on the Tonto River in the Papaloapan Region of Oaxaca state in southern Mexico, just upstream from the town of Temascal or Nuevo Soyaltepec, forming the Miguel Alemán Lake with an area of 47,800 hectares. The dam oper ...

near the town of

Temascal or Nuevo Soyaltepec Temascal is a town in the Mexican state of Oaxaca which is the seat of the municipality of San Miguel Soyaltepec. It is part of the Tuxtepec District of the Papaloapan Region. The name ''Soyaltepec'' means "hill of palm trees" in Náhuatl but the ...

, forming the

Miguel Alemán Lake --> Miguel is a given name and surname, the Portuguese and Spanish form of the Hebrew name Michael. It may refer to: Places *Pedro Miguel, a parish in the municipality of Horta and the island of Faial in the Azores Islands *São Miguel (disambi ...

. Below the dam, the river flows southeast past San Juan Bautista Tuxtepec, where it joins the

Santo Domingo River Santo Domingo River is a river of Venezuela. It is part of the Orinoco River basin. See also *List of rivers of Venezuela This is a list of rivers in Venezuela. By drainage basin This list is arranged by drainage basin, with respective tributa ...

to form the Papaloapan River.

References

Geography of Mesoamerica Rivers of Oaxaca Papaloapan River {{Mexico-river-stub