Lerma River

BW

Template: Infobox River / BILD_fehlt

Template: Infobox River / Obsolete

Template: Infobox River / Obsolete

The Río Lerma Santiago is 1270 km with Mexico's second longest river after the Río Bravo del Norte. Most of the rivers are, however, considered separately.

The Río Lerma ( formerly called Chicnahuapan ) rises south of the Nevado de Toluca about 24 km southeast of Toluca, State of Mexico. It forms the political border between the states of Querétaro and Michoacán and Guanajuato flows. After about 700 km, it flows into the Lake Chapala, from where he continues to flow under the name Río Grande de Santiago and flows 16 km north of San Blas in Nayarit State in the Pacific.

On his way to the Río Lerma flows through mainly the high plains of the Bajio and the lands of the state of Jalisco.

The non- navigable Río Lerma constitutes a main water reservoir for the capital Mexico City and its surroundings. The river suffers from an intensive use as an energy source and by the industrial belt of the Bajio. It is dammed in Nayarit of the Aguamilpa dam and the El Cajon Dam.

The water quality was caused by industrial and human sewage ( aguas negras ) severely impaired, but has improved in recent years through the construction of wastewater treatment plants something. However, several earlier very popular food fish are extinct.