Ludueña Stream

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The last part of the course of the Ludueña Stream, before emptying into the Paraná River in Rosario.

The Ludueña Stream (in Spanish, Arroyo Ludueña) is a small river (about 19 kilometres long including its tributaries) in the province of Santa Fe, Argentina, which starts near the city of Rosario and flows through it, mostly east-southwards, ending in the Paraná River in the neighbourhood commonly known as Arroyito, near Rosario Central's football stadium.

The Ludueña drains an 800 km² area which includes Rosario and several smaller towns (Pérez, Zavalla, Pujato, Funes, Roldán, San Jerónimo, Luis Palacios, Ricardone, Ibarlucea, and Camilo Aldao). Parts of its drainage basin are subject to flooding. The last important episode, in 1986, affected several neighbourhoods of the north-east of Rosario (notably the barrios of Ludueña Norte and Empalme Graneros, where water was almost 2 m deep in some points). This flood sparked a grassroots movement to pressure the provincial government to fund preventive measures.

The exit of the underground pipes that carry the Ludueña Stream. The course is heavily polluted at this point, which shows in times of low water level.

A length of 1.5 km of the Ludueña Stream were piped into five underground closed conduits, with a cross section of 74 m², which cross densely populated areas and resurface to empty the stream into a final open section a few hundred metres from the Paraná River. In 1995, after two-year works, an earth-fill dam in the upper course of the Ludueña was completed; it is designed as a buffer, to contain and regulate sudden peaks of waterflow, and according to estimates it directly or indirectly benefits about 200,000 people in Rosario and nearby towns.

[edit] Sources

In Spanish unless otherwise noted.

JOURNAL OF ENVIRONMENTAL HYDROLOGY. The Electronic Journal of the International Association for Environmental Hydrology. On the World Wide Web at http://www.hydroweb.com. VOLUME 8. 2000. A CELL MODEL FOR HYDROLOGICAL-HYDRAULIC MODELING. Gerardo Riccardi. Consejo de Investigaciones and CURIHAM. Facultad de Ciencias Exactas, Ingeniería y Agrimensura, Universidad Nacional de Rosario, Rosario, Argentina. (English)
Followup report on the national Ministry of Economy website.
Reclaman fondos para trabajos en la presa del Ludueña - News in La Capital newspaper of Rosario.
Empalme Graneros, a dieciséis años de la gran inundación. - Report in Barrameda.com.ar, an environmental organization.