The Luduena Stream is a small river (about 19 kilometres long including its tributaries) in the , which starts near the city of Rosario and flows through it, mostly east-southwards, ending in the Parana River in the neighbourhood commonly known as Arroyito, near Rosario Central's football stadium.
The Luduena drains an 800 km area which includes Rosario and several smaller towns . Parts of its drainage basin are subject to flooding. The last important episode, in 1986, affected several neighbourhoods of the north-east of Rosario . This flood sparked a grassroots movement to pressure the provincial government to fund preventive measures.
A length of 1.5 km of the Luduena Stream were piped into five underground closed conduits, with a cross section of 74 m, which cross densely populated areas and resurface to empty the stream into a final open section a few hundred metres from the Parana River. In 1995, after two-year works, an earth-fill dam in the upper course of the Luduena 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.
March 2007 floods
Between the end of March and the beginning of April 2007, more than a week of increased rainfall in a wide area around the Parana-Plata basin raised the level of the Parana River and many of its tributaries. The Ibarlucea Canal, which empties into the Luduena Stream, overflowed and caused the evacuation of several thousand people. The Luduena Stream did not actually overflow, but brought alarm to the populous neighbourhoods which had suffered from floods in the past.
Some works that were needed to prevent the overflow of the Ibarlucea Canal had not been finished. It was later shown that if they had, the extra flow would have moved into the Luduena proper and brought it over the brink.
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, Ingenieria 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 Luduena - News in La Capital newspaper of Rosario.
Empalme Graneros, a dieciseis anos de la gran inundacion. - Report in Barrameda.com.ar, an environmental organization.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article Luduena Stream