The Matanza Riachuelo River
Basin is Argentina’s densest region, housig over 6 million people. It is also the country’s most environmentally degraded area due to heavy water and air contamination that has taken place for the past 150 years. Furthermore, this domain is shared by 15 different jurisdictions, including the City of Buenos Aires, thus facing great legal-administrative difficulties that prevent its sanitation and urban development. For these reasons, it has become a very devalued area with a great part of its population living in informal settlements and suffering from serious environmental health issues. This paper describes Planning and Urban Design measures that were incorporated