Diego Echavarría Misas (Itagüí, 28 September 1895 – Medellín, 19 September 1971) was a prominent businessman philanthropist who donated much of his money to the municipalities of the Aburrá Valley, especially Itagüí City.
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The main urban area of the Metropolitan Area of the Aburrá Valley is located in the center of the valley and consists of the four largest cities by population: Medellin, Bello, Itagüí and Envigado.
Consistent and adequate precipitation in the surrounding basins usually ensures that nearby water basins feeding the Aburrá Medellín River basin and subsequently the MAM can store approximately 178 BCM of water for the Metropolitan Area of the Aburrá Valley.
The city's speedy urban growth, especially since the 1960s, has filled the entire Aburrá Valley and made towns touch its borders: Bello, Copacabana, Girardota, Barbosa, Envigado, Itagüí, San Antonio de Prado, La Estrella, Sabaneta and Caldas, among others.
The development of the Aburra Valley occurred in the 1930s after a rapid population growth that produced a conurbation of Medellín, Itagüí, Envigado and Bello.
The Metropolitan Area of the Aburrá Valley borders with the municipalities of Ebejico, Heliconia, Angelopolis and Amagá to the west, with the municipalities of Santa Barbara and Fredonia to the south.