Science Target Conference Systems, Ajman 4th International Environment Conference 2016

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Natural Heritage as a structure for urban regeneration: Case of El Harrach river
Amel BELLALA, Amira Manel ZOUAOUI

Last modified: 2016-01-04

Abstract


Discredited for a long time, El Harrach river became extremely polluted today and it exceeds 30 times the accepted standards and 400 times the WHO standards. Indeed, it crosses over its last nine kilometers to its outfall, an important urban and industrial zone. Nonetheless, The river pollution threatens the bay of Algiers. Refering to Mistuo Yoshida studies (2005), the river containslead, chlorine, zinc and chromium in large quantities released into the sea.

Being a main part of the urban structure and the natural grid of the city, with 67km-long, it starts in the Blida Atlas and flows into the Mediterranean, in the middle of the Bay of Algiers. Relative modest operations have been undertaken, trying to absorb the pollution. Recently, the government  launched rigorous decontamination works as a part of the new redevelopment plan  of Algiers by 2029, where the river is considered as an important ecological axis and natural regenerative of the urban structure.

This article analyses the strategy of reinstatement of this urban and natural microcosm through five segments as a green heritage and generator of the city of tomorrow, with a special focus on the impact of the river redevelopment on these different slices, in relation to the protection of ecosystems, channelling axis of urbanization, for the medium and the long terms.

Keywords: Water, Pollution, Urban, Regeneration