Oued El Harrach

The Wadi El Harrach is an Algerian river that originates in the Bliden, Atlas Mountains near Hammam Melouane.

[1][2] It is 67 kilometres (42 mi) long and flows into the Mediterranean, right in the middle of the bay of Algiers [fr].

Its main tributary is the Oued El Kerma which increases the volume of the river thanks to the waters descended from the Algerian sahel.

[4] The river flows through 9 km (5.6 mi) of Industrial Area, in Algiers, and so is now very polluted.

Pollution in the river now threatens the bay of Algiers, since in 2005 a study conducted by the Japanese researcher Mitsuo Yoshida discovered lead, chlorine, zinc and chromium in large quantities discharged into the sea.