The Wadi El Harrach is an Algerian

river A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...

that originates in the Bliden,

Atlas Mountains The Atlas Mountains are a mountain range in the Maghreb in North Africa. They separate the Sahara Desert from the Mediterranean Sea and the Atlantic Ocean; the name "Atlantic" is derived from the mountain range, which stretches around through M ...

near Hammam Melouane. It is long and flows into the

Mediterranean The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern ...

, right in the middle of the . Photo oued el harrach 28052016 001

Oued El Harrach crosses the Mitidja plain from Bougara and

irrigate Irrigation (also referred to as watering of plants) is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has be ...

agricultural Agriculture encompasses crop and livestock production, aquaculture, and forestry for food and non-food products. Agriculture was a key factor in the rise of sedentary human civilization, whereby farming of domesticated species created f ...

areas all around, thanks in particular to its tributaries and canals, Oued Djemâa, Oued Baba Ali, Oued El Terro and Wadi Semar which crosses an industrial zone Of the

east East is one of the four cardinal directions or points of the compass. It is the opposite direction from west and is the direction from which the Sun rises on the Earth. Etymology As in other languages, the word is formed from the fact that ea ...

ern

suburb A suburb (more broadly suburban area) is an area within a metropolitan area. They are oftentimes where most of a metropolitan areas jobs are located with some being predominantly residential. They can either be denser or less densely populated ...

s of

Algiers Algiers is the capital city of Algeria as well as the capital of the Algiers Province; it extends over many Communes of Algeria, communes without having its own separate governing body. With 2,988,145 residents in 2008Census 14 April 2008: Offi ...

. Its main tributary is the Oued El Kerma which increases the volume of the river thanks to the waters descended from the Algerian sahel. The Oued El Harrach has an average flow of but this can rise to in times of flood. The river flows through of Industrial Area, in

, and so is now very polluted.

Pollution Pollution is the introduction of contaminants into the natural environment that cause harm. Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the component ...

in the river now threatens the bay of Algiers, since in 2005 a study conducted by the

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

ese researcher Mitsuo Yoshida discovered

lead Lead () is a chemical element; it has Chemical symbol, symbol Pb (from Latin ) and atomic number 82. It is a Heavy metal (elements), heavy metal that is density, denser than most common materials. Lead is Mohs scale, soft and Ductility, malleabl ...

chlorine Chlorine is a chemical element; it has Symbol (chemistry), symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between ...

zinc Zinc is a chemical element; it has symbol Zn and atomic number 30. It is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic tabl ...

and

chromium Chromium is a chemical element; it has Symbol (chemistry), symbol Cr and atomic number 24. It is the first element in Group 6 element, group 6. It is a steely-grey, Luster (mineralogy), lustrous, hard, and brittle transition metal. Chromium ...

in large quantities discharged into the sea. File:Photo_oued_el_harrach_28052016_002.jpg, Oued El Harrach près de Semmar à Gué de Constantine File:Photo oued el harrach 28052016 003.jpg, Oued El Harrach près de Baraki

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Harrach The House of Harrach is the name of an old and influential German nobility, Austro-German noble family, which was also part of the Bohemian nobility. The ''Grafen'' (Counts) of Harrach were among the most prominent families in the Habsburg Empire ...

Bodies of water of Algeria Landforms of Algeria {{Algeria-river-stub

See also

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