Oued El Harrach is a river located in northern Algeria. It flows through the Algiers region and is approximately 120 kilometers long. The river originates in the Tell Atlas mountains and eventually empties into the Mediterranean Sea. It plays a significant role in the local ecosystem and provides water for agriculture and other uses. The river is also known for its surrounding areas, which include several towns and cities. Oued El Harrach has been subject to environmental challenges, including pollution and urban development. Efforts are ongoing to preserve its natural habitat and improve water quality for the communities that depend on it.