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| Lakes of Algeria | |
|---|---|
| Name | Lakes of Algeria |
| Location | Algeria |
| Type | Mixed: natural and artificial |
| Outflow | Mediterranean Sea, endorheic basins |
| Basin countries | Algeria |
Lakes of Algeria are the inland and coastal standing water bodies found within Algeria's territory, ranging from seasonal salt pans to large reservoirs. They occur across physiographic provinces including the Tell Atlas, Hoggar Mountains, and the Sahara Desert, and are shaped by histories of exploration by figures associated with Sahara exploration and mapping by institutions such as the French colonial administration and modern agencies like the Office National de l'Eau et de l'Assainissement (ONEA). These lakes and reservoirs interact with transboundary features like the Mediterranean Sea and regional river systems tied to basins studied alongside neighboring Morocco and Tunisia.
Algerian lakes are distributed in coastal plains near Algiers, inland plateaus like the High Plateaus, and Saharan depressions such as the Chott Melrhir and Chott Ech Chergui. Northern concentrations occur along the Tell Atlas foothills where catchments originating in ranges like the Aurès Mountains feed lacustrine basins. Saharan endorheic basins link to features like the Tanezrouft corridor and paleolake basins investigated in studies of Holocene climate change and Quaternary geology. Artificial reservoirs are concentrated in catchments draining toward the Mediterranean Sea and along rivers such as the Chelif River and Oued Righ.
Algeria hosts saline chotts (seasonal salt lakes) such as Chott Melrhir and Chott Ech Chergui, freshwater natural lakes like the remnant depressions near Gourara oases, and numerous artificial reservoirs including Séris dam-fed impoundments and multipurpose reservoirs associated with projects by organizations similar to Agence Nationale des Barrages et Transferts (ANBT). Lakes vary from ephemeral playas studied in arid zone hydrology to perennial reservoirs used for irrigation near cities like Constantine and Oran. Morphologies reflect karstic influences in areas near Kabylie and tectonic basins formed during interactions of the African Plate and the Eurasian Plate.
Prominent features include the large saline depression Chott Melrhir, the marshy areas around Macta wetlands adjacent to Ras El Ma, and reservoirs such as those on the Seybouse River and Oued el Harrach tributaries supporting Algiers. Notable dams creating reservoirs include works on the Beni Haroun Reservoir system, infrastructure analogous to the Sidi Salem Dam projects in the Maghreb, and storage linked to urban supply systems serving Annaba and Blida. Saharan paleolakes like those inferred in the Tassili n'Ajjer region inform paleoclimatic reconstructions tied to research by institutions such as the University of Algiers and international teams from CNRS and the National Oceanic and Atmospheric Administration.
Hydrological regimes are governed by Mediterranean precipitation patterns influenced by the Atlas Mountains rainshadow, Atlantic influences near Oran, and Saharan aridity modulated by shifts during African Humid Period episodes. Seasonal inflows are controlled by snowmelt from the Tell Atlas and flash floods in the Hoggar region, with reservoirs smoothing variability for sectors including agriculture linked to the Ministry of Agriculture. Groundwater interactions involve aquifers studied in hydrogeology programs at Université Mentouri and transdisciplinary projects with the United Nations Environment Programme addressing recharge in the Saharan Atlas.
Lacustrine and palustrine habitats support migratory and resident fauna catalogued by ornithologists connected to sites like Ramsar listings in North Africa and organizations such as the International Union for Conservation of Nature. Wetlands near Macta provide stopover grounds for waders and species studied alongside Mediterranean flyway research by the Wetlands International network. Aquatic plants and brine-adapted invertebrates occur in saline chotts, with endemic taxa noted in regional faunal surveys by museums like the Natural History Museum of Algiers and research groups at Biskra University.
Lakes and reservoirs underpin irrigation schemes for cereals and date palm cultivation in regions like Sétif and the Ouargla oases, supply drinking water for urban centers including Algiers and Oran, and provide limited fisheries and recreation near sites developed by municipal authorities. Management involves national actors such as the Ministère des Ressources en Eau and regional directorates, with policy framed by Algeria’s infrastructural history dating to the French protectorate in Algeria era and post-independence development plans coordinated with institutions like the World Bank and African Development Bank.
Key threats include salinization and desertification linked to climate change in Africa, water extraction pressures from agricultural intensification in valleys like the Chelif basin, pollution from urban runoff near Algiers and industrial discharges in port cities like Annaba, and habitat loss affecting sites targeted by conservationists from BirdLife International and national NGOs. Conservation responses include protected area designations inspired by international frameworks such as the Ramsar Convention, restoration projects by the European Union funding mechanisms, and academic monitoring by centres like the Institut Pasteur d'Algérie and regional universities.