The Bou Regreg ( ar, أبو رقراق) is a

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of ...

located in western

Morocco Morocco (),, ) officially the Kingdom of Morocco, is the westernmost country in the Maghreb region of North Africa. It overlooks the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to A ...

which discharges to the

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

between the cities of

Rabat Rabat (, also , ; ar, الرِّبَاط, er-Ribât; ber, ⵕⵕⴱⴰⵟ, ṛṛbaṭ) is the capital city of Morocco and the country's seventh largest city with an urban population of approximately 580,000 (2014) and a metropolitan populati ...

and

Salé Salé ( ar, سلا, salā, ; ber, ⵙⵍⴰ, sla) is a city in northwestern Morocco, on the right bank of the Bou Regreg river, opposite the national capital Rabat, for which it serves as a commuter town. Founded in about 1030 by the Banu Ifran ...

. The estuary of this river is termed Wadi Sala. The river is 240 kilometres long, with a tidal

estuary An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environment ...

of approximately 24 kilometres extending upriver. Its average discharge is 23 m³/s and can reach 1500 m³/s during periods of

flood A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrol ...

ing. The

source Source may refer to: Research * Historical document * Historical source * Source (intelligence) or sub source, typically a confidential provider of non open-source intelligence * Source (journalism), a person, publication, publishing institute o ...

of the river originates from the

Middle Atlas The Middle Atlas (Amazigh: ⴰⵟⵍⴰⵙ ⴰⵏⴰⵎⵎⴰⵙ, ''Atlas Anammas'', Arabic: الأطلس المتوسط, ''al-Aṭlas al-Mutawassiṭ'') is a mountain range in Morocco. It is part of the Atlas mountain range, a mountainous region ...

mountains at an

altitude Altitude or height (also sometimes known as depth) is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The exact definition and reference datum varies according to the context ...

of 1627 meters on the level of Jbel Mtourzgane (Province of

Khemisset Khemisset (Amazigh language: Zemmur, ar, الخميسات) is an Amazigh town in northern Morocco with a population of 131,542 recorded in the 2014 Moroccan census. It is situated on the A2 motorway between Rabat (81 km) and Meknès (57 ...

) and of Grou (Province of

Khénifra Khenifra ( Berber: ''Xnifṛa'', ⵅⵏⵉⴼⵕⴰ, ar, خنيفرة) is a city in northern central Morocco, surrounded by the Atlas Mountains and located on the Oum Er-Rbia River. National Highway 8 also goes through the town. The population, ...

) and descends to its mouth at the

separating the cities of Rabat to the south and Salé to the north.

Water quality

Water quality Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage. It is most frequently used by reference to a set of standards against which compliance, generally achieved through tr ...

issues of the Bou Regreg include

tidal Tidal is the adjectival form of tide. Tidal may also refer to: * ''Tidal'' (album), a 1996 album by Fiona Apple * Tidal (king), a king involved in the Battle of the Vale of Siddim * TidalCycles, a live coding environment for music * Tidal (servic ...

saltwater intrusion Saltwater intrusion is the movement of saline water into freshwater aquifers, which can lead to groundwater quality degradation, including drinking water sources, and other consequences. Saltwater intrusion can naturally occur in coastal aquifers ...

, excessive

runoff Runoff, run-off or RUNOFF may refer to: * RUNOFF, the first computer text-formatting program * Runoff or run-off, another name for bleed, printing that lies beyond the edges to which a printed sheet is trimmed * Runoff or run-off, a stock marke ...

nitrate Nitrate is a polyatomic ion A polyatomic ion, also known as a molecular ion, is a covalent bonded set of two or more atoms, or of a metal complex, that can be considered to behave as a single unit and that has a net charge that is not zer ...

s from agricultural land uses and mercury

contamination Contamination is the presence of a constituent, impurity, or some other undesirable element that spoils, corrupts, infects, makes unfit, or makes inferior a material, physical body, natural environment, workplace, etc. Types of contamination ...

thought to arise from use of certain

pesticide Pesticides are substances that are meant to control pests. This includes herbicide, insecticide, nematicide, molluscicide, piscicide, avicide, rodenticide, bactericide, insect repellent, animal repellent, microbicide, fungicide, and lampri ...

s within the

drainage basin A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, t ...

History

The

Phoenicia Phoenicia () was an ancient thalassocratic civilization originating in the Levant region of the eastern Mediterranean, primarily located in modern Lebanon. The territory of the Phoenician city-states extended and shrank throughout their histor ...

ns and the

Carthaginians The Punic people, or western Phoenicians, were a Semitic people in the Western Mediterranean who migrated from Tyre, Phoenicia to North Africa during the Early Iron Age. In modern scholarship, the term ''Punic'' – the Latin equivalent of the ...

, who founded several colonies in Morocco, inhabited the banks of the Bou Regreg approximately two kilometers from its mouth at the ancient site of

Chellah The Chellah or Shalla ( ber, script=Latn, Sla or ; ar, شالة), is a medieval fortified Muslim necropolis and ancient archeological site in Rabat, Morocco, located on the south (left) side of the Bou Regreg estuary. The earliest evidence of th ...

. This archaeological site contains the

ruins Ruins () are the remains of a civilization's architecture. The term refers to formerly intact structures that have fallen into a state of partial or total disrepair over time due to a variety of factors, such as lack of maintenance, deliberate ...

of a

Roman Roman or Romans most often refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of ancient Rome *''Epistle to the Romans'', shortened to ''Romans'', a letter ...

town known as Sala Colonia and referred to as Sala by

Ptolemy Claudius Ptolemy (; grc-gre, Πτολεμαῖος, ; la, Claudius Ptolemaeus; AD) was a mathematician, astronomer, astrologer, geographer, and music theorist, who wrote about a dozen scientific treatises, three of which were of importanc ...

. Chellah was a significant ancient port city with remains including the

Decumanus Maximus In Roman urban planning, a decumanus was an east–west-oriented road in a Roman city or castrum (military camp). The main decumanus of a particular city was the Decumanus Maximus, or most often simply "the Decumanus". In the rectangular street gr ...

, or principal roadway, as well as those of a forum, a monumental fountain, a triumphal arch, and other Roman ruins.C. Michael Hogan, ''Chellah'', The Megalithic Portal, ed. A. Burnham, 200

/ref>

References

{{Authority control Rivers of Morocco Rabat Geography of Rabat-Salé-Kénitra

Water quality

History

See also

References