What is Bou Regreg?
{{Infobox river | name = Bou Regreg | image = BouRegreg.jpg | image_size = 300px | image_alt = | image_caption = Valley of the Bou Regreg near Rabat, Morocco | map = | map_size = | map_alt = | map_caption = | source1_location = | mouth_location = [[Atlantic Ocean]] | progression = | subdivision_type1 = Countries | subdivision_name1 = [[Morocco]] | location = | length = {{convert|240|km|mi|abbr=on}} | source1_elevation = | mouth_elevation = | discharge1_avg = | basin_size = | river_system = | tributaries_left = | tributaries_right = }} The '''Bou Regreg''' ({{lang-ar|أبو رقراق}}) is a [[river]] in western [[Morocco]]. It flows into the [[Atlantic Ocean]] between the cities of [[Rabat]] and [[Salé]]. The mouth of this river is called '''Wadi Sala'''.<ref>''Voyages and travels'', Hakluyt Society, page 280 (1962)</ref> The river is 240 kilometres long, with a tidal [[estuary]] going approximately 24 kilometres upriver. Its average [[Discharge (hydrology)|discharge]] is 23 m<sup>3</sup>/s and can reach 1500 m<sup>3</sup>/s during [[flood]]s. The [[Source (river or stream)|source]] of the river is the [[Middle Atlas]] mountains at an [[altitude]] of 1627 meters on the level of [[Jbel Mtourzgane]] (Province of [[Khemisset]]) and of Grou (Province of [[Khénifra]]). ==Water quality== [[Water quality]] issues of the Bou Regreg include [[tidal]] [[saltwater intrusion]], excessive [[surface runoff|runoff]] of [[nitrate]]s from [[agricultural]] land uses and [[mercury (element)|mercury]] [[contamination]] from use of some [[pesticide]]s in the [[drainage basin]].<ref>{{Cite web |url=http://gsa.confex.com/gsa/2007AM/finalprogram/abstract_124631.htm |title=Tarik Bahaj, ''Geochemical Characteristics of the Continental Waters Downstream from the Bou Regreg Basin and the Temara Plain, Morocco'', October 30, 2007 |access-date=August 21, 2017 |archive-date=October 20, 2014 |archive-ur