Editing Andalusia (section)

===Hydrography===
[[File:Ríos de Andalucía.png|thumb|325px|Rivers and basins of Andalusia.]]
Andalusia has rivers that flow into both the Atlantic and the Mediterranean. Flowing to the Atlantic are the [[Guadiana]], [[Odiel]]-[[Río Tinto|Tinto]], [[Guadalquivir]], [[Guadalete]], and [[Barbate (river)|Barbate]]. Flowing to the Mediterranean are the [[Guadiaro (river)|Guadiaro]], [[Guadalhorce]], [[Guadalmedina]], [[Guadalfeo]], [[Andarax]] (also known as the Almería) and [[Almanzora (river)|Almanzora]]. Of these, the [[Guadalquivir]] is the longest in Andalusia and fifth longest on the Iberian peninsula, at {{convert|657|km|mi}}.<ref>{{cite book |last=Del Moral |first=L. |chapter=El agua en Andalucía |title=Geografía de Andalucía (Coor. López Antonio) |year=2003 |publisher=Ariel Geografía |location=Barcelona |language=es |isbn=84-344-3476-8}}</ref>

[[File:Córdoba aerial 9.jpg|thumb|The Guadalquivir as it passes through Córdoba.]]
The rivers of the Atlantic basin are characteristically long, run through mostly flat terrain, and have broad river valleys. As a result, at their mouths are [[estuary|estuaries]] and [[wetland]]s, such as the marshes of [[Doñana National Park|Doñana]] in the delta of the Guadalquivir, and [[wetland]]s of the Odiel. In contrast, the rivers of the Mediterranean Basin are shorter, more seasonal, and make a precipitous descent from the mountains of the Baetic Cordillera. Their estuaries are small, and their valleys are less suitable for agriculture. Also, being in the [[rain shadow]] of the Baetic Cordillera means that they receive a lesser volume of water.<ref name="fisicoambiental" />

The following hydrographic basins can be distinguished in Andalusia. On the Atlantic side are the Guadalquivir basin; the Andalusian Atlantic Basin with the sub-basins Guadalete-Barbate and Tinto-Odiel; and the Guadiana basin. On the Mediterranean side is the Andalusian Mediterranean Basin and the upper portion of the [[Segura basin|basin of the Segura]].<ref>{{cite web |url=http://www.juntadeandalucia.es/agenciadelagua/portalweb/sites/aaa/portal/index.jsp?lang=es&perfil=org&opcion=listadoTematico&tema=/Agencia_Andaluza_Del_Agua/&apartado=organizacion&desplegar=/Agencia_Andaluza_Del_Agua/ |title=La nueva administración del agua en Andalucía |access-date=4 October 2008 |publisher=Agencia Andaluza del Agua (Consejería de Medio Ambiente) |url-status=dead |archive-url=https://web.archive.org/web/20081212204748/http://www.juntadeandalucia.es/agenciadelagua/portalweb/sites/aaa/portal/index.jsp?lang=es |archive-date=12 December 2008}}</ref>