Geomorphological analysis and evolution of an altered floodplain drainage system. The case of the Partido Stream (Spain)

Huelín Rueda, Pablo and Robredo Sanchez, José Carlos and Mintegui Aguirre, Juan Ángel (2014). Geomorphological analysis and evolution of an altered floodplain drainage system. The case of the Partido Stream (Spain). "Catena" (n. 118); pp. 136-146. ISSN 0341-8162. https://doi.org/10.1016/j.catena.2014.02.008.

Description

Title: Geomorphological analysis and evolution of an altered floodplain drainage system. The case of the Partido Stream (Spain)
Author/s:
  • Huelín Rueda, Pablo
  • Robredo Sanchez, José Carlos
  • Mintegui Aguirre, Juan Ángel
Item Type: Article
Título de Revista/Publicación: Catena
Date: 2014
ISSN: 0341-8162
Subjects:
Faculty: E.T.S.I. Montes (UPM)
Department: Ingeniería Forestal [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The Partido Stream is a small torrential course that flows into the marsh of the Doñana National Park, an area that was declared a World Heritage Site in 1994. Before 1981, floods occurred, and the stream overflowed onto a floodplain. As an old alluvial fan, the floodplain has its singular orography and functionality. Fromthe floodplain, several drainage channels, locally called caño, discharged into themarsh. The Partido Streamhad themorphology of a caño and covered approximately 8 km from the old fan to the marsh. The stream was straightened and channelised in 1981 to cultivate the old fan. This resulted in floods that were concentrated between the banks in the following years, which caused the depth of water and the shear stress to increase, thus, scouring the river bed and river banks. In this case, the eroded materials were carried towards the marsh where a new alluvial fan evolved. Control measures on the old fan were implemented in 2006 to stop the development of the new alluvial fan downstream over the marsh. Thus, the stream would partially recover its original behaviour that it had before channelisation, moving forwards in a new, balanced state. The present study describes the geomorphological evolution that channelisation has caused since 1981 and the later slow process of recovery of the original hydraulic-sedimentation regime since 2006. Additionally, it deepens the understanding of the original hydraulic behaviour of the stream, combining field data and 2D simulations.

More information

Item ID: 30576
DC Identifier: http://oa.upm.es/30576/
OAI Identifier: oai:oa.upm.es:30576
DOI: 10.1016/j.catena.2014.02.008
Deposited by: Memoria Investigacion
Deposited on: 31 Jul 2014 07:47
Last Modified: 25 May 2015 15:03
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