Restoration Of A Degraded Torrential Stream By
Means Of A Flood Control System: The Case Of
Arroyo Del Partido Stream (Spain)
Author(s)
J. A. Mintegui Aguirre, J. C. Robredo Sánchez,
C. De Gonzalo Aranoa & P. Huelin Rueda
Abstract
The Arroyo del Partido is a small torrential stream (307.67 km2), draining into
the El Rocío marsh, in the Doñana National Park (Spain).The DNP was declared
a UNESCO Heritage site (1994), since it has an important role for bird migration
between Europe and Africa. The last reach (7 km) of the stream was channelized
in 1981, thereby the flowing conditions during floods changed. This fact caused
the formation of a large alluvial fan over the wetland surface during the period
1982-2003, covering an area of 4.31 km2, with a volume of 4.48 × 106 m3.
In order to contain the advance of the fan into the marsh a flood control
system was used. This control system consists of two check dams, one of them
placed on the channelized reach, and a second one placed on a different stream,
which receives the surplus flows of the Arroyo del Partido during floods.
Between both streams a flood plain was reserved for sediments deposition and
flood attenuation purposes. Reconstruction works were carried out in the summer
of 2006. During the period 2007-09, works were monitored and adjusted on the
basis of their behaviour in flood events, with the objective of restoring the
former hydrological regime before the channelization.
Keyword: major events, flood protection, hydrologic correction, ecological
restoration.
1 Introduction
Originally the Arroyo del Partido presented the classical scheme of a torrential
stream (catchment area, gorge, alluvial fan and discharge channel). Then, during
Keywords
major events, flood protection, hydrologic correction, ecological
restoration
Related Book
Other papers in this volume
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