the guadalete river basin
TRANSCRIPT
The Guadalete River Basin and
Estuary
F.-Javier Gracia [email protected]
Coastal and Marine Geology and Geophysics Research Group
Dept. of Earth Sciences
University of Cádiz
CÁDIZ PROVINCE
GUADALQUIVIR ESTUARY
STRAIT OF GIBRALTAR
THE ALPINE MEDITERRANEAN MOUNTAIN RANGES AND OROGENS
THE BETIC CORDILLERA
MAIN ANDALUSIAN RIVER BASINS
TOPOGRAPHY
RELIEF
MAIN PHYSIOGRAPHIC REGIONS
GEOLOGY OF CÁDIZ
MAIN AQUIFERS IN THE BASIN
THE GUADALETE RIVER BASIN
Water discharge: about 600 hm3/yr
MAIN ANNUAL PRECIPITATION
PLUVIAL EROSIVITY – SOIL EROSION
NATURAL PROTECTED AREAS
The basin head and upper valleys
Sierra de Grazalema
ZAHARA RESERVOIR
The northern mountain sector
The intermediate hills (campiña)
and the big reservoirs
ARCOS DE LA FRONTERA
THE ARCOS AND BORNOS RESERVOIRS
LOS HURONES RESERVOIR
The lower valleys and lowlands
The Guadalete estuary and the coast
Bay of Cádiz
Holocene evolution
Martínez del Pozo (2000)
Recent evolution of coastline
Recent evolution of coastline
1956 2002
Recent evolution of coastline
Salt marshes
Salt marshes
© M
AR
M
© M
AR
M
Tidal channels
Tidal channels
Sea level trends for Cádiz city
(Tidal gauge records, 1961 – 2008)
Permanent Service for Mean Sea Level
Present Guadalete estuary at El Puerto de Santa María
