1. The Guadalete River Basin and
Estuary
F.-Javier Gracia
Javier.gracia@uca.es
Coastal and Marine Geology and Geophysics Research Group
Dept. of Earth Sciences
University of Cádiz

2. CÁDIZ PROVINCE
GUADALQUIVIR ESTUARY
STRAIT OF GIBRALTAR

3. THE ALPINE MEDITERRANEAN MOUNTAIN RANGES AND OROGENS

4. THE BETIC CORDILLERA

5. MAIN ANDALUSIAN RIVER BASINS

6. TOPOGRAPHY

7. RELIEF

8. MAIN PHYSIOGRAPHIC REGIONS

9. GEOLOGY OF CÁDIZ

10. MAIN AQUIFERS IN THE BASIN

11. THE GUADALETE RIVER BASIN
Water discharge: about 600 hm3/yr

12. MAIN ANNUAL PRECIPITATION

13. PLUVIAL EROSIVITY – SOIL EROSION

14. NATURAL PROTECTED AREAS

15. The basin head and upper valleys
Sierra de Grazalema

19. ZAHARA RESERVOIR

20. The northern mountain sector

29. The intermediate hills (campiña)
and the big reservoirs

31. ARCOS DE LA FRONTERA

32. THE ARCOS AND BORNOS RESERVOIRS

33. LOS HURONES RESERVOIR

34. The lower valleys and lowlands

37. The Guadalete estuary and the coast

38. Bay of Cádiz

39. Holocene evolution

42. Martínez del Pozo (2000)
Recent evolution of coastline

43. Recent evolution of coastline

44. 1956 2002
Recent evolution of coastline

45. Salt marshes

46. Salt marshes

47. ©MARM
©MARM
Tidal channels

48. Tidal channels

49. Sea level trends for Cádiz city
(Tidal gauge records, 1961 – 2008)
Permanent Service for Mean Sea Level

50. Present Guadalete estuary at El Puerto de Santa María