Abstract
The Spanish coastal aquifers are often complex and bounded by or inside mountainous areas. Most of them are in Quaternary and Miocene littoral sediments or highly karstified carbonate formations, or in the case of the Canary Islands in volcanic formations. Along the Spanish Mediterranean coast and the Balearic and Canarian archipelagos coasts, 95 groundwater bodies have been identified, often including several aquifers. Some kind of marine salinization problems have been identified in 70 groundwater bodies (20 with generalized problems) but only a few aquifers have detailed, specific studies on sea water intrusion. Information on salinization is often based on scarce and occasional data.
Highlights
The Spanish coastal aquifers are often complex and bounded by or inside mountainous areas
These problems were acute in the 1950s in the Besós Delta and in the 1960s in the Llobregat Delta, near Barcelona
Non-structural action is more difficult, may include closing abstractions, redefining water rights, taxation and limitations, is less prone to be accepted by people, and needs trained personnel for management, which is scarce in old organizations with a high inertia, and not prone to adapt to new requirements, as is the case of the water authorities
Summary
GW, groundwater WR, water resources IWRM, integrated WR management CUAS, GW user’s association. Reduction WI, water importation RW, relocation of wells SWD, seawater desalination WA, well abandonment EI, efficiency improvement WWR, waste water reclamation. WA recovery; Current partial use Llobregat Delta Serious in the 1970s.
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