These are our study areas

It is a coastal aquifer located in southern Spain, where anthropogenic activities are putting pressure on water resources. In 2005, a dam was built just 17 km from the aquifer, intercepting the surface flow of the Guadalfeo River, as well as the construction of urban developments, golf courses, and greenhouses. These activities are expected to lead to a reduction in recharge and an increase in water demand. This aquifer has been monitored and equipped with multiple research wells, promoting this location as a natural underground water laboratory, where we are developing several research projects.

The Río Verde aquifer is one of the most affected in Andalusia due to seawater intrusion. Saltwater from the sea has been present during dry periods for decades due to the small size and limited recharge of the aquifer, as well as the high population density and the presence of crops with high water needs. In this study area, there is an immediate need to find solutions to improve water quality and ensure a reliable supply for its population and agriculture.

The Gruta de las Maravillas is the emblem of Aracena. Located in the heart of the town, the richness and variety of formations seen along its 1,200-meter path make it one of the most visited tourist caves in Spain and one of the pioneers of this type of tourism in Europe. The first references to its discovery date back to 1850 during mining work, and it opened to the public in 1914. The vastness of its lakes, the abundance and variety of formations, and the length of its development make this underground complex a highly beautiful and striking site, making it particularly attractive from a tourism perspective.

The aquifer beneath the city of Granada is a key water source for a metropolitan area with more than half a million inhabitants. It is replenished by several rivers that recharge the aquifer, originating in the Sierra Nevada mountain range at over 3,000 meters in altitude, from irrigation surplus from agricultural activities, and from contact with other nearby carbonate aquifers. It has several notable hydrogeological features, such as springs in the rivers, geothermal waters along its edges, and a deep basic layer that can reach up to 1,000 meters in thickness.

Honduras has a very humid climate and receives abundant rainfall; however, most of its population faces difficulties accessing an adequate water supply. This contradiction highlights the need to develop a greater understanding of hydrological and hydrogeological conditions in the country. Water management is often handled by local communities through Water Boards, which frequently lack the necessary resources to conduct research that would allow them to identify higher-quality water sources with a continuous supply.