3.2.8. Springs

There are more than two hundred springs in the study area. The most relevant for their cultural significance are: Cueva del Agua (Orbaneja del Castillo), Pozo Azul (Covanera); nevertheless, there are others with hydrogeological relevance as Pisadera and Valdelateja due to both of them present, past or/and current symptoms of hydrothermal activity.

#### *3.3. Main Aquifers Identified and Hydrogeological Model of Functioning*

Two types of aquifers are distinguished in the study area: an permeable unconfined aquifer; and a deep confined or semi-confined aquifer [2] made up of permeable materials of Jurassic age.

### *3.4. Characteristics of Some Representative Springs*

The most relevant springs are shown in Figure 1d. They could be classified in two main groups according to their geological pattern and associated aquifer formation: (a) Upper Cretaceous springs; (b) Jurassic springs.

The waters in Las Loras show an undifferentiated hydrochemical facies of bicarbonated waters. Almost all samples present a low mineralization.
