The water from Fuente Perica comes from carbonated alpujárrides materials. Schists, phyllites and quartzites define the eastern and northern impermeable substrate and edges, while contributing to the compartmentalization of the aquifer due to the existence of numerous tectonic scales. The southern and western limits are occupied by Miocene and Plioquaternary materials, which, except for those that make up the Almanzora River alluvial, are of low permeability. The thickness of the aquiferous limestones and dolomites is estimated at 300 m.
The supply of the aquifer comes from the direct infiltration of part of the rain that falls on the permeable outcrops and surface runoff water, coming from the surrounding schists and phyllites. The discharge occurs through boreholes and through springs and galleries located on the southern edge. This group of springs emerges together with a group of small Triassic carbonate outcrops that outcrop in the Almanzora valley, in the middle of the Miocene loamy package. The waters of these springs have the peculiarity of being slightly thermal (28 °C or more), the most important being Cela, Perica, Cañada and Plaza, Algibe and Huelago. This thermalism is also manifested in certain wells, some of which are springs. Like the Cela spring, the Fuencaliente, Perica and Algibe springs are possibly linked to the existence of an important fracture, or zone of fractures forming the Fuencaliente "horst", parallel to the edge of the Almanzora depression, thanks at which the emergence of the water that precisely would have circulated in depth will take place.