We analyzed the main factors influencing springs in the upper part of the Dilar valley (more than 2.200 m above sea level), at the heart of the metamorphic domain of Sierra Nevada (internal zone of Betic Range). We studied the most significant springs and developed a system of classification based on the main factors influencing water flow (morphologic, depositional and tectonic). Our results show the presence of ground water flow with a very high hydraulic conductivity through different clastic deposits and, to a lesser degree, through fractures or the superficial alterated layer. Strong relation were detected between water flow and morphological matter, i.e. (primarily) glacial and periglacial forms, crioclastic action forms and snowmelt processes