Abstract In this paper, hydrogeological studies on aquifers which recharge some Umbria-Marche ridge springs, emerging in the southern Adriatic side of Sibillini Mountains are analysed. The main springs are Capodacqua, Pescara and Foce; other shallow, local springs, emerging at 600-1500 meters above sea level, represent the infiltration altitude of rain waters. All the springs were monitored for a period of about three years, with a regular collection of data (temperature, electrical conductivity, etc.) and sampling for chemical and isotopic analysis. Capodacqua, Pescara and Foce feed the aqueduct network of the Ascoli Piceno province.