The province of Pescara has a surface area of 1,225 sq. km and stretches, in the shape of a wedge, from the Adriatic coast to the peaks of central Apennines massifs, making a summary in its morphology of the dominant themes of Abruzzo. From a geomorphological and geolithological point of view, there are two areas: the outer coastal-hill area is characterized by clay hills sloping towards the sea; the inland mountain area consists of the Apennine massifs of carbonate nature.
The Apennine mountain system includes the north-eastern side of the Morrone, the north-western sector of the Majella, marked by deep valleys and spectacular canyons, and the extreme south-eastern foothills of the Gran Sasso d’Italia. The most important headwater area is Capo Pescara, near the town of Popoli, at an altitude of about 250 m above sea-level.