Relier Pairs WatershedsVersion en ligne Match the watersheds of Spain with their characteristics. par Jesús Mínguez Corrales 1 Cantabrian watershed 2 Mediterranean watershed 3 Atlantic watershed It has (except Ebro) short rivers, and their flow is irregular. They are sometimes dry in the summer. It has short, rapid rivers. Their flow is abundant and regular. It has rivers with abundant and fairly regular flow, but they carry less water in the summer.