Eresma

General data
- Water type: River
- Progression: Adaja River -> Douro -> Atlantic Ocean -> Planet Earth
- Climates: Subtropical
- Continents: Europe
- Countries: Spain
Description
The Eresma is a river in central Spain. It flows through Castile and León (specifically the provinces of Segovia and Valladolid). It has a total length of 134 km and drains a basin with an area of 2,940 km2.