Eresma River

River Eresma
The Eresma River as it passes through Los Redondillos (Los Huertos, Segovia)
Location
Country	Spain
Region	Castile and León
Physical characteristics
Mouth	Adaja River
• coordinates	41°26′38″N 4°45′15″W / 41.44378°N 4.75404°W / 41.44378; -4.75404
Length	134 km
Basin features
Progression	Adaja→ Douro→ Atlantic Ocean

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.