Tera River

The Tera is a river in the north of Spain, a tributary of the River Esla.

Tera
Location
Country	Spain
Region	Castile and Leon
Physical characteristics
Mouth
• location	River Esla, Bretocino
• coordinates	41°53′57″N 5°44′22″W
Length	139.82 km (86.88 mi)
Basin size	2,412 km2 (931 sq mi)

It is of ecological importance, being the home of 24 species of the European Union Nature Directives. Riberas del Río Tera y afluentes was designated a Special Area of Conservation in 2015.