Ebro River: Spain's Longest River Flowing to the Mediterranean

The Ebro River is the longest river entirely within Spain (910 km / 565 mi) and the second-longest on the Iberian Peninsula after the Tagus. It rises in Fontibre (Cantabria), flows southeast through Castilla y León, La Rioja, Navarra, Aragón, and Catalonia, and empties into the Mediterranean Sea near Amposta in the Ebro Delta. Its basin covers 85,561 km² (33,035 sq mi). The river is vital for irrigation, hydroelectric power, and the unique ecosystems of its delta.