The Nervión River is a river located in northern Spain, primarily flowing through the Basque Country. It originates in the Sierra de Ordunte and travels approximately 75 kilometers before emptying into the Bay of Biscay. The river is an important waterway for the region, supporting local ecosystems and providing water for agriculture. The Nervión is also significant for its historical and economic role, particularly in the city of Bilbao. The river has been central to the city's development, facilitating trade and transportation. Today, it is lined with parks and promenades, making it a popular spot for both locals and tourists.