Nalón

Nalón is a river in Asturias, Spain. It is one of the most important rivers in the region, flowing through the central and western part of the Principality of Asturias. The river originates in the Cantabrian Mountains, specifically in the Redes Natural Park, and flows for approximately 143 kilometers before emptying into the Bay of Biscay. Its course is characterized by a winding path through varied landscapes, including mountainous terrain and agricultural valleys.

The Nalón river basin covers a significant area of Asturias, supporting a diverse ecosystem. Historically, the river has played a crucial role in the region's development, particularly in mining and industry. Coal mining was prevalent in the areas surrounding the Nalón, and the river was used for transportation and power. Today, while industrial activity has decreased, the river basin remains an important area for agriculture and forestry.

The river's flow can fluctuate significantly depending on seasonal rainfall, and it is known to cause occasional flooding. Efforts have been made to manage the river and its tributaries, including the construction of dams for water regulation and hydroelectric power generation. The Nalón also contributes to the rich biodiversity of Asturias, supporting various fish species and providing a habitat for wildlife along its banks. The estuary where the Nalón meets the sea is an area of ecological significance.