-The river of Piloña (called river Piloña), crosses by Piloña, Sevares,Villamayor.
-Born in the mountains of the council Peñamayor Bimenes.
-Flows into the River Sella in Arriondas.
-Piloña tributaries are:río Mon, río de la Cueva,Espinadero, Valle, río Borines,rio Tendi,río Color