Orco
From Wikipedia, the free encyclopedia
The Orco is an Italian river. It originates in the glaciers of the Piedmontese slopes of Gran Paradiso, and after about 90 km (56 mi) reaches the Po River near Chivasso. Its drainage basin is home to the most important complex of hydropower in Piedmont, consisting of five dams: Agnel, Serrù, Ceresole, Piantonetto, Valsoera, and numerous turbines.
The Orco River is known also for its golden sand, extracted already in antiquity. Even today there is a certain activity, on an amateur level, searching for grains of gold.