The Orco (, that is lit. ''Water of gold''; ) is an Italian

river A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...

. It originates in the

Piedmont Piedmont ( ; ; ) is one of the 20 regions of Italy, located in the northwest Italy, Northwest of the country. It borders the Liguria region to the south, the Lombardy and Emilia-Romagna regions to the east, and the Aosta Valley region to the ...

ese slopes of

Gran Paradiso The Gran Paradiso () or Grand Paradis ( ) is a mountain in the Graian Alps in Italy, located between the Aosta Valley and Piedmont regions. It is located in Gran Paradiso National Park. Etymology The Italian toponym ''Gran Paradiso'' deriv ...

and after about reaches the

Po river The Po ( , ) is the longest river in Italy. It flows eastward across northern Italy, starting from the Cottian Alps. The river's length is , or if the Maira (river), Maira, a right bank tributary, is included. The headwaters of the Po are forme ...

near

Chivasso Chivasso (; ) is a communes of Italy, comune in the Metropolitan City of Turin, in the Italy, Italian region of Piedmont, located about northeast of Turin. Chivasso has a population of about 27,000. It is situated on the :wikt:left bank, left bank ...

, in the

Metropolitan City of Turin The Metropolitan City of Turin (; Piedmontese language, Piedmontese: ''sità metropolitan-a 'd Turin'') is a Metropolitan cities of Italy, metropolitan city in the Piedmont region of Italy. Its capital is the city of Turin. It replaced the prov ...

. Its

drainage basin A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...

is home to the most important complex of

hydropower Hydropower (from Ancient Greek -, "water"), also known as water power or water energy, is the use of falling or fast-running water to Electricity generation, produce electricity or to power machines. This is achieved by energy transformation, ...

in Piedmont, consisting of six major dams (Agnel, Serrù, Ceresole Reale, Teleccio, Piantonetto, Valsoera), many smaller reservoirs and numerous

turbines A turbine ( or ) (from the Greek , ''tyrbē'', or Latin ''turbo'', meaning vortex) is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced can be used for generating electrical ...

and power stations. The Orco is known also for its

gold Gold is a chemical element; it has chemical symbol Au (from Latin ) and atomic number 79. In its pure form, it is a brightness, bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal ...

-bearing sand, extracted already in antiquity. Even today there is a certain activity, on an amateur level, searching for grains of gold.''Oro nel fiume Orco a Feletto''
www.minieredoro.it
(accessdate: 7-6-2012)

Notes

Rivers of the Metropolitan City of Turin Rivers of Italy Rivers of the Alps Braided rivers in Italy {{Italy-river-stub

See also

Notes