The Corno is a small
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 ...
of the northern
Lazio
Lazio ( , ; ) or Latium ( , ; from Latium, the original Latin name, ) is one of the 20 Regions of Italy, administrative regions of Italy. Situated in the Central Italy, central peninsular section of the country, it has 5,714,882 inhabitants an ...
and eastern
Umbria
Umbria ( ; ) is a Regions of Italy, region of central Italy. It includes Lake Trasimeno and Cascata delle Marmore, Marmore Falls, and is crossed by the Tiber. It is the only landlocked region on the Italian Peninsula, Apennine Peninsula. The re ...
in
Italy
Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...
. Its source is on the upper slopes of
Mount Corno, at an approximate altitude of 1700 m (5575 ft), and it flows for about , almost always due north, past the towns of
Leonessa,
Ocre,
Ruscio,
Monteleone di Spoleto,
Roccaporena,
Cascia
Cascia () is a town and ''comune'' (municipality) of the Italian province of Perugia in a rather remote area of the mountainous southeastern corner of Umbria. It is about 21 km from Norcia on the road to Rieti in the Lazio (63 km). It is ...
to
Serravalle where it receives the waters of the
Sordo; from there the last 11 km in a northwesterly direction to
Triponzo, where it flows into the
Nera at 420 m (1378 ft) altitude. Of the towns mentioned, only Serravalle and Triponzo are actually on the river, since in its upper course the Corno's torrential nature is not such as to make it safe for the siting of towns.
Rivers of the Province of Rieti
Rivers of the Province of Perugia
Rivers of Italy
{{Italy-river-stub