Sesia
The river in the upper Valsesia
Location of the Sesia in Italy
Location
Country	Italy
Physical characteristics
Source
• location	Alagna Valsesia
• elevation	4,500 m (14,800 ft)
Mouth	Po
• coordinates	45°07′59″N 8°34′24″E / 45.13306°N 8.57333°E / 45.13306; 8.57333
Length	139.6 km (86.7 mi)[1]
Basin size	3,037.6 km2 (1,172.8 sq mi)[1]
Discharge
• average	(mouth) 70.4 m3/s (2,490 cu ft/s)[2]
Basin features
Progression	Po→ Adriatic Sea
Tributaries
• left	Sermenza, Mastallone, Pascone, Strona di Valduggia.
• right	Otro, Vogna, Artogna, Sorba, rio di Valmala, Sessera, Cervo, Naviglio di Ivrea (artificial canal), Bona, Marcova

The Sesia (Latin Sesites or Sessites) is a river in Piedmont, north-western Italy, tributary to the Po.

Geography

Its sources are the glaciers of Monte Rosa at the border with Switzerland. It flows through the Alpine valley Valsesia and the towns Varallo Sesia, Quarona, Borgosesia and Vercelli. The Sesia flows into the Po River near Casale Monferrato.

Main tributaries

• Left hand tributaries:
  • Sermenza,
  • Mastallone,
  • Pascone,
  • Strona di Valduggia.
• Right hand tributaries:
  • Sorba,
  • Sessera,
  • Cervo,
  • Naviglio di Ivrea,
  • Bona,
  • Marcova,
  • Roggia Stura.

Sport and leisure

It is a popular river for kayaking and hosted the European championship in 2001 and the world championship in 2002.^[3]