The River Vanoi

Details of the Vanoi river

Surface area of river basin: 228 sq. km.

Height above sea level: max. 2847 m – min. 443 m

Total difference in level: 2404 m

Length: 25.05 km

Average gradient: 10%. From the steepest down 12% - 5.3% - 3%

Main geological features: quartz, granite, moraine deposits, eluvial and colluvial deposits, alluvial and various eroded deposits.

Vegitation: mostly woods with some pasture land.

Terrain: much landslide movement: superficial slide movement 15 Ha, deep slow slide movement 80 Ha.
Full flood width 250 m.

Average annual water flow: 4 cub.m./sec
Average flow measured in Caoria (based on 80 sq km of river basin): min. in February 0.658 cub. m/sec, max. in May 6.557 cub.m./sec, average annual 2.812 cub.m./sec
Average annual flow measured at San Silvestro (increase in flow due to the addition of the Travignolo, Boalon, ValZortei and Lozen rivers): min. in February 4.589 cub.m./sec, max. in June 14.093 cub.m./sec, average annual 8.113 cub.m/sec

NB: Vanoi is the second largest valley in the area, with the tributaries of Valfredda, Valsorda, Regana, Viosa, Rebrut and Vallunga, it flows through the communes of Canal San Bovo, Castello and Cinte Tesino. The villages of Caoria, Canal San Bovo and Ronco are sited along its course.