oblast Valle della Sorna: povodí řeky Sorna od pramene po hráz tvořenou hydroelektrárnou v lokalitě Chizzola (Ala) před vtokem do řeky Adiže,
Zona Valle della Sorna: water catchment area of the river Sorna from the source to the barrier constituted by the hydro-electric power station located in the Chizzola (Ala) locality, before reaching the Adige river,