The Sarca is a river springing from the Adamello-Presanella mountains in the Italian Alps and flowing into Lake Garda at Torbole. As an emissary of the lake it becomes known as the Mincio river, forming a single river system long (Sarca-Mincio).

With its length, it is the fifth largest river in Trentino after the Adige, Brenta , Noce and Avisio , while it is the second largest in terms of flow after the Adige.

The river is shallow and fast flowing, passing through the Genova valley (Val di Genova), forming a number of waterfalls, of which Cascina Muta and Saft dei Can are the best known. Before reaching the Rendena Valley (Val Rendena), part of its water is diverted to a hydroelectric powerstation. Then its flow becomes less and less tumultuous. The main places on the river include Carisolo, Pinzolo, Tione di Trento, Le Sarche, Ponte Arche, Ragoli, Dro, Arco, and Torbole.

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