It originates from lake Bolsena and gives the name to the homonym small village. It has mainly chub, carp, barbel and black bass. The first part of the river, at the lake outlet, is used as a flyfishing gym all year round thanks to its concrete banks and shallow water. Here fish are extremely difficult because anglers are obliged to fish a meter or so above water level and chub see them from a long distance…
Downstream, it becomes rather difficult due to trees and bushes. The bottom is muddy and wading is not easy.
Best flies are attractors and results are often very good. No special tackle is required. Excellent river for beginners.