Vilaune - left tributary of Tirza in Cēsis and Gulbene districts. Length 18 km. The pool area is 61 km2. Annual runoff 0.018 km3, drop 84 m (4.7 m / km). Vilaune begins in the eastern corner of the Piebalga hills, southwest of Boļi, in the middle and lower reaches of the Augšgauja depression. The largest tributaries - Labā Vilaune and Tocupīte. There is a mill lake in the settlement on the Pearl River. Vilauni is crossed by the Liezere - Druviena road.

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