The river Aiseta - the name of the Kiauna river between the lake Aisetas and the lake Kiaunas.

Flowing in Utena district, Aukstaitija National Park. The river flows out of Lake Aisetas at the north eastern end of the lake. Flows to the southeast, in the middle reaches crosses the swampy meadow, where the bed is channeled. Flows into the western end of the lake Kiaunas. Length 4.2 km. Rated discharge at Paaisete (3.7 km from the mouth): maximum 12.9 m³ / s, average 2.10 m³ / s.