The river Aunuva flowing in Siauliai and Kelme districts, the river Venta left tributary. Length of the river 26 km, the catchment area 187 km ². Source 5 kilometers to south from Raudenai village. Flows into Venta 316 km from its mouth at the Berzėnai village. Riverbed is very windy, in summer grasses overgrown, 3-4 m wide,  avg. depth 1.2 m. The gradient in upper section of the river 170 cm / km, in the lower section 38 cm / km. In upper section of the river valley is narrow and deep, in middle reaches up to 600 m wide, marshy, in lower section about 200 m wide, marshy. Lower section of the river  channeled. Average discharge at the mouth 1.31 m³ / s.

All year.
Strainers.
WW 0

8.7 Dam. right Aunuvenai. The river flowing through meadows. Current is calm. Channeled. Riverbed width of 5 m. Overgrow in the summer.
8.1 Bridge.
6.8 left Gumilta.
6.5 Bridge. left Aukseliai.
4.9 Gaulenai - Ramuciai road bridge. right Barborava.
4.3 right Satrija. The Aunuva runoff doubles. Riverbed width up to 10 m.
2.1 Bridge.
0.6  Uzventis - Kursėnai road bridge. left Pasilėnai. right Usakiai.
0.0 The Aunuva flows into the river Venta.