Varduva is a river in northwestern Lithuania. Its length is . It is a left tributary of Venta; their confluence is on the LithuaniaâÂÂLatvia border. Its origins and upper reaches are located within the à ½emaitija National Park. Its largest tributary is Sruoja. Larger settlements situated near Varduva include à ½emaiÃÂià ³ Kalvarija, Seda, Renavas, Ukrinai. Varduva has five small hydroelectric power plants: Kulà ¡ÃÂnai, Ukrinai, Vadagiai, Juodeikiai, Renavas. The largest of these plants in Juodeikiai produced 2.99 GWh of electricity in 2010.