Juodupė is a river of

Biržai district municipality Biržai (, also known by several #Name, alternative names) is a city in northern Lithuania. Famous for its reconstructed Biržai Castle Manor house, manor, the whole region is renowned for its many traditional-recipe beer breweries. Name The e ...

Panevėžys County Panevėžys County () is one of ten counties of Lithuania, counties in Lithuania. It is in the north-east of the country, and its Capital (political), capital is Panevėžys. On 1 July 2010, the county administration was abolished, and since tha ...

, northern

Lithuania Lithuania, officially the Republic of Lithuania, is a country in the Baltic region of Europe. It is one of three Baltic states and lies on the eastern shore of the Baltic Sea, bordered by Latvia to the north, Belarus to the east and south, P ...

. It flows for and has a basin area of .Juodupė – Visuotinė lietuvių enciklopedija
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References

Rivers of Lithuania Biržai District Municipality {{Lithuania-river-stub