Kleven () is a long right tributary of the

Seym The Sejm (), officially known as the Sejm of the Republic of Poland (), is the lower house of the bicameral parliament of Poland. The Sejm has been the highest governing body of the Third Polish Republic since the transition of government ...

in Russia and Ukraine. It drains a catchment area of 2660 km² and has a gradient of 0.36 m/km.

Course

Kleven rises in the south-west of the

Central Russian Upland The Central Russian Upland (also: Middle Russian Upland () and East European Upland) is an upland area of the East European Plain and is an undulating plateau with an average elevation of . Its highest peak is measured at . The southeastern porti ...

in the south of the Russian

Bryansk Oblast Bryansk Oblast (), also known as Bryanshchina (, ), is a federal subject of Russia (an oblast). Its administrative center is the city of Bryansk. As of the 2021 Census, its population was 1,169,161. Geography Bryansk Oblast lies in weste ...

near the M3/ E101 trunk road and initially flows south. After a few kilometers, it comes across the Ukrainian village of Sopych. From there it forms the border between the Ukrainian

Sumy Oblast Sumy Oblast (), also known as Sumshchyna (), is an oblast (province) in northeast Ukraine. The oblast was created in its modern-day form, from the merging of raions from Kharkiv Oblast, Chernihiv Oblast, and Poltava Oblast in 1939 by the Presid ...

and the Russian

Kursk Oblast Kursk Oblast (, ) is a federal subjects of Russia, federal subject of Russia (an oblast). Its administrative center is the types of inhabited localities in Russia, city of Kursk. As of the 2021 Russian census, 2021 census, Kursk Oblast had a pop ...

over a longer stretch, changing its direction of flow mainly to the southwest, until it finally flows into the Seym at the southern edge of the village of Kamin in Sumy Oblast.

References

{{reflist, 30em Rivers of Bryansk Oblast Rivers of Kursk Oblast Rivers of Sumy Oblast