The Seim (also transcribed as Seym and Sejm, in ; ) is a west-flowing river in

Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eig ...

and

Ukraine Ukraine ( uk, Україна, Ukraïna, ) is a country in Eastern Europe. It is the second-largest European country after Russia, which it borders to the east and northeast. Ukraine covers approximately . Prior to the ongoing Russian inv ...

. Its length is (250 km within Ukraine) and its basin area about . It is the largest

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drai ...

of the Desna. Places on the river are:

Kursk Kursk ( rus, Курск, p=ˈkursk) is a city and the administrative center of Kursk Oblast, Russia, located at the confluence of the Kur, Tuskar, and Seym rivers. The area around Kursk was the site of a turning point in the Soviet–German stru ...

, Kurchatov, Rylsk, Ukrainian border, Putyvl,

Baturyn Baturyn ( uk, Бату́рин, ), is a historic city in Chernihiv Oblast (province) of northern Ukraine. It is located in Nizhyn Raion (district) on the banks of the Seym River. Baturyn lost its city status in 1923 and received it back only in ...

, junction with the Desna which continues west and south past Chernihiv to Kyiv.

References

{{Ukraine-river-stub Rivers of Belgorod Oblast Rivers of Kursk Oblast Rivers of Sumy Oblast Russia–Ukraine border