The Seym (also transcribed as Seim and Sejm, in Russian: Сейм; Ukrainian: Сейм) is a west-flowing river in Russia and Ukraine. Its length is 748 kilometres (465 mi) (250 km within Ukraine) and its basin area about 27,500 square kilometres (10,600 sq mi). It is the largest tributary of the Desna.[2][3][1][4]

Seym, Сейм
Seym in Kursk Oblast
Location
Country	Russia, Ukraine
Physical characteristics
Source
• location	Russia-Belgorod Oblast, Kursk Oblast. Ukraine-Sumy Oblast, Chernihiv Oblast.
Mouth	Desna
• coordinates	51°27′34″N 32°33′50″E
Length	748 km (465 mi)
Basin size	27,500 km2 (10,600 sq mi)
Discharge
• average	99.6 m³/s[1]
Basin features
Progression	Desna→ Dnieper→ Dnieper–Bug estuary→ Black Sea
Tributaries
• left	Reut, Vyr
• right	Tuskar, Svapa, Kleven

Places on the river are: Kursk, Kurchatov, Rylsk, Ukrainian border, Putyvl, Baturin, junction with the Desna which continues west and south past Chernihiv to Kyiv.

References

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На других языках

[de] Seim (Fluss)

[es] Río Seim

[it] Sejm (fiume)

[ru] Сейм (река)