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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
Sejm in bupel.jpg
Seym in Kursk Oblast
CountryRussia, Ukraine
Physical characteristics
 ⁃ locationRussia
 ⁃ location
Length748 km (465 mi)
Basin size27,500 km2 (10,600 sq mi)
 ⁃ average99,6 m³/s[1]

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


  1. ^ a b "Сейм (река)" (in Russian). Большая Советская Энциклопедия. Retrieved 2019-05-05.
  2. ^ Izsák Tibor (2007). Ukrajna természeti földrajza (pdf) (in Hungarian). II. Rákóczi Ferenc Kárpátaljai Magyar Főiskola. p. 95. Retrieved 2019-05-05.
  3. ^ "NÉVJEGYZÉK-SZÓTÁR az UKRAJNA TERMÉSZETI FÖLDRAJZA tantárgyhoz" (pdf) (in Hungarian). II. Rákóczi Ferenc Kárpátaljai Magyar Főiskola. Retrieved 2019-05-05.
  4. ^ "Seim River". Encyclopedia of Ukraine. Retrieved 2019-05-05.

Coordinates: 51°27′34″N 32°33′50″E / 51.45944°N 32.56389°E / 51.45944; 32.56389