|Length||213 km (132 mi)|
|Basin size||4,340 km2 (1,680 sq mi)|
|Progression||Desna→ Dnieper→ Dnieper–Bug estuary→ Black Sea|
The river has its sources on the Smolensk Ridge, and flows in a southerly direction to its confluence with the Desna in the city of Bryansk. The river also flows through the towns of Dyatkovo, Fokino, Kirov and Lyudinovo.
In the 19th century, the river was navigable between Dyatkovo and Bryansk.