The length of the river is 253 km. The area of its drainage basin is 8,700 km2.[1] The Snov freezes up in November - late January and stays icebound until March - early April. Part of the river forms the Russia–Ukraine border.[2]
According to Ruthenian chronicles, in 1068 at Snov River took place a battle between Duke of Chernihiv Sviatoslav Yaroslavich and Cumans led by their Duke Sharukan.[2]