Bolshaya Ussurka

The Bolshaya Ussurka (Большая Уссурка, literally: "Great Ussuri") is a river in the Russian Far East in Primorsky Krai. It is a right tributary of the Ussuri, which it meets near Dalnerechensk.

The area of the Bolshaya Ussurka drainage basin is approximately 29600 km2. It is 440 km long. The river was known as "Iman" (Иман) until the 1972 Renaming of geographical sites in the Russian Far East.

The major tributaries of the Bolshaya Ussurka are the rivers Malinovka, Marevka, Naumovka and Armu.