The Bolshaya Ussurka (Russian: Большая Уссурка, literally: "Great Ussuri") is a river in the Russian Far East in Primorsky Krai.

The area of the Bolshaya Ussurka drainage basin is approximately 29,600 square kilometres (11,400 sq mi).

[1] The river was known as "Iman" (Иман) until the 1972 Renaming of geographical sites in the Russian Far East.

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

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