Mouth of the Amur River, Russia
The Amur River carries brown sediments across northeastern Russia into in the Strait of Tartary, between the Russian mainland and Sakhalin Island.
The Amur is the world’s ninth longest river, forming the border between the Russian Far East and Northeastern China, where it is known as the Heilong Jiang.
Flowing across northeast Asia for over 4,444 km (2,761 mi), from the mountains of northeastern China to the Sea of Okhotsk (near Nikolayevsk-na-Amure), it drains a remarkable watershed that includes diverse landscapes of desert, steppe, tundra, and taiga, eventually emptying into the sea through the Strait of Tartary, where the mouth of the river faces the northern end of the island of Sakhalin.
The average annual discharge varies from 6000 m³/s (1980) – 12000 m³/s (1957), leading to an average 9819 m³/s or 310 km³ per year.