The Zeya is a northern, left tributary of the Amur in Amur Oblast, Russia. It is 1,242 km long, and has a drainage basin of 233,000 km2. The average flow of the river is 1,810 m3/s.
Zeya Nature Reserve is a Russian 'zapovednik' located over the mountainous headwaters of the Zeya River, on the eastern end of the Tukuringra Range, where it joins the Dzhagdy, in the Amur Region of t