Dep

The Dep rises in Lake Ogoron and flows southwest to join the Zeya from the left. Its upper course has the character of a mountain river, but farther downstream it crosses low country where marshes spread across parts of the valley. The Dep is a substantial tributary, some 348 kilometres long, and its waters eventually reach the Amur through the Zeya. The Tynda is among the rivers that feed it from the surrounding country.