The Matta () is a river in the Sakha Republic, Russia. It is a left tributary of the Sinyaya. It is long, and has a drainage basin of . Course The river begins in the southern area of the Lena Plateau. It flows roughly northeastwards across Gorny District and there are about 300 lakes in its basin. The town of Berdigestyakh, Gorny District, is located by the river. The Matta meets the left bank of the Sinyaya, a tributary of the Lena, upstream from its mouth. There is also a reservoir on the river that is named after it. The main tributary of the Matta is the long Dugda on the left. See also List of rivers of Russia References External links Geography - Yakutia Organized Rivers of the Sakha Republic