The Ulakhan-Vava (; ) is a river in Yakutia (Sakha Republic), Russia. It is a left hand tributary of the Vilyuy, and is long, with a drainage basin of .
The river flows across Mirninsky District; there are no permanent settlements in the area. The nearest inhabited place is Ekonda, located about to the NNW of the river source.Google Earth
Course The Ulakhan-Vava belongs to the upper section of the Vilyuy basin. Its sources are in an elevated part of the Vilyuy Plateau, near the Krasnoyarsk Krai border. It heads roughly southeastwards in its upper course and bends to the northeast in its middle reaches and heads roughly eastwards meandering in the floodplain. Finally, shortly before its mouth it bends sharply northeastwards and meets the right bank of the Vilyuy from its mouth in the Lena. The confluence is almost opposite the mouth of the Sen in the facing bank.Улахан-Вава — Great Soviet Encyclopedia in 30 vols. / Ch. ed. A.M. Prokhorov - 3rd ed. - M. Soviet Encyclopedia, 1969-1978
The main tributaries of the Ulakhan-Vava are the long Khaim (Хайм), the long Sengachanda, the long Mayykta-Seene (Майыкта-Сээнэ) and the long Kyuryungnekan (Кюрюнгнэкээн) from the right; and the long Umotka and the long Vava from the left. The river is fed by snow and rain. It freezes in October and stays under ice until early June.Nature.ykt
See also List of rivers of Russia
References
External links Кроншнеп-малютка Numenius minutus в центральной части Вилюйского плато