Yasachnaya River

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Catchment area of ​​the Kolyma and course of Jassatschnaja

Template: Infobox River / Obsolete

The Jassatschnaja (Russian Ясачная, Yakut Дьаһаак ) is a left tributary of the Kolyma River in Siberia (Russia, Asia). Together with its source river rights Jassatschnaja ( Правая Ясачная, Prawaja Jassatschnaja ) it has a length of 490 km.

The Jassatschnaja rises in the eastern foothills of the Tscherskigebirges in the Magadan Oblast and flows after leaving the mountains through the Kolyma lowlands to the east of the Republic of Sakha ( Yakutia). In the lower reaches it forms branches of the river and finally flows at settlement Syrjanka ( Зырянка ) in the Kolyma.

The catchment area covers 35,900 km ². The mean monthly water levels at Nelemnoje (55 km, according to other sources 80 km above the mouth ) is 329 m³ / s ( minimum in March: 17,8 m³ / s, maximum in June: 1,222 m³ / s). The river is mainly fed by meltwater, and is frozen from October to late May / early June.

The Jassatschnaja is from the mouth to Nelemnoje (55 km or 80 km) navigable.

The main tributaries are Omuljowka ( Омулёвка ) Olguja ( Олгуя ) Rassocha ( Рассоха ) and Gonjucha ( Гонюха, all from the left).