Sit River
Coordinates: 58°18′40.5″N 37°52′52.6″E / 58.311250°N 37.881278°E
The Sit' River (Сить) is a tributary of the Rybinsk Reservoir (nominally, of the Mologa River). The river flows for 159 kilometres (99 mi) through Sonkovsky District of Tver Oblast and Nekouzsky and Breytovsky Districts of Yaroslavl Oblasts of Russia before entering the Rybinsk Reservoir near the large village of Breitovo. Its average width varies from 40 to 50 metres (130 to 160 ft). The river mouth is about 1,500 metres (4,900 ft) wide. The drainage basin occupies some 1,900 square kilometres (730 sq mi). The river is 159 kilometres (99 mi) long.
The river gives its name to the bloody Battle of the Sit River (1238). In the Middle Ages the valley of the Sit River belonged to a branch of the princely House of Yaroslavl. The princes of the Sit', or Sitsky, joined the service of the Grand Dukes of Muscovy in the 15th century. The family survived into the 17th century and was closely related by blood to the Romanovs.
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