Sit River

The Sit' River (Сить) is a tributary of the Mologa River. The river flows for 159 km through the Tver and Yaroslavl regions of Russia before entering the Rybinsk Reservoir near the large village of Breitovo. Its average width varies from 40 to 50 meters. The river mouth is about 1500 meters wide. The drainage basin occupies some 1900 km2.

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.

In the early 20th century the valley of the Sit River was home to the Sitskari (ru), an ethnic group of short fair-haired people speaking a Northern dialect of the Russian language. It is thought that they had an admixture of Lithuanian or some other Baltic ancestry.