a river in Novosibirsk and Tomsk oblasts, RSFSR; a left tributary of the Ob’. The Shegarka measures 382 km in length and drains an area of 12,000 sq km. It rises on the southeastern part of the Vasiugan Plain and is fed mainly by snow. The mean flow rate 177 km from the mouth is 12.6 cu m per sec.
The Shegarka freezes in late October or November, and the ice breaks up in the second half of April or early May. In the upper course it freezes through for two or three months in some winters, and in the summer it dries up. The Shegarka is used to float timber. It is navigable for a distance of 214 km from the mouth.