Hnyly Tikych in the context of Bila Tserkva Raion

The Syniukha (Ukrainian: Синюха) is a river in Ukraine, a left tributary of the Southern Bug, the basin of Black Sea. Its name means blue or of blue shade. It is 111 kilometres (69 mi) long with a 16,700 square kilometres (6,448 sq mi) basin area. It is formed at the confluence of its source rivers the Tikych (itself formed at the confluence of the Hnyly Tikych and the Hirskyi Tikych) and the Velyka Vys. It flows into the Southern Bug at Pervomaisk.

It is believed that in the mid-14th century one of the major battles between the Grand Duchy of Lithuania and the Ulus Jochi, the Battle of Blue Waters, took place here.

The Tikych (Ukrainian: Тікич) is a short river in Cherkasy Oblast, Ukraine, only 4 kilometres (2.5 mi) long. It is formed by the confluence of the Hnyly Tikych and Hirsky Tikych rivers. The Tikych flows to its confluence with the Velyka Vys at Skaleva (Holovanivsk Raion), forming the Syniukha. The Syniukha then flows 110 kilometres (68 mi) to the Southern Bug.