Alta River
Length 46 km (29 mi)

Alta River (Ukrainian: Альта, Ільтиця|, Alta, Iltytsya) is a small river in Ukraine and is a right tributary of the Trubizh River. The ancient town of Pereyaslav (currently Pereiaslav-Khmelnytskyi, Ukraine) is situated between the Trubizh and Alta rivers.

The river is considered the place where the assassins sent by Svyatopolk the Accursed killed saints Boris and Gleb in 1015. In 1019 it was the site of a battle between Svyatopolk and his brother Yaroslav I the Wise which Yaroslav won.[1]

In 1068 the river was the place where Iziaslav I of Kiev was defeated by from Polovtsy at the Battle of the Alta River[2]

On 25 May 1630 on the river near Pereyaslav was the place where Polish hetman Stanisław Koniecpolski was beaten by the Zaporozhian Cossacks led by Taras Triasylo. The battle is known as the Taras Night and is described in the Taras Shevchenko poem Taras Nich .[3]