Irpin River

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For the city with the same name, see Irpin.
Other name Ірпінь
Origin Ukraine
Mouth Kiev Reservoir of the Dnieper
Basin countries Ukraine
Length 162 km (101 mi)
Source elevation  
Avg. discharge  
Basin area  

The Irpin’ or Irpen’ (Ukrainian: Ірпі́нь; Russian: Ирпе́нь) is a river in Ukraine, a right tributary of the Dnieper.

It is 162 km in length and flows through the city of Irpin'. The location where Irpin' enters the Dnieper river falls into the Kiev Reservoir which the Dnieper forms because of the Kiev Hydro-Electric Power Plant dam. Thus, the Dnieper water level at this location is lifted artificially by about 6.5–7 meters above the natural level. Therefore, the water of Irpin' is pumped into the Kiev Reservoir by powerful electrical pumps, making Irpin' the river that literally flows upwards.

The lands around Irpen' were the heartland of Kievan Rus and the chronicles mention the river in connection with several important historic events, such as the Battle on the Irpen' River of 1321 in which the Grand Duke of Lithuania Gediminas (Gedemin) gained control over the lands of what is now central Ukraine.

Coordinates: 50°27′41.18″N 30°31′47.6″E / 50.4614389°N 30.529889°E / 50.4614389; 30.529889