- Berezayka River
Infobox River | river_name = Berezayka River
caption =
origin =Berezay Lake
mouth =Msta River
basin_countries =Russia
length = 150 km
elevation = 205 m
discharge = 27 m³/s
watershed = 3,230 km²Berezayka ( _ru. Березайка) is a
river inNovgorod Oblast andTver Oblast ofRussia . Berezayka starts from theBerezay Lake in theValdai Hills at coord|57|45|20|N|33|19|00|E, flows through a number of lakes including the southeastern part of thePiros Lake , and joins theMsta River atBerezovsky Ryadok village at coord|58|05|50|N|34|29|10|E.It is a popular rafting route. The main tributary of Berezayka is
Valdayka River .
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