Wikipedia
Peršėkė
'''Peršėkė ''' is a river of Alytus district municipality, Alytus County, southern Lithuania. It flows for 66 kilometres and has a basin area of 542 km².
It begins near Gervėnai village and crosses the Lake Obelija at upper course. There is a water reservoir on Peršėkė near Krokialaukis. The most important settlements near Peršekė are Krokialaukis and Balbieriškis. Peršėkė joins the Neman River from its left side.