Bieržgaļa lake (also Kapiņi lake, Bērzgale lake, Bieržagoļka, Biržgaļa lake, Biržkalns lake) is a water body in Aglona parish of Preiļi region.
Area of water surface – 272,2 hectare
Max. length – 3,0 km
Max. width – 2,0 km
Average depth – 2,7 metre(s)
Max. depth – 3,9 metre(s)
Metres above mean sea level (MAMSL) – 149,8 metre(s)
Catchment area – 11,8 km2