Black Lake Falls () is a waterfall located in the Tatra National Park, High Tatras, Poland, dropping a total of approximately . The waterfall has been formed on the Black Lake Stream (Polish: Czarnostawiaà Âski Potok) in the Rybi Potok Valley and flows out of Lake Czarny Staw pod Rysami located over Lake Morskie Oko. The waterfall falls down in two main cascades, the upper one lies at above sea level while the lower one is at .