Constructed in 1537 by King Kempe Gowda, Hebbal Lake has seen a multitude of uses since then: as a reservoir for drinking water, a source of livelihood for local fisher-folk, a haven for many species of birds, even a welcome sight for the sore eyes of the NCBS shuttle commuter, with its expanse of water, pelicans and painted storks.

Sadly, however, other uses have also been found. Drains from neighboring localities flow into the lake. Sewage almost always acts as a fertiliser for a water body due to an influx of nutrients; and Hebbal Lake has been no exception. One of the many consequences: a lush green mat of water hyacinth cloaking the surface of the lake.