
Varthur Lake
Lake
Varthur Lake
Varthur Lake in Bengaluru (Bangalore) Urban, Karnataka, is a large man-made lake covering about 445 acres, built over 1,000 years ago during the Ganga dynasty to store rainwater for agriculture and domestic use.
Historically, it was an important water source supporting local farming and provided habitat for diverse flora and fauna. Over the years, rapid urban growth has severely polluted the lake, with untreated sewage inflows from Bangalore, especially from Bellandur Lake upstream, leading to eutrophication and significant ecosystem degradation. The water quality decline has impacted local agriculture and biodiversity, with fewer fish species now surviving.
Efforts have been made recently to clean and desilt the lake and start afforestation and biodiversity projects, but pollution and sewage inflow remain major challenges as of 2025. Restoring Varthur Lake fully requires ongoing government action and community involvement to address these environmental issues and protect the lake’s ecological and social value.
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Varthur Lake is located in Bengaluru (Bangalore) Urban, Karnataka.
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