Cholavaram Lake

Cholavaram Lake, also known as Cholavaram Eri, is a large artificial reservoir located in Cholavaram village in Thiruvallur District, about 24 km north of Chennai, Tamil Nadu. Constructed in 1877, it is one of the three major reservoirs supplying drinking water to Chennai, along with Puzhal and Poondi. The lake features a wide water spread, earthen bund and surrounding agricultural land, and is noted for seasonal water storage and birdlife.

Visitors can expect a vast open reservoir with a long earthen bund, expansive water spread especially after the northeast monsoon, and surrounding rural landscape of fields and scrub. The bund road offers views for sightseeing and photography. Winter months bring waterbirds and waders suitable for birdwatching. There are no developed tourist amenities or boating facilities; the site is primarily a water-supply reservoir with a quiet, natural setting for short walks and nature observation.

Constructed in 1877 during the British colonial period to augment water supply to Madras (now Chennai). It was developed as part of the city's reservoir system and continues to function as a key drinking water source alongside Puzhal (Red Hills) and Poondi reservoirs.

Significant for Chennai's urban water security and for local irrigation and fishing livelihoods in Thiruvallur district. The reservoir is an important community water resource for the surrounding villages.