[12] The migratory birds mostly come to the eastern part of the lake, as the water is deeper and the area is free from human disturbances.

[12] Long before the trans yamuna (now known as East Delhi) area, thus called because it lay across the Yamuna River from the main city of New Delhi, was colonised by the government, this was natural low-lying area, land depression where rainwater collected,[14] which was also fed by excess run-off from a cut in the Hindon River.

Similarly, when National Highway 24 (NH 24) was built to connect the national capital to Capital of Uttar Pradesh state, Lucknow, which cut through the lake, and the Nizamuddin bridge was built over the Yamuna and its northern portion was lost and lake was reduced to present 69 hectares (170 acres).

In the following decades, as land pressure increased in East Delhi, the lake further shrunk due to unauthorised construction, encroachment and sewage from near by slums.

Sanjay Lake has a total forested area of 170 acres,[16] and it is one of the longest park of East Delhi locations.

The Adventure Park is claimed to have been developed on a Wild West theme making extensive use of natural materials such as wood and jute rope and consisting of hut like structures.

[18] Spread across 6.3 acres, it has nine lawns-Great Plain, Battle Ground, Home Dome, The Den, Grazing Field, Bad Lands, Cattle Ranch, Cowboy Creek and a man-made beach.