Lotus Lake, a vital ecological landmark in Sector 27, Nerul, is again under threat due to illegal water chestnut cultivation, despite a Bombay High Court order directing NMMC to protect the lake.

Fresh plantation of water chestnuts, which had previously wiped out lotus vines in the lake two years ago, have been spotted again, DK Jain, core member of the Save Lotus Lake group, said. Save Lotus Lake (SLL) was formed to safeguard the water body from ecological damage.

The lake is not only under threat due to illegal chestnut cultivation, but there is rampant issue of illegal debris dumping and encroachment, Jain added. "The illegal farming and new encroachments, including cowsheds near the lake's eastern bank, are destroying the ecosystem," he said.

Following a formal complaint by Advocate Pradeep Patole, a team of 15 NMMC officials visited the lake on March 5, to assess the situation. Taking swift action, Dr Amol Palve, assistant commissioner of Belapur ward, has ordered a day-and-night watch around the lake.

"This time, we will not allow the planting of chestnut seeds. Immediate action is needed to stop the destruction of this lake," Jain said, even as he stressed the need to stop the ecological damage to the waterbody. Strict implementation of the Bombay High Court order is required, he added.

Expert warns about harmful effects of chestnut farming

Plant taxonomy expert Dr Sweedle Shivkar, from the Indian Women Scientists Association, explained that water chestnut (Trapa natans) is an invasive species and the primary reason for the depletion of lotus plants.

"Water chestnut forms thick mats on the lake surface, blocking sunlight and affecting aquatic life. It thrives in nutrient-rich water and is a serious threat to the local ecosystem." While native to India, the species is listed in the Global Invasive Species Database due to its harmful impact on aquatic environments.

Why Protecting Lotus Lake is Crucial? Apart from its rich biodiversity and serene environment, the lake plays a critical role in preventing floods in the area. During monsoons, heavy rainwater from Parsik Hill flows into the lake, preventing flooding in the entire node. The lake is also home to several birds and other fauna.