In a concerted effort to rejuvenate Rabindra Sarobar, the Kolkata Metropolitan Development Authority (KMDA) is approaching the completion of its extensive quicklime spraying initiative across the 72-acre lake. This endeavour has already yielded positive results, with a notable decrease in fish mortality rates over the past few weeks, indicating improved water quality.
The KMDA’s quicklime application strategy is part of a broader scheme to purify the lake and enhance its aquatic ecosystem. Initially, the water body experienced an alarming rate of fish deaths, averaging 15 to 16 daily. However, since the commencement of the quicklime treatment last month, this number has halved, suggesting a significant improvement in the lake’s health. An official noted, “Some fish naturally die due to aging, but the reduction in mortality rates indicates the success of the quicklime spraying.”
Experts from the fisheries department are scheduled to conduct a comprehensive inspection of the lake following the completion of the quicklime application. This review will determine whether further measures, such as the use of potassium permanganate, are necessary to sustain the lake’s improved condition. A KMDA official stated, “It would take another few days to complete spraying quicklime covering the entire water body. Next, fisheries department experts will be conducting a review inspection after which it would be decided whether there would be a need to charge the water body with potassium permanganate as suggested earlier.”
Additionally, the KMDA is considering a proposal to the National Green Tribunal (NGT) to employ large machinery for dredging the central portion of the lake. This desilting operation is aimed at further enhancing the lake bed’s condition and overall water quality. The proposal underscores the commitment to a long-term, sustainable solution for Rabindra Sarobar.
The quicklime treatment was initiated following a joint inspection by KMDA officials, fisheries experts, and Pollution Control Board (PCB) scientists, who recommended this approach to address the deteriorating water quality. The ongoing improvements are a testament to the efficacy of their collaborative efforts and scientific recommendations.
The reduction in fish deaths is a promising sign for the lake’s ecosystem, and the authorities remain vigilant in their efforts to ensure the lake’s health continues to improve. The forthcoming inspection by fisheries experts will be crucial in determining the next steps and ensuring that Rabindra Sarobar remains a thriving habitat for its aquatic life.
In conclusion, the KMDA’s proactive measures to spray quicklime in Rabindra Sarobar are proving effective, with a significant decrease in fish mortality rates and an overall improvement in water quality. The impending expert review and potential dredging proposal to the NGT highlight a comprehensive approach to lake management, ensuring the preservation and enhancement of this vital water body.
