4 Number Bheri: A Unique Wetland That Protects Kolkata

By Moni Halder
From Santoshpur Rishi Aurobindo Balika Vidyapith

 

By 4 Number Bheri, located in Kantipota Gopalnagar, is an important part of the East Kolkata Wetlands. A bheri is a special type of water body used for fish farming and natural wastewater treatment. These wetlands are unique because they form the world’s largest wastewater aquaculture system. Instead of using expensive machines or chemicals, the bheris use sunlight, natural bacteria, and plankton to clean city sewage water. The organic waste in the water helps grow plankton, which becomes natural food for fishes. This eco-friendly process helps in recycling waste and protecting the environment.

Apart from fish farming, bheris also play an important role in preventing urban flooding by storing excess rainwater. They support biodiversity by providing shelter to birds, fishes, insects, and other aquatic animals. Many local families depend on these wetlands for their livelihood and affordable food supply. Therefore, bheris are not only environmentally important but also socially and economically valuable.

However, these wetlands are facing threats due to pollution, plastic waste, and unplanned urban development. If not protected, the natural balance of the East Kolkata Wetlands may be seriously affected. People should avoid throwing garbage and plastics into the water. Regular cleaning drives and awareness campaigns can help protect these water bodies. Local authorities should also take strong steps to conserve wetlands and maintain water quality.

As students and responsible citizens, we can spread awareness, participate in cleanliness drives, and encourage others to protect wetlands. Even small individual efforts can make a big difference in saving water bodies like 4 Number Bheri for future generations.