Survival Challenges for Kanwar Lake: Bihar’s only Ramsar site

Context

Bihar’s only Ramsar site, Kanwar Lake (aka Kabartal), which is in an appalling condition, has not found its mention in any election agenda.

About Kanwar Lake

The Kanwar Lake is Asia’s largest oxbow lake situated in the Begusarai district of Bihar. It is a residual oxbow lake, formed due to the meandering of Gandak River, a tributary of Ganga.

• Ramsar Convention Site: It was recognized under the Ramsar Convention as the first and only wetland of international importance in Bihar in 2020.

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• Historical Size and Coverage: Historically, the lake spanned 6,000-7,000 hectares, serving as a crucial habitat for wildlife.
• Seasonal Water Levels: The lake is predominantly rainfed, experiencing fluctuations in water levels with seasonal changes, peaking during the monsoon and shrinking in the summer.

Significance of Kanwar Lake

• Biodiversity Hub: The lake has been a significant habitat for diverse bird species, both migratory and local, making it a vital ecological site.
• Livelihood Source: It has traditionally provided a means of livelihood for thousands of local fisherfolk through fishing activities.
• Ecological Importance: As a Ramsar site, the lake holds global ecological importance, highlighting the need for its conservation and sustainable management.
  • The Wetland is an important stopover along the Central Asian Flyway, with 58 migratory waterbirds using it to rest and refuel.
• Cultural and Community Value: The lake plays an integral role in the local community’s cultural practices and economic activities.

Reasons for Deterioration of Kanwar Lake

• Encroachment and Agricultural Use: Increasing encroachment for agricultural purposes has significantly reduced the lake’s size and disrupted its ecological balance.
• Reduction in Water Availability: The lake has been drying up, particularly in the summer, due to a lack of sustainable water sources and overdependence on monsoon rains. Disrupted water channels from nearby rivers have exacerbated this issue.
• Neglect and Lack of Conservation Efforts: Despite its recognition and the establishment of protected status, little has been done to actively preserve or enhance the lake’s condition in recent years. Efforts to maintain its status as a Ramsar site have been minimal.
• Hunting and Poaching: Rampant hunting and poaching of birds have led to a decline in bird populations, further stressing the ecosystem.

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