Farakka Barrage & Bihar’s Water Concerns
-Core issue: Bihar argues that the Farakka water-sharing arrangement disproportionately affects downstream Bihar, making it both an inter-State federal issue and an India–Bangladesh water diplomacy issue.
-Treaty: India–Bangladesh Ganga Water Sharing Treaty, 1996 expires on 12 December 2026; demand is for reconsideration before renewal. The 1996 Ganga Water Sharing Treaty, signed for 30 years (1996–2026), reflected the Gujral Doctrine of accommodating smaller neighbours without demanding strict reciprocity; its renewal must also safeguard Bihar’s riparian interests.
-Unequal burden on Bihar: In lean season, about 1,500 cumec is required at Farakka, while only about 400 cumec reaches Bihar from upstream; Bihar contributes nearly 73% of the remaining requirement through the Ganga and its tributaries.
-Upstream–downstream inequity: Around 75% of the Ganga catchment lies upstream of Bihar, yet upstream States use water for irrigation/hydropower, while Bihar bears a disproportionate responsibility for maintaining downstream flow.
-Flooding & siltation: Reduced/altered flow and heavy silt deposition in the Ganga raise the riverbed, aggravating floods, bank erosion and waterlogging in Bihar; districts such as Darbhanga and Madhubani also face groundwater stress.
-Ecological impact: Disturbed flow affects the Ganga’s ecological continuity, including aquatic biodiversity such as the Gangetic dolphin, and increases risks from pollutants like arsenic and fluoride.
-Water-sharing concern: Bihar needs water for irrigation, drinking water and industry, but the existing arrangement leaves limited lean-season water; the article flags the need to reassess allocation in light of rising demand and climate variability.
-Demographic pressure: Bihar’s population has risen sharply since the 1996 agreement, substantially increasing domestic, agricultural and livelihood water requirements.
Way forward: Any renewal/revision of the Ganga Water Treaty (1996) should be based on scientific assessment of basin-wide water availability, ensure minimum ecological flow, address silt management, and formally accommodate the interests of riparian States such as Bihar.
Takeaway: Transboundary river agreements must balance international commitments with federal equity, ecological sustainability and the legitimate developmental needs of riparian States.
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