How the dam can hurt

As per Institute of Water Modelling

  • Water in Surma-Kushiara-Meghna can reduce by 10% in June, 23% in July, 16% in August and 15% in September.

  • Kushiara-Bardal wetland will dry up in monsoons.

  • The reservoir will trap nutrient-rich silt, affecting the productivity of crops downstream.

  • Excess erosion in the first 100-150 km will increase deposition in downstream Surma-Kushiara, raising the riverbed.

  • Deposition will block mouths of some tributaries.

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