Removal of Silt in D-1 from Ch:0.00 to 0.40km, in D-2 from ch:0.00 to 0.20km, in D-3 from ch:0.00 to 0.30km, in D-4 from ch:0.00 to 0.50km, in D-5 from ch:0.00 to 0.50km, in D-6 from ch:0.00 to 0.50km, in D-7 from ch:0.00 to 0.50km and in D-8 from