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So as to make a comparison between different rivers, the OSI is also set up. The OSI index can be defined as the ratio of the weighted usable area to the total study area. For the river stretch, the OSI value is ranged from 1 to 0. 𝑂𝑆𝐼= ∑𝑀𝑖=1𝐴𝑖𝐻𝑆𝐼...