Scope for Further Delineation and Codification:-

           Each watershed can be further divided into subwatersheds which, in turn, sub-divided to microwatershed using more detailed drainage network in 1:50000 scale.

At microwatershed level the unique national code 5D5A6b1 (extension of earlier watershed code i.e., 5D5A6) will represent

v b: Subwatershed  (Subwatershed  no. b)

v 1: Microwatershed (Microwatershed no. 1)