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)