 Morphometric Parameters  Formula/Definition  References 
I  Basic Parameters 


1  Basin area (A) (Km^{2})  Plan area of the watershed (Km^{2})  [51] 
2  Basin perimeter (P) (Km)  Perimeter of the watershed (Km)  [51] 
3  Basin length (L_{b}) Km  Length of the basin (Km)  [51] 
4  Stream order (N_{u})  Hierarchical Rank  [49] 
5  Stream length (L_{u}) Kms  L_{u} = L_{1} + L_{2}, ・・・, L_{n}  [39] 
6  Mean stream length (L_{sm}) (Km)  L_{sm} = L_{u}/N_{u} (Km)  [39] 
7  Maximum and minimum heights (H, h) m 
 [8] 
8  Slope(S_{b}) 
 [8] 
II  Derived Parameters 


9  Bifurcation ratio (R_{b})  R_{b} = N_{u}/N_{u} + 1, where N_{u} = total no. of stream segments of oder “u”, N_{u} + 1 = no. of segments of the next high order  [59] 
10  Mean bifurcation ratio (R_{bm})  R_{bm} = average of bifurcation ratio of Strahler all order.  [49] 
11  Stream Length ratio (R_{L})  R_{L} = L_{u}/L_{u} − 1, where L_{u} = the total stream length of order “u”, L_{u} − 1 = No. of segment of the next lower order.  [39] 
12  RHO coefficient (ρ)  ρ = R_{L}/R_{b}  [51] 
13  Stream frequency (F_{s})  F_{s} = N_{u}/A  [51] 
14  Drainage density (D_{d}) Km/Km^{2}  D_{d} = L_{u}/A  [51] 
15  Drainage texture (D_{t})  D_{t} = N_{u}/P, where N_{u} = Total no. of streams of all orders, P = perimeter (Km)  [51] 
16  Basin relief (B_{h}) m  B_{h} = H_{max} − H_{min}, where, H_{max} = maximum height (m), and H_{min} = minimum height (m)  [60] 
17  Relief ratio (R_{r})  R_{r} = H/L_{b}, where, H = Total relief, and L_{b} = basin length  [39] 
18  Ruggedness number (R_{n})  R_{n} = D_{d}*(B_{h}/1000)  [39] 
19  Hypsometric integral (HI)  HI = (H_{mean} − H)/(H − h), where H = max. elevation, and h = min. elevation  [48] 
III  Shape Parameters 


20  Elongation ratio (R_{e})  R_{e} =  [59] 
21  Circularity ratio (R_{c})  R_{c} = 4*π*A/p^{2}  [70] 
22  Form factor (ratio) (R_{f})  R_{f} = A/L_{b}^{2}  [51] 