Morphometric Parameters  Formula  References 
Basic Parameters 


Area of Basin (A) Perimeter of Basin (P)  Plan area of the watershed (km^{2}) GIS Perimeter of watershed (km) Software analysis  [54] [54] 
Stream order (u) Basin Length (L_{b}) Stream Length (L_{u})  Hierarchical rank Length of basin (km)/GIS software analysis L_{b} = 1.321 × A^{0.568a } Length of the Stream (km)  [54] [55] [56] [46] [54] 
Linear Parameters 


Bifurcation ratio (R_{b})  Rb = N_{u}/N_{u} + 1, where N_{u} + 1 = no. of segments of the next higher order  [54] 
Drainage density (D_{d}) (km/km^{2})  D_{d} = L_{u}/A, Where L_{u} + total stream length of all orders (km) A = area of the watershed (km^{2})  [54] 
Stream frequency (F_{u}) (no./km^{2})  F_{u} = N_{u}/A, where N_{u} = total no. of steams of all orders A = area of the basin (km^{2})  [54] 
Texture ratio (T) (no./km^{2})  T = N_{u}/P, where N_{u} = total no. of streams of all orders P = perimeter (km)  [54] 
Length of overland flow (km) L_{o}  L_{o} = 1/2 D_{d}, where D_{d} = drainage density  [54] 
Shape parameters 


Form factor (R_{f})  R_{f} =, where A = area of the basin (km^{2}) L_{b} = basin length (km)  [54] 
Shape factor (B_{s})  B_{s} =, where L_{b} = basin length (km) A = area of the basin (km^{2})  [46] 
Elongation ratio (R_{e})  Re = 1.128, where, A = area of the basin (km^{2}) L_{b} = basin length (km)  [58] 
Compactness coefficient (C_{c})  , where P = perimeter of the basin (km) A = area of the basin (km^{2})  [54] 
Circularity ratio (R_{c})  R_{c} = 4 × ᴨ × A/P^{2}, where ᴨ = 3.14 A = area of the basin(km^{2}) P = perimeter(km)  [57] 