Morphometric Parameters Formula References Basic Parameters Area of Basin (A) Perimeter of Basin (P) Plan area of the watershed (km2) GIS Software analysis [36] Perimeter of watershed (km) [36] Stream Order (u) Hierarchical rank [36] Basin Length (Lb) Length of basin (km)/GIS software analysis [34] [35] [41] Lb = 1.321 × A0.568a [17] Stream Length (Lu) Length of the stream (km) [36] Linear Parameters Bifurcation Ratio (Rb) Rb = Nu/Nu + 1, where [37] Nu + 1 = no. of segments of the next higher order Drainage Density (Dd) (km/km2) Dd = Lu/A, Where [36] Lu + total stream length of all orders (km) A = area of the watershed (km2) Stream Frequency(Fu) (no./km2) Fu = Nu/A, where [36] Nu = total no. of steams of all orders A = area of the basin(km2) Texture Ratio (T) (no./km2) T = Nu/P, where [36] Nu = total no. of streams of all orders P = perimeter (km) Length of Overland Flow (km) Lo Lo = ½ Dd, where [36] Dd = drainage density Shape parameters Form Factor (Rf) Rf = A/Lb2, where [36] A = area of the basin (km2) Lb = basin length (km) Shape Factor (Bs) Bs = Lb2/A, where [17] Lb = basin length (km) A = area of the basin (km2) Elongation Ratio (Re) Re = 1.128, where, [37] A = area of the basin (km2) Lb = basin length (km) Compactness Coefficient (Cc) , where [36] P = perimeter of the basin (km) A = area of the basin (km2) Circularity Ratio (Rc) Rc = 4 × ᴨ × A/P2, where ᴨ = 3.14 [38] A = area of the basin (km2) P = perimeter (km)