Table 1 Methodology used for calculation of the morphometric parameters

1

Linear

Sum of all stream numbers (S Nu)

Counted using Arc GIS software where (Nu is the number of order u)

2

Sum of all stream lengths (S Lu)

Km

Measured from DEM using Arc GIS software

4

Bifurcation ratio (Rb)

Rb = Nu/Nu + 1

Horton (1945)

5

weighted mean bifurcation ratio (WMRb)

WMRb = ∑[(Rbu:u₊₁)*(Nu + Nu₊₁)]/∑N

Strahler (1953)

6

Valley length (VL)

Km

Measured from DEM using Arc GIS software

7

Basin length (LB)

Km

Measured from DEM using Arc GIS software

3

Sinuosity index (Si)

Km

Si = sinuosity (VL / LB) (km).

Gregory and Walling (1973)

8

Areal

Drainage frequency (F)

km^-2

F = ∑N_u/A

Horton (1945)

9

Area of alluvium deposits in basin (Av)

km²

Measured from DEM using Arc GIS software with geologic maps

10

Drainage density (D)

km^-1

D = ∑L_u/A

Horton (1945)

11

Perimeter (P)

Km

Measured from DEM using Arc GIS software

12

Area of the basin (A)

Km²

Measured from DEM using Arc GIS software

13

Elongation ratio (Re)

Re = 2(A/Π)^0.5/LB

Schumm (1956)

14

Circularity ratio (Rc)

Rc = 4ΠA/P²

Miller (1953)

15

Length of overland flow (Lo)

Km

Lo = 1/2D

Horton (1945)

16

Texture Ratio (Rt)

Km^-1

Rt = ∑Nu/p.

Horton (1945)

17

shape index (Ish)

Ish = 1.27. A/LB²

Hagget (1956)

18

Relief

Relief (R)

m

Measured from DEM using Arc GIS software

19

Slope index (SI)

SI = E85 − E10/ 0.75 VL

20

Relief ratio (Rr)

Rr = R/LB

Schumm (1956)

21

Ruggedness number (Rn)

Rn = DR

Melton (1957)