Table 1 Methodology adopted and result of morphometric characteristics of Arnigad and Bansigad catchment

1

Elevation (Z), m

Arc GIS

1650–2230

1620–2170

2

Perimeter (Pe), km

Arc GIS

7.54

6.31

3

Slope (S), degree

21.86*

23.61*

4

Stream Order (U)

Arc GIS

Strahler 1957

5

Stream Number (Nu)

Arc GIS

7

7

6

Stream length (Lu), km

Arc GIS

6*

5*

Horton 1945

7

Mean stream length (Lsm), km

Lsm = Lu/Nu

1*

1

Strahler 1964

8

Basin Length (Lb), km

Arc GIS

2.50

1.55

9

Drainage density (Dd), km·km⁻²

Dd = Lu/A

2.10

2.53

Horton 1932

10

Texture ratio (T), km⁻¹

T = Nu/Pe

0.93

1.12

Horton 1945

11

Length of overland flow (Lg), m

Lg = ½*Dd

1.05

1.26

Horton 1945

12

Drainage Area (A), km²

Arc GIS

2.86

1.91

13

Circularity ratio (Rc)

Rc = 12.57*(A/Pe²)

0.63

0.60

Miller et al. 1953

14

Elongation ratio (Re)

Re = 2/Lb*(A/ 휋) ^0.5

0.76

1.00

Schumm 1956

15

Form Factor (Ff)

Ff = A/Lb²

0.46

0.79

Horton 1932

16

Constant of channel

maintenance (C), km²·km⁻¹

C = 1/Dd

0.48

0.40

Schumm 1956

17

Drainage Frequency (Fμ), km⁻²

Fs = Nu/A

2.45

3.67

Horton 1932

18

Basin relief (R), m

R = Z – z

580

550

19

Relief ratio (Rr)

Rr = R/Lb

232

355

Schumm 1956