Morphometric parameters

Methods

References

Linear aspects

number of Stream (Nu)

Hierarchical ordering

[28]

Stream order (u)

Hierarchical Rank

[28]

Stream length (Lu)

Length of the stream

[29]

Mean stream length (Lm)

Lm = Lu/Nu

[29]

Stream length ratio (Rl)

Rl = Lu/L(u-1), where Lu is stream length order u and L(u_1) is stream segment length of the next lower order

[29]

Bifurcation ratio (Rb)

Rb = Nu/N(u-1), where Nu is number of streams of any given order and N(u-1) is number in the next higher order

[29]

perimeter (P)

Perimeter of the watershed in (km) measured by GIS

[30]

Basin length (lb)

Length of watershed (Km) measured by GIS

[29]

Areal aspects

Drainage density (Dd)

Dd = L/A, where L is total stream length, A is area of the watershed

[29]

Stream frequency (Fs)

Fs = N/A, where N is the total number of streams and A is area of the watershed

[29]

Drainage texture (Dt)

T = Dd 9 Fs

[31]

Lemniscate Ratio (K)

k = L2/4A

[31]

Form factor (Rf)

Ff = A/Lb2

[29]

Circularity ratio (Rc)

Rc = 4pA/P2

[30]

Elongation ratio (Re)

Re = 2H(A/p)/Lb, where A is area of the watershed, p is 3.14 and Lb is basin length

[31]

Relief aspects

Basin relief (R)

R = H − h, where H is maximum elevation and h is Minimum elevation within the basin

[31]

Relief ratio (Rr)

Rr = R/Lb

[32]

Ruggedness number (Rn)

Rn = R 9 Dd

[33]

Dissection index (Dis)

Dis = R/Ra, where R = Relative relief and Ra is absolute relief

[34]

Drainage intensity (Di)

Di = Fs/Dd

[35]