Table 1.
List of parameters, formulas, and references used in the present study.
| Parameter | Formula | Reference |
|---|---|---|
| Basin area (km) | A | Schumm (1956) |
| Basin perimeter (km) | P | Schumm (1956) |
| Basin length (km) | Lb | Gregory and Walling (1973) |
| Total stream length (km) | Lu = L1 + L2 … Lu | Strahler (1957, 1964) |
| Total stream number | Nu = N1 + N2……Nu | Strahler (1957, 1964) |
| Drainage density | Dd = Lu/A | Horton (1932) |
| Frequency | Fs = ∑Nn/A | Horton (1932) |
| Elongation ratio | Eb = √2 Ab∕lb | Schumm (1956) |
| Circularity ratio | C = 4πA/P2 | Miller (1953) |
| Form factor | F = A/L2 | Horton (1932) |
| Compactness coefficient | c = P∕2√pA | Gravel us (1914) |
| Sinuosity ratio | SI = OL/EL | Schumn (1956) |
| Longest channel | Lc | Horton (1932) |
| Slope | S = Bh/Lb | Schumn (1956) |
| Time of concentration | Tc = 0.0078Lb0.77S−0.38 | Kirprich 1940 |
| Length of overland flow | Lo = 0.5 × 1/Dd | Schumm (1956) |
| Constant of channel maintenance | C = 1/Dd | Schumn (1956) |
| Shape index | Lb2/A | Horton (1945) |
| Infiltration number | Fs × Dd | Faniran 1986 |
| Basin width | Wb | Horton (1932) |
| Drainage texture | Td = ∑Nu/P | Horton (1945) |
| Basin relief | Bh = H − h | Schumn (1956) |
| Relief ratio | Rr = Hr/L | Schumn (1956) |
| Ruggedness number | Rn = H/Dd | Strahler (1957, 1964) |
| Bifurcation ratio | (Rb) Rb = Nn − 1/Nn | Schumm (1956) |