Drainage Density (Dd) | Dd = Lu/A | Horton (1932, 1945) | Dd is measured as the length of stream channels per unit area of the drainage basin. |

Stream Frequency (Fs) | Fs = ΣNu/A | Horton (1932, 1945) | Fs is computed as the ratio between the total number of streams and area of the basin. |

where, u = Stream order [28] Nu = Total no. of streams of all orders, Lu = Total stream length of all orders (km) A = Area of basin (km |